Questions and Answers
SOP classes never get changed, added or retired.
False
Every SOP class has its own UID.
True
The storage SOP classes are only for images.
False
The verification SOP class is used to confirm a device is connected to the network and it can make DICOM associations.
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How many SOP classes are listed in appendix A.3 of the DICOM textbook?
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What is the SOP class UID for CT Image Store?
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What SOP class does not have an IOD?
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What is the DIMSE for the verification SOP class?
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Which special search character performs list matching?
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Which special search character performs wildcard matching?
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Which special search character performs range matching?
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What is the DIMSE for a query?
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A SOP class is made up of what two things?
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What are the three levels of searches?
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What does SOP stand for?
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Study Notes
DICOM SOP Classes Overview
- SOP classes (Service-Object Pair classes) in DICOM are stable and are not subjected to changes, additions, or retirements throughout their lifecycle.
- Each SOP class is uniquely identified by its own UID (Unique Identifier), which ensures clear identification.
- Contrary to some beliefs, storage SOP classes can pertain not only to images but also to other types of data.
Verification SOP Class
- The verification SOP class is vital for confirming network connections and enabling DICOM associations between devices.
- It notably lacks an Information Object Definition (IOD), distinguishing it from other SOP classes.
DICOM Textbook Reference
- The DICOM textbook, in appendix A.3, enumerates a total of 187 SOP classes, providing a comprehensive reference for understanding available classes.
Specific SOP Class UIDs
- The SOP class UID for the CT (Computed Tomography) Image Store is 1.2.840.10008.5.1.4.1.1.2, a key identifier for this imaging modality.
DIMSE Protocols
- C-ECHO is the DIMSE (DICOM Message Service Element) associated with the verification SOP class, allowing for communication confirmation.
- C-FIND serves as the DIMSE for query operations, facilitating search functionalities within the DICOM system.
Special Search Characters
- The backslash is used for list matching in query searches.
- An asterisk functions as a wildcard match, allowing broader search capabilities.
- A hyphen designates range matching, enabling the definition of specific ranges in search queries.
DICOM Object Composition
- A SOP class consists of two main components: a DICOM object and a DICOM service, which collectively define the functionalities and data structures.
Levels of Searches
- Three hierarchical levels of searches in DICOM include patient-level, study-level, and patient study-level, allowing variations based on how detailed the search needs to be.
Definition of SOP
- SOP stands for Service Object Pair, encapsulating the integration of a service and a related object within the DICOM framework.
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Test your knowledge on DICOM SOP classes with these flashcards. Understand the definitions and true/false aspects of various SOP classes, including their UIDs and functionalities. Perfect for anyone studying medical imaging standards.
