Q.1 What does DICOM stand for in medical imaging?
Digital Imaging and Communications in Medicine
Dynamic Imaging of Contrast in Magnetic Resonance
Digital Imaging of Clinical Magnetic Data
Direct Imaging and Communication in Medical Devices
Explanation - DICOM is the standard that defines formats for medical images and the communication protocols for transmitting them.
Correct answer is: Digital Imaging and Communications in Medicine
Q.2 Which layer of the OSI model is primarily responsible for ensuring reliable end-to-end delivery of data in a PACS network?
Transport Layer
Physical Layer
Presentation Layer
Session Layer
Explanation - The transport layer (TCP) guarantees reliable delivery of packets between two endpoints, which is crucial for large image files.
Correct answer is: Transport Layer
Q.3 What is the main benefit of using JPEG2000 over standard JPEG in PACS?
Faster compression
Lossless and lossy options with higher compression
Smaller file size only in lossy mode
Better color reproduction for skin tones
Explanation - JPEG2000 supports both lossless and lossy compression and can achieve higher compression ratios while preserving image fidelity.
Correct answer is: Lossless and lossy options with higher compression
Q.4 Which DICOM attribute contains the patient's unique identifier?
(0010,0010)
(0010,0020)
(0010,0030)
(0010,0040)
Explanation - (0010,0020) is the Patient ID attribute in the DICOM standard.
Correct answer is: (0010,0020)
Q.5 In a PACS architecture, what component typically stores the actual image data?
Workstation
Archive Server
Presentation Router
Client Interface
Explanation - Archive servers are the primary storage for image files, often using a dedicated storage subsystem.
Correct answer is: Archive Server
Q.6 What protocol is commonly used for sending DICOM images over the internet?
FTP
DICOMweb (WADO-URI)
SMTP
SNMP
Explanation - DICOMweb, particularly WADO-URI, allows images to be fetched over HTTP/HTTPS using standardized URLs.
Correct answer is: DICOMweb (WADO-URI)
Q.7 Which of the following is NOT a valid DICOM modality?
CT
XRAY
US
MRI
Explanation - The correct modality code for X-ray is 'CR' or 'DX', not simply 'XRAY'.
Correct answer is: XRAY
Q.8 What does PACS stand for?
Picture Archiving and Communication System
Patient Administration and Communication Service
Personal Audio Compression Software
Photographic Acquisition and Calibration System
Explanation - PACS refers to the system that stores, retrieves, and distributes medical images.
Correct answer is: Picture Archiving and Communication System
Q.9 Which encryption standard is commonly used to secure DICOM image transmission?
AES-128
RC4
3DES
Blowfish
Explanation - AES-128 is widely adopted for encrypting DICOM data during network transfer.
Correct answer is: AES-128
Q.10 What is the purpose of the DICOM 'Transfer Syntax' attribute?
Specifies the image's resolution
Defines compression and encoding used
Stores patient name
Indicates the study date
Explanation - Transfer Syntax determines how pixel data is encoded, including compression type.
Correct answer is: Defines compression and encoding used
Q.11 Which database model is most commonly used to index metadata in a PACS?
NoSQL document store
Relational database
Graph database
Key-Value store
Explanation - PACS metadata is traditionally stored in a relational database for structured queries.
Correct answer is: Relational database
Q.12 Which DICOM query level allows retrieval of a single image?
Patient
Study
Series
Image
Explanation - The 'Image' query level targets a specific image instance.
Correct answer is: Image
Q.13 What does the DICOM attribute (0018,0020) represent?
Patient Position
Manufacturer
KVP
Slice Thickness
Explanation - (0018,0020) is the Slice Thickness attribute for CT/MRI images.
Correct answer is: Slice Thickness
Q.14 Which component in a PACS handles the routing of images between modalities and workstations?
DICOM Router
Image Engine
Modality Worklist Server
PACS Presentation Server
Explanation - The DICOM router forwards images and commands to the appropriate destination.
Correct answer is: DICOM Router
Q.15 Which of these is a commonly used storage format for PACS archives?
TIFF
DICOM
PNG
BMP
Explanation - Images are stored in DICOM format to preserve metadata and standardization.
Correct answer is: DICOM
Q.16 What does the DICOM SOP Class UID '1.2.840.10008.5.1.4.1.1.2' represent?
CT Image Storage
MR Image Storage
PET Image Storage
Ultrasound Image Storage
Explanation - That UID is reserved for CT image storage according to the DICOM standard.
Correct answer is: CT Image Storage
Q.17 Which standard ensures that medical images can be shared across different vendors' devices?
HL7
DICOM
FHIR
SNOMED CT
Explanation - DICOM is the universal format for imaging data, enabling interoperability.
Correct answer is: DICOM
Q.18 In a DICOM query, the 'Patient ID' field is used to search for which level of data?
Patient
Study
Series
Image
Explanation - Patient ID uniquely identifies a patient, affecting all studies and series.
Correct answer is: Patient
Q.19 What is the function of the DICOM Worklist?
Generate synthetic images
Schedule image acquisition
Provide patient scheduling information to modalities
Encrypt image files
Explanation - The worklist supplies modalities with scheduled patient and study details to streamline imaging.
Correct answer is: Provide patient scheduling information to modalities
Q.20 Which network protocol is NOT commonly used for DICOM file transfer?
TCP/IP
HTTP
SMTP
DICOM TCP
Explanation - SMTP is for email; DICOM uses TCP/IP or HTTP for file transfer.
Correct answer is: SMTP
Q.21 What does the DICOM attribute (0008,0020) store?
Study Date
Series Number
Patient Age
Manufacturer
Explanation - (0008,0020) records the date when the study was performed.
Correct answer is: Study Date
Q.22 Which term describes the process of removing redundant data from a PACS archive to save space?
Compression
Deduplication
Archiving
Indexing
Explanation - Deduplication identifies and eliminates duplicate data across the archive.
Correct answer is: Deduplication
Q.23 What is the primary advantage of a cloud-based PACS?
No need for local servers
Instant image generation
Higher resolution displays
Direct patient access
Explanation - Cloud PACS offloads storage and processing to remote servers, reducing on-site infrastructure.
Correct answer is: No need for local servers
Q.24 Which DICOM attribute specifies the imaging device manufacturer?
(0008,0070)
(0008,0080)
(0018,1000)
(0018,1002)
Explanation - Attribute (0008,0070) is the Manufacturer field.
Correct answer is: (0008,0070)
Q.25 What is the typical size range for a single 3D CT volume stored in DICOM?
1–5 MB
10–50 MB
100–500 MB
1–5 GB
Explanation - Most CT volumes are tens of megabytes after compression.
Correct answer is: 10–50 MB
Q.26 Which DICOM keyword is used to identify the institution that owns a study?
Institution Name
Study Description
Patient ID
Accession Number
Explanation - Institution Name provides the name of the owning facility.
Correct answer is: Institution Name
Q.27 Which DICOM Service Class enables a device to request image data from a server?
C-STORE
C-GET
C-FIND
C-ECHO
Explanation - C-GET requests the server to send images back to the requester.
Correct answer is: C-GET
Q.28 What is the purpose of a DICOM Modality Worklist Server?
Archive images
Store patient names
Provide imaging schedules to modalities
Encrypt images
Explanation - It supplies modalities with upcoming patient studies to reduce manual entry.
Correct answer is: Provide imaging schedules to modalities
Q.29 Which storage technology is commonly used for long-term PACS retention?
Flash memory
Magnetic tape
USB drives
SD cards
Explanation - Tape offers high capacity and low cost for archival storage.
Correct answer is: Magnetic tape
Q.30 Which DICOM tag indicates the patient's sex?
(0010,0040)
(0010,0030)
(0010,0010)
(0010,0020)
Explanation - (0010,0040) holds the value M, F, or O.
Correct answer is: (0010,0040)
Q.31 What is the main difference between DICOM and HL7 standards?
DICOM is for images, HL7 for patient records
DICOM is older than HL7
HL7 supports encryption only
HL7 is used only for billing
Explanation - DICOM focuses on imaging data; HL7 handles clinical messaging.
Correct answer is: DICOM is for images, HL7 for patient records
Q.32 Which attribute is used to specify the image acquisition date and time in DICOM?
(0008,0020)
(0008,0032)
(0010,0030)
(0020,000D)
Explanation - Attribute (0008,0032) stores the time component of the acquisition.
Correct answer is: (0008,0032)
Q.33 What does 'DICOMweb' primarily provide?
Standalone image viewer
Web-based DICOM services over HTTP/HTTPS
Encryption key management
Hardware diagnostics for PACS
Explanation - DICOMweb offers RESTful APIs for querying and retrieving images.
Correct answer is: Web-based DICOM services over HTTP/HTTPS
Q.34 Which DICOM service class is used for health monitoring of a PACS server?
C-ECHO
C-FIND
C-MOVE
C-GET
Explanation - C-ECHO is a simple ping that checks if the server responds.
Correct answer is: C-ECHO
Q.35 What does 'PACS' stand for?
Picture Archiving and Communication System
Patient Acquisition and Calibration Software
Personal Audio Compression Standard
Photographic Acquisition and Calibration System
Explanation - It is the system that manages medical images in a clinical setting.
Correct answer is: Picture Archiving and Communication System
Q.36 Which attribute in DICOM indicates the type of image acquisition?
(0008,0060)
(0018,0015)
(0018,0020)
(0018,1030)
Explanation - (0008,0060) is the Modality field (e.g., CT, MR).
Correct answer is: (0008,0060)
Q.37 What is the main purpose of DICOM compression?
Reduce transmission time
Improve image quality
Add metadata
Secure the image
Explanation - Compression lowers file size, speeding up transfer over networks.
Correct answer is: Reduce transmission time
Q.38 Which of the following is NOT a typical DICOM storage service?
C-STORE
C-FIND
C-MOVE
C-ECHO
Explanation - C-ECHO is for connectivity testing, not storing images.
Correct answer is: C-ECHO
Q.39 Which DICOM attribute contains the patient’s birth date?
(0010,0030)
(0010,0040)
(0010,0010)
(0010,0020)
Explanation - (0010,0030) stores the birth date in YYYYMMDD format.
Correct answer is: (0010,0030)
Q.40 What is the function of the 'C-MOVE' service class in DICOM?
Store images
Query metadata
Retrieve and send images to another device
Check server health
Explanation - C-MOVE requests the server to transfer images to a specified destination.
Correct answer is: Retrieve and send images to another device
Q.41 Which DICOM tag defines the image’s pixel data?
(7FE0,0010)
(0018,0050)
(0008,0060)
(0010,0010)
Explanation - (7FE0,0010) holds the raw pixel data array.
Correct answer is: (7FE0,0010)
Q.42 Which technology is most often used to provide secure access to PACS from outside the hospital network?
VPN
FTP
SMTP
SNMP
Explanation - VPN creates a secure tunnel for remote access to the PACS.
Correct answer is: VPN
Q.43 What does the DICOM UID '1.2.840.10008.5.1.4.1.1.1' represent?
MR Image Storage
CT Image Storage
US Image Storage
PET Image Storage
Explanation - This UID is assigned to MR images.
Correct answer is: MR Image Storage
Q.44 Which of the following describes 'Lossless Compression'?
Image quality cannot be restored
Image quality can be fully restored after decompression
It reduces file size by discarding data
It only works on grayscale images
Explanation - Lossless compression preserves all original data.
Correct answer is: Image quality can be fully restored after decompression
Q.45 What does the 'Accession Number' attribute identify?
The specific study order
The patient’s unique ID
The device manufacturer
The imaging modality
Explanation - Accession Number uniquely tags a study within a facility.
Correct answer is: The specific study order
Q.46 Which DICOM service class is used to query the existence of an image?
C-FIND
C-ECHO
C-GET
C-MOVE
Explanation - C-FIND searches for images that match specified criteria.
Correct answer is: C-FIND
Q.47 What is 'PACS' typically responsible for in a hospital?
Diagnosing patients
Storing and retrieving medical images
Managing pharmacy inventory
Scheduling surgeries
Explanation - PACS handles image management, not clinical decisions.
Correct answer is: Storing and retrieving medical images
Q.48 Which attribute in DICOM indicates the image’s acquisition protocol?
(0008,103E)
(0018,1000)
(0018,1030)
(0020,000D)
Explanation - (0008,103E) is the Series Description field.
Correct answer is: (0008,103E)
Q.49 Which of these is a key benefit of using a PACS over traditional film?
Images cannot be altered
Instant image access from any location
No need for image quality control
Reduced storage costs only
Explanation - PACS allows quick retrieval of images electronically.
Correct answer is: Instant image access from any location
Q.50 Which DICOM service is used for simple connectivity tests?
C-ECHO
C-FIND
C-GET
C-MOVE
Explanation - C-ECHO is like a ping to test communication.
Correct answer is: C-ECHO
Q.51 What does the DICOM 'Patient’s Age' attribute represent?
Number of months since birth
Exact age in years
Age at the time of study
Age recorded on the patient's file
Explanation - It reflects the patient’s age during the imaging session.
Correct answer is: Age at the time of study
Q.52 Which of the following is an example of a DICOM SOP Class?
CT Image Storage
Ultrasound Image Storage
MR Image Storage
All of the above
Explanation - All are SOP Classes defined by DICOM.
Correct answer is: All of the above
Q.53 What does 'HL7' stand for?
Health Level 7
Hospital Library 7
High Level 7
Human Life 7
Explanation - HL7 is a set of international standards for transfer of clinical data.
Correct answer is: Health Level 7
Q.54 Which DICOM tag identifies the manufacturer’s model name?
(0008,1090)
(0008,0070)
(0018,1000)
(0008,0016)
Explanation - (0008,1090) holds the Manufacturer's Model Name.
Correct answer is: (0008,1090)
Q.55 What does 'DICOMweb' replace in traditional DICOM workflows?
File transfer over DICOM TCP
Image compression
Patient ID assignment
Image display
Explanation - It uses HTTP/HTTPS instead of the older DICOM TCP protocol.
Correct answer is: File transfer over DICOM TCP
Q.56 Which attribute in DICOM indicates the image’s number within a series?
(0020,0011)
(0020,000D)
(0020,000E)
(0008,0020)
Explanation - (0020,0011) is the Instance Number field.
Correct answer is: (0020,0011)
Q.57 In a PACS, the 'Presentation Server' is mainly responsible for:
Storing images
Retrieving images from storage
Rendering images for display
Compressing images
Explanation - The Presentation Server prepares images for viewing on workstations.
Correct answer is: Rendering images for display
Q.58 Which of the following is a typical DICOM network port?
1111
104
80
443
Explanation - Port 104 is the default for DICOM communications.
Correct answer is: 104
Q.59 Which attribute in DICOM holds the study’s accession number?
(0008,0050)
(0008,0052)
(0008,0054)
(0008,0056)
Explanation - (0008,0050) stores the Accession Number.
Correct answer is: (0008,0050)
Q.60 What is the purpose of 'DICOM Modality Worklist' in PACS?
Generate images automatically
Provide scheduling information to imaging devices
Store image data locally
Encrypt patient records
Explanation - It eliminates manual entry of patient details by the radiology tech.
Correct answer is: Provide scheduling information to imaging devices
Q.61 Which of these is NOT a valid DICOM file extension?
.dcm
.dicom
.img
.jpg
Explanation - JPEG files use .jpg but are not DICOM unless wrapped.
Correct answer is: .jpg
Q.62 Which attribute defines the patient's ethnicity in DICOM?
(0008,0010)
(0010,1010)
(0010,1040)
(0010,1000)
Explanation - (0010,1040) stores ethnicity information.
Correct answer is: (0010,1040)
Q.63 Which service class is used to request an image from a PACS for display on a workstation?
C-STORE
C-GET
C-FIND
C-MOVE
Explanation - C-GET retrieves images from the server to the requesting workstation.
Correct answer is: C-GET
Q.64 What does the 'Transfer Syntax' attribute dictate?
Encryption method
Compression type and endianness
Patient's birth date format
Image orientation
Explanation - It defines how pixel data is encoded and transmitted.
Correct answer is: Compression type and endianness
Q.65 Which component of PACS typically provides secure remote access to images?
DICOM Router
VPN Gateway
Image Engine
Presentation Server
Explanation - VPNs secure the channel for remote image access.
Correct answer is: VPN Gateway
Q.66 What does 'Accession Number' primarily identify?
Patient’s name
Unique study order
Imaging device
Study location
Explanation - It uniquely tags each study request.
Correct answer is: Unique study order
Q.67 Which DICOM tag is used to store the manufacturer’s software version?
(0008,1010)
(0008,1011)
(0008,1012)
(0008,1013)
Explanation - (0008,1010) holds the Software Versions attribute.
Correct answer is: (0008,1010)
Q.68 What is the main purpose of 'DICOM Worklist'?
Store images on disk
Provide patient scheduling information to modalities
Generate synthetic images
Compress image files
Explanation - It automates the input of patient data for the imaging device.
Correct answer is: Provide patient scheduling information to modalities
Q.69 Which DICOM attribute represents the image’s resolution in pixels per mm?
(0028,0030)
(0028,0010)
(0028,0100)
(0018,0050)
Explanation - (0028,0030) holds the Pixel Spacing values.
Correct answer is: (0028,0030)
Q.70 What is 'DICOMweb' primarily built upon?
SOAP
RESTful APIs over HTTP/HTTPS
TCP
UDP
Explanation - It uses modern web protocols for image retrieval.
Correct answer is: RESTful APIs over HTTP/HTTPS
Q.71 Which attribute indicates the type of imaging modality in a DICOM file?
(0008,0060)
(0010,0010)
(0018,0015)
(0020,000D)
Explanation - (0008,0060) holds the Modality (e.g., MR, CT).
Correct answer is: (0008,0060)
Q.72 In DICOM, the 'Patient Orientation' attribute is identified by which tag?
(0020,0037)
(0008,0037)
(0018,0060)
(0010,0037)
Explanation - (0020,0037) contains orientation information.
Correct answer is: (0020,0037)
Q.73 What is the main function of the 'C-FIND' service in DICOM?
Request image files
Send image files to a client
Search for images based on criteria
Echo server status
Explanation - C-FIND queries the server’s database for matching records.
Correct answer is: Search for images based on criteria
Q.74 Which DICOM tag indicates the institution that performed the study?
(0008,0080)
(0008,0081)
(0008,0082)
(0008,0083)
Explanation - (0008,0080) stores the Institution Name.
Correct answer is: (0008,0080)
Q.75 What is the typical function of a 'PACS Archive Server'?
Render images for display
Provide worklist information
Store large volumes of imaging data
Perform DICOM compression
Explanation - Archive servers hold long‑term image data.
Correct answer is: Store large volumes of imaging data
Q.76 Which DICOM SOP Class is used for ultrasound images?
US Image Storage
CT Image Storage
MR Image Storage
PET Image Storage
Explanation - It is the designated SOP Class for ultrasound imaging.
Correct answer is: US Image Storage
Q.77 Which attribute in DICOM indicates the series number within a study?
(0020,0002)
(0020,0010)
(0020,000E)
(0020,0003)
Explanation - (0020,0010) is the Series Number field.
Correct answer is: (0020,0010)
Q.78 What does 'DICOM C-STORE' service do?
Send images from a client to a server
Query metadata
Retrieve images
Check server connectivity
Explanation - C-STORE uploads images to the PACS.
Correct answer is: Send images from a client to a server
Q.79 Which DICOM tag holds the patient’s name?
(0010,0010)
(0010,0020)
(0010,0030)
(0010,0040)
Explanation - (0010,0010) is the Patient Name attribute.
Correct answer is: (0010,0010)
Q.80 What is a key advantage of using cloud PACS over on‑premises?
Higher image resolution
No need for local maintenance
Faster compression
Better patient privacy
Explanation - The cloud provider handles infrastructure maintenance.
Correct answer is: No need for local maintenance
Q.81 Which DICOM tag stores the 'Institution Address'?
(0008,0090)
(0008,0091)
(0008,0092)
(0008,0093)
Explanation - (0008,0090) holds the Institution Address.
Correct answer is: (0008,0090)
Q.82 Which of the following is NOT typically a DICOM transfer syntax?
Explicit VR Little Endian
Implicit VR Little Endian
JPEG Lossless (8-bit)
PNG Compression
Explanation - PNG is not a defined DICOM transfer syntax.
Correct answer is: PNG Compression
Q.83 What does 'DICOM C-MOVE' do?
Retrieve images from a server to a client
Move images between PACS servers
Search for images
Echo server status
Explanation - C-MOVE instructs the server to send images to another destination.
Correct answer is: Move images between PACS servers
Q.84 Which attribute in DICOM contains the device's serial number?
(0008,1150)
(0008,1155)
(0008,1157)
(0008,1158)
Explanation - (0008,1150) holds the Device Serial Number.
Correct answer is: (0008,1150)
Q.85 What is the primary purpose of DICOM 'Pixel Data' attribute?
Store the image’s resolution
Store the actual image pixels
Store the image description
Store patient demographics
Explanation - This attribute contains the raw pixel values.
Correct answer is: Store the actual image pixels
Q.86 Which DICOM tag stores the manufacturer of the imaging device?
(0008,0070)
(0008,0090)
(0008,0016)
(0008,0080)
Explanation - (0008,0070) is the Manufacturer field.
Correct answer is: (0008,0070)
Q.87 What is the typical bandwidth requirement for transmitting a 2‑megapixel CT image over a PACS network?
1–2 Mbps
5–10 Mbps
50–100 Mbps
200–500 Mbps
Explanation - With compression, a typical CT image can be transmitted in a few seconds.
Correct answer is: 5–10 Mbps
Q.88 Which DICOM attribute indicates the image’s acquisition date?
(0008,0020)
(0008,0032)
(0010,0030)
(0018,0020)
Explanation - (0008,0020) stores the Study Date.
Correct answer is: (0008,0020)
Q.89 What does 'C-ECHO' in DICOM check for?
Server uptime
Network latency
Server responsiveness
Image quality
Explanation - C-ECHO is a lightweight test of server connectivity.
Correct answer is: Server responsiveness
Q.90 Which attribute holds the ‘Manufacturer’s Model Name’?
(0008,1090)
(0008,1070)
(0008,1080)
(0008,1060)
Explanation - (0008,1090) is the Manufacturer's Model Name.
Correct answer is: (0008,1090)
Q.91 What does DICOM 'Presentation State' control?
Image compression
Image display parameters like window/level
Patient demographics
Network routing
Explanation - Presentation state stores display settings for consistent viewing.
Correct answer is: Image display parameters like window/level
Q.92 Which DICOM tag indicates the ‘Patient’s Weight’?
(0010,1010)
(0010,1030)
(0010,1032)
(0010,1040)
Explanation - (0010,1030) holds the patient’s weight.
Correct answer is: (0010,1030)
Q.93 Which attribute is used to identify the series description in a DICOM file?
(0008,103E)
(0020,000D)
(0020,000E)
(0018,1030)
Explanation - (0008,103E) stores the Series Description.
Correct answer is: (0008,103E)
Q.94 Which of the following protocols is used for DICOMweb image retrieval?
FTP
HTTP/HTTPS
SMTP
SNMP
Explanation - DICOMweb uses standard web protocols.
Correct answer is: HTTP/HTTPS
Q.95 What is the main advantage of DICOM’s Explicit VR?
Faster compression
Simplifies parsing of data
Reduces network traffic
Allows encryption
Explanation - Explicit VR tags specify value representation, aiding decoding.
Correct answer is: Simplifies parsing of data
Q.96 Which DICOM attribute stores the manufacturer’s software version?
(0008,1010)
(0008,1011)
(0008,1012)
(0008,1013)
Explanation - (0008,1010) is the Software Versions attribute.
Correct answer is: (0008,1010)
Q.97 Which network protocol is commonly used to secure PACS traffic over the internet?
TLS/SSL over HTTPS
FTP
SMTP
SNMPv1
Explanation - TLS/SSL secures data in transit for PACS.
Correct answer is: TLS/SSL over HTTPS
Q.98 What does the DICOM tag (0008,0016) represent?
SOP Class UID
Series Number
Patient ID
Study Date
Explanation - (0008,0016) holds the SOP Class UID for the image.
Correct answer is: SOP Class UID
Q.99 Which attribute is used to indicate the patient's sex in DICOM?
(0010,0040)
(0010,0030)
(0010,0010)
(0010,0020)
Explanation - (0010,0040) contains the sex value.
Correct answer is: (0010,0040)
Q.100 What is the primary role of a 'PACS Workstation'?
Store images
View and analyze images
Compress images
Archive patient records
Explanation - Workstations provide interfaces for clinicians to view images.
Correct answer is: View and analyze images
Q.101 Which DICOM tag identifies the ‘Accession Number’?
(0008,0050)
(0008,0051)
(0008,0052)
(0008,0053)
Explanation - (0008,0050) stores the Accession Number.
Correct answer is: (0008,0050)
Q.102 Which attribute in DICOM holds the image’s modality description?
(0008,0060)
(0018,1000)
(0018,1030)
(0018,0050)
Explanation - (0008,0060) contains the Modality (e.g., MR, CT).
Correct answer is: (0008,0060)
Q.103 What does the DICOM attribute (0020,000E) contain?
Study Instance UID
Series Instance UID
Image Instance UID
SOP Instance UID
Explanation - (0020,000E) uniquely identifies a series.
Correct answer is: Series Instance UID
Q.104 Which of the following is a standard DICOM compression technique?
JPEG2000
PNG
TIFF
BMP
Explanation - JPEG2000 is defined for lossless and lossy compression in DICOM.
Correct answer is: JPEG2000
Q.105 What does the 'Patient Name' attribute contain?
Last name only
First name only
Full name (last, first)
Patient ID
Explanation - Patient Name is stored as 'Last,First' in DICOM.
Correct answer is: Full name (last, first)
Q.106 Which DICOM attribute specifies the acquisition time of the image?
(0008,0032)
(0008,0020)
(0008,0018)
(0008,0033)
Explanation - (0008,0032) holds the time component of the acquisition.
Correct answer is: (0008,0032)
Q.107 What is the purpose of the 'C-GET' service in DICOM?
Send image to a client
Request images from a server for local display
Query metadata
Check server connectivity
Explanation - C-GET retrieves images to the requesting workstation.
Correct answer is: Request images from a server for local display
Q.108 Which DICOM tag represents the 'Manufacturer's Model Name'?
(0008,1090)
(0008,1070)
(0008,1080)
(0008,1060)
Explanation - (0008,1090) is the Manufacturer's Model Name field.
Correct answer is: (0008,1090)
Q.109 Which protocol is used for the traditional DICOM TCP/IP communication?
C-STORE
C-MOVE
C-GET
C-ECHO
Explanation - C-STORE is the main operation for sending images over TCP/IP.
Correct answer is: C-STORE
Q.110 What does the DICOM 'Patient Age' field represent?
Age in days
Age in years
Age in months
Age at the time of the study
Explanation - It indicates the patient’s age during imaging.
Correct answer is: Age at the time of the study
Q.111 Which DICOM attribute stores the 'Institution Address'?
(0008,0090)
(0008,0091)
(0008,0092)
(0008,0093)
Explanation - (0008,0090) holds the Institution Address.
Correct answer is: (0008,0090)
Q.112 What is the function of the 'C-MOVE' DICOM service?
Retrieve images from the server to a workstation
Move images between two servers
Search for images
Check server health
Explanation - C-MOVE tells a server to forward images to another destination.
Correct answer is: Move images between two servers
Q.113 Which attribute holds the 'Series Instance UID' in DICOM?
(0020,000E)
(0020,000D)
(0020,0010)
(0020,0011)
Explanation - (0020,000E) uniquely identifies a series.
Correct answer is: (0020,000E)
Q.114 Which of the following is a typical DICOM network port number?
80
443
104
22
Explanation - Port 104 is the standard for DICOM communications.
Correct answer is: 104
Q.115 What does 'PACS' primarily store?
Patient text notes
Imaging data and associated metadata
Laboratory test results
Billing information
Explanation - PACS focuses on image storage and retrieval.
Correct answer is: Imaging data and associated metadata
Q.116 Which attribute in DICOM indicates the patient’s weight?
(0010,1030)
(0010,1032)
(0010,1040)
(0010,1010)
Explanation - (0010,1030) holds the weight in kilograms.
Correct answer is: (0010,1030)
Q.117 What is the main use of the DICOM 'C-FIND' service?
Send images to a client
Query image metadata
Retrieve images
Echo server status
Explanation - C-FIND searches for image records that match given criteria.
Correct answer is: Query image metadata
Q.118 Which attribute contains the 'Image Instance UID' in DICOM?
(0008,0016)
(0008,0018)
(0010,0010)
(0020,000E)
Explanation - (0008,0018) uniquely identifies an image instance.
Correct answer is: (0008,0018)
Q.119 What does 'C-STORE' do in a PACS?
Retrieve images from the server
Store images on the server
Query the server
Check connectivity
Explanation - C-STORE uploads images to the PACS storage.
Correct answer is: Store images on the server
Q.120 Which attribute stores the 'Patient's Birth Date' in DICOM?
(0010,0030)
(0010,0040)
(0010,0010)
(0010,0020)
Explanation - (0010,0030) holds the date of birth.
Correct answer is: (0010,0030)
Q.121 Which of the following is NOT a DICOM SOP Class?
CT Image Storage
US Image Storage
PDF Image Storage
MR Image Storage
Explanation - PDF is not a DICOM SOP Class; images are stored as DICOM.
Correct answer is: PDF Image Storage
Q.122 Which DICOM tag stores the 'Institution Name'?
(0008,0080)
(0008,0090)
(0008,0091)
(0008,0092)
Explanation - (0008,0080) holds the name of the institution.
Correct answer is: (0008,0080)
Q.123 What does the DICOM 'Series Number' attribute indicate?
The order of the patient in the study
The sequence number of a series within a study
The patient ID
The image number within a series
Explanation - It defines the series order in a study.
Correct answer is: The sequence number of a series within a study
Q.124 Which DICOM attribute holds the 'Accession Number' for a study?
(0008,0050)
(0008,0052)
(0008,0054)
(0008,0056)
Explanation - (0008,0050) stores the Accession Number.
Correct answer is: (0008,0050)
Q.125 In a PACS, what is the role of the 'Presentation Server'?
Store images
Render images for viewing
Compress images
Manage patient demographics
Explanation - It prepares images for display on workstations.
Correct answer is: Render images for viewing
Q.126 What is the main difference between DICOM and HL7?
DICOM is for images; HL7 is for messaging
HL7 is older
HL7 is for billing only
DICOM is only for audio data
Explanation - DICOM handles imaging; HL7 handles clinical communication.
Correct answer is: DICOM is for images; HL7 is for messaging
Q.127 Which DICOM tag specifies the 'Pixel Spacing'?
(0028,0030)
(0028,0100)
(0028,0010)
(0018,0050)
Explanation - (0028,0030) contains the spacing between pixels.
Correct answer is: (0028,0030)
Q.128 Which protocol is commonly used to secure PACS traffic over the internet?
TLS/SSL over HTTPS
FTP
SMTP
SNMP
Explanation - TLS/SSL secures the data during transmission.
Correct answer is: TLS/SSL over HTTPS
Q.129 Which DICOM tag stores the 'Manufacturer's Software Versions'?
(0008,1010)
(0008,1011)
(0008,1012)
(0008,1013)
Explanation - (0008,1010) holds the software version information.
Correct answer is: (0008,1010)
Q.130 What does the DICOM 'Patient Sex' attribute indicate?
Gender of the patient
Sex of the technician
Sex of the device manufacturer
Sex of the patient’s spouse
Explanation - It records whether the patient is male, female, or other.
Correct answer is: Gender of the patient
Q.131 Which DICOM tag indicates the 'Series Description'?
(0008,103E)
(0020,000D)
(0020,000E)
(0018,1030)
Explanation - (0008,103E) provides a textual description of the series.
Correct answer is: (0008,103E)
Q.132 What is the typical use of the 'C-GET' operation in DICOM?
Retrieve images for local display
Send images to a server
Query image metadata
Check server status
Explanation - C-GET instructs the server to transmit images to the requester.
Correct answer is: Retrieve images for local display
Q.133 Which DICOM attribute holds the 'Accession Number' of a study?
(0008,0050)
(0008,0052)
(0008,0054)
(0008,0056)
Explanation - (0008,0050) stores the Accession Number.
Correct answer is: (0008,0050)
Q.134 What is the function of 'DICOM Modality Worklist Server'?
Store images
Provide scheduling information to imaging devices
Compress images
Archive patient records
Explanation - It supplies modalities with patient and study details to reduce manual input.
Correct answer is: Provide scheduling information to imaging devices
Q.135 Which DICOM tag stores the 'Manufacturer' field?
(0008,0070)
(0008,0090)
(0008,0016)
(0008,0080)
Explanation - (0008,0070) contains the manufacturer name.
Correct answer is: (0008,0070)
Q.136 What does the 'C-MOVE' DICOM service do?
Send images to a client
Move images between PACS servers
Query image metadata
Check server connectivity
Explanation - C-MOVE instructs a server to transfer images to another destination.
Correct answer is: Move images between PACS servers
Q.137 Which attribute contains the 'Image Instance UID'?
(0008,0018)
(0008,0016)
(0020,000E)
(0018,0015)
Explanation - (0008,0018) uniquely identifies an image.
Correct answer is: (0008,0018)
Q.138 What is the primary purpose of DICOM 'Explicit VR'?
Speed up compression
Simplify data parsing
Reduce network traffic
Encrypt data
Explanation - Explicit VR tags define the data type, aiding decoding.
Correct answer is: Simplify data parsing
Q.139 Which DICOM tag holds the 'Patient's ID'?
(0010,0020)
(0010,0010)
(0010,0030)
(0010,0040)
Explanation - (0010,0020) is the Patient ID attribute.
Correct answer is: (0010,0020)
Q.140 Which of the following is a common DICOM compression method?
JPEG2000
BMP
TIFF
PNG
Explanation - JPEG2000 is defined for both lossless and lossy compression.
Correct answer is: JPEG2000
Q.141 What is the main advantage of using cloud PACS?
No local maintenance required
Higher image quality
Better patient privacy
Faster image compression
Explanation - Cloud solutions handle infrastructure and scaling for the user.
Correct answer is: No local maintenance required
Q.142 Which DICOM attribute holds the 'Device Serial Number'?
(0008,1150)
(0008,1155)
(0008,1157)
(0008,1158)
Explanation - (0008,1150) is the Device Serial Number.
Correct answer is: (0008,1150)
Q.143 What is the typical network port for DICOM web services?
80
443
104
106
Explanation - HTTPS (port 443) is used for secure DICOMweb operations.
Correct answer is: 443
Q.144 Which DICOM attribute defines the 'Pixel Data'?
(7FE0,0010)
(0028,0010)
(0028,0002)
(0018,0050)
Explanation - (7FE0,0010) stores the raw pixel array.
Correct answer is: (7FE0,0010)
Q.145 Which attribute holds the 'Patient's Ethnicity'?
(0010,1040)
(0010,1010)
(0010,1030)
(0010,1032)
Explanation - (0010,1040) records the patient’s ethnicity.
Correct answer is: (0010,1040)
Q.146 Which DICOM tag stores the 'SOP Instance UID'?
(0008,0018)
(0008,0016)
(0010,0010)
(0020,000D)
Explanation - (0008,0018) uniquely identifies each image instance.
Correct answer is: (0008,0018)
Q.147 What does the DICOM attribute (0020,0037) represent?
Patient Orientation
Study Description
Series Number
Accession Number
Explanation - (0020,0037) defines the orientation of the patient relative to the imaging plane.
Correct answer is: Patient Orientation
Q.148 Which protocol is used to secure PACS data in transit over the internet?
TLS/SSL over HTTPS
FTP
SMTP
SNMPv1
Explanation - TLS/SSL encrypts data during transmission.
Correct answer is: TLS/SSL over HTTPS
Q.149 Which DICOM tag holds the 'Manufacturer’s Model Name'?
(0008,1090)
(0008,1070)
(0008,1080)
(0008,1060)
Explanation - (0008,1090) stores the model name of the device.
Correct answer is: (0008,1090)
Q.150 What is the function of a 'PACS Archive Server'?
Store images
Render images for viewing
Compress images
Manage patient demographics
Explanation - The archive server holds the long-term imaging data.
Correct answer is: Store images
Q.151 Which attribute in DICOM indicates the image’s modality?
(0008,0060)
(0018,1000)
(0018,1030)
(0018,0050)
Explanation - (0008,0060) holds the Modality code.
Correct answer is: (0008,0060)
Q.152 What does DICOM 'C-GET' retrieve?
Image metadata
Images
Server status
Patient demographics
Explanation - C-GET requests images for local display.
Correct answer is: Images
Q.153 Which DICOM tag holds the 'Series Instance UID'?
(0020,000E)
(0020,000D)
(0020,0010)
(0020,0011)
Explanation - (0020,000E) identifies the series.
Correct answer is: (0020,000E)
Q.154 What is the main advantage of using JPEG2000 for medical images?
Higher compression ratio with lossless option
Faster upload times
Better color fidelity for skin tones
Simpler file format
Explanation - JPEG2000 supports both lossy and lossless compression at high ratios.
Correct answer is: Higher compression ratio with lossless option
Q.155 Which attribute holds the 'Manufacturer' of the imaging device?
(0008,0070)
(0008,0080)
(0010,0010)
(0008,0016)
Explanation - (0008,0070) is the Manufacturer field.
Correct answer is: (0008,0070)
Q.156 What is the purpose of a 'PACS Workstation'?
Store images
View and analyze images
Compress images
Archive patient records
Explanation - Workstations provide interfaces for clinicians to review images.
Correct answer is: View and analyze images
Q.157 Which attribute is used to identify the patient’s weight in DICOM?
(0010,1030)
(0010,1032)
(0010,1040)
(0010,1010)
Explanation - (0010,1030) contains the weight measurement.
Correct answer is: (0010,1030)
Q.158 What does the DICOM tag (0018,0020) indicate?
Patient Position
Slice Thickness
KVP
KVP
Explanation - (0018,0020) stores the slice thickness used in the scan.
Correct answer is: Slice Thickness
Q.159 Which DICOM service class is used to query metadata?
C-FIND
C-GET
C-MOVE
C-STORE
Explanation - C-FIND allows searching for image records.
Correct answer is: C-FIND
Q.160 Which DICOM tag stores the 'Study Instance UID'?
(0020,000D)
(0020,000E)
(0020,0010)
(0020,0011)
Explanation - (0020,000D) uniquely identifies a study.
Correct answer is: (0020,000D)
Q.161 What does 'DICOMweb' primarily provide?
Secure image viewing
Web-based DICOM services over HTTP/HTTPS
Local file storage
Image compression
Explanation - DICOMweb uses standard web protocols for image retrieval.
Correct answer is: Web-based DICOM services over HTTP/HTTPS
Q.162 Which attribute holds the 'Institution Address' in DICOM?
(0008,0090)
(0008,0091)
(0008,0092)
(0008,0093)
Explanation - (0008,0090) stores the address of the institution.
Correct answer is: (0008,0090)
Q.163 What does the DICOM 'C-STORE' service do?
Send images to a server
Retrieve images from a server
Query image metadata
Check server connectivity
Explanation - C-STORE uploads image data to the server.
Correct answer is: Send images to a server
Q.164 Which attribute holds the 'Series Instance UID'?
(0020,000E)
(0020,000D)
(0020,0010)
(0020,0011)
Explanation - (0020,000E) uniquely identifies a series.
Correct answer is: (0020,000E)
Q.165 Which of these is a valid DICOM transfer syntax?
Explicit VR Big Endian
Implicit VR Little Endian
JPEG2000 Lossless (16-bit)
PNG
Explanation - JPEG2000 supports both lossy and lossless transfer syntaxes.
Correct answer is: JPEG2000 Lossless (16-bit)
Q.166 What is the main purpose of the DICOM 'C-MOVE' operation?
Retrieve images locally
Move images between PACS servers
Query image metadata
Check server status
Explanation - C-MOVE instructs the server to forward images to another location.
Correct answer is: Move images between PACS servers
Q.167 Which attribute contains the 'Patient's Ethnicity' in DICOM?
(0010,1040)
(0010,1010)
(0010,1030)
(0010,1032)
Explanation - (0010,1040) holds the ethnicity of the patient.
Correct answer is: (0010,1040)
Q.168 What is the main use of the DICOM 'C-FIND' service?
Query image metadata
Send images to a server
Retrieve images
Check server connectivity
Explanation - C-FIND searches for records that match specified criteria.
Correct answer is: Query image metadata
Q.169 Which DICOM attribute stores the 'Pixel Spacing' values?
(0028,0030)
(0028,0002)
(0028,0100)
(0018,0050)
Explanation - (0028,0030) contains the spacing between pixels.
Correct answer is: (0028,0030)
Q.170 Which attribute holds the 'Manufacturer' field in DICOM?
(0008,0070)
(0008,0080)
(0008,0016)
(0008,0082)
Explanation - (0008,0070) records the name of the manufacturer.
Correct answer is: (0008,0070)
Q.171 What does the DICOM tag (0008,0018) represent?
SOP Instance UID
SOP Class UID
Series Instance UID
Study Instance UID
Explanation - (0008,0018) is the unique identifier for an image instance.
Correct answer is: SOP Instance UID
Q.172 Which DICOM attribute holds the 'Accession Number'?
(0008,0050)
(0008,0051)
(0008,0052)
(0008,0053)
Explanation - (0008,0050) contains the accession number.
Correct answer is: (0008,0050)
Q.173 Which service class is used for verifying PACS server connectivity?
C-ECHO
C-GET
C-MOVE
C-FIND
Explanation - C-ECHO checks whether a PACS server is reachable.
Correct answer is: C-ECHO
Q.174 What does the DICOM 'C-GET' service retrieve?
Images for local display
Image metadata
Server status
Patient demographics
Explanation - C-GET pulls images to the requesting client.
Correct answer is: Images for local display
Q.175 Which DICOM tag holds the 'Manufacturer's Software Versions'?
(0008,1010)
(0008,1011)
(0008,1012)
(0008,1013)
Explanation - (0008,1010) contains the software version info.
Correct answer is: (0008,1010)
Q.176 What is the purpose of DICOM 'Presentation State'?
Define compression
Set display window/level
Store patient demographics
Route images between devices
Explanation - It records display settings for consistent viewing.
Correct answer is: Set display window/level