CP-2542 Clarify Image Region Concept Status Assigned Date of Last Update 2026/04/20 Person Assigned David Clunie Submitter Name Daniela Schacherer Submission Date 2025/04/24 Correction Number CP-2542 Log Summary: Clarify Image Region Concept Name of Standard PS3.16 Rationale for Correction: The definition of Image Region is unnecessarily specific to one of its potential uses and could be generalized to allow its re-use in other contexts. [Ed.Note: What is the relationship to NCIt:C85402 "Imaging Region of Interest", which is defined as "A specific area of interest defined by a sequence of image overlays or a sequence of contours described as a single point (for a point ROI) or more than one point (representing and open or closed polygon)."? Replacement of DCM:111030 would be disruptive. Corresponding UMLS:C2827628 has no other mappings than to NCIt concept.] [Ed.Note: Initial use of DCM:111030 with SCOORD-specific definition was in Sup 50 Mammography CAD supplement, then re-used for planar and volume measurements in CP-1112.] Correction Wording: <informaltable rules="all" frame="box"> <tr> <td> <para><emphasis role="italic">Amend DICOM PS3.16 as follows (changes to existing text are bold and <emphasis role="bold"><emphasis role="underline">underlined</emphasis></emphasis> for additions and <emphasis role="bold"><emphasis role="strikethrough">struckthrough</emphasis></emphasis> for removals):</emphasis></para> </td> </tr> </informaltable> <section label="D" status="1" xml:id="chapter_D"> <title>DICOM Controlled Terminology Definitions (Normative)
DICOM Controlled Terminology Definitions (Coding Scheme Designator "DCM" Coding Scheme Version "01")
Code Value Code Meaning Definition Notes
111030 Image Region Purpose of reference for an SCOORD Content Item that identifies aA specific region of interest within an image. May be used as the Purpose of Reference for a Content Item of value type COMPOSITE or SCOORD. May be used to name a value used to communicate the identifier of a region of interest.
130488 Region in Space A continuous part of space, not necessarily associated with a particular image.
130489 Referenced Region of Interest Identifier A reference to an identifier of a Region of Interest. For example, the value of ROI Number (3006,0022) within an Item of Structure Set ROI Sequence (3006,0020) in an Instance of RT Structure Set Storage SOP Class.
For reference unchanged DICOM PS3.16:
Planar ROI Measurements and Qualitative Evaluations
Planar ROI Measurements and Qualitative Evaluations
NL Rel with Parent VT Concept Name VM Req Type Condition Value Set Constraint
5 > CONTAINS SCOORD EV (111030, DCM, "Image Region") 1 MC XOR Rows 7, 7b, 8b GRAPHIC TYPE = not {MULTIPOINT}
6 >> SELECTED FROM IMAGE 1 M
... I
8b > CONTAINS COMPOSITE EV (130488, DCM, "Region in Space") 1 MC XOR Rows 5, 7, 7b Reference shall be to an Instance of the RT Structure Set Storage SOP Class.
8c >> HAS PROPERTIES TEXT EV (130489, DCM, "Referenced Region of Interest Identifier") 1 M Shall be the value of ROI Number (3006,0022) within the single referenced Item of Structure Set ROI Sequence (3006,0020) of the referenced Instance of the RT Structure Set Storage SOP Class.
9 > CONTAINS IMAGE EV (121200, DCM, "Illustration of ROI") 1 U
Content Item Descriptions Rows 8b, 8c A reference to a single ROI that defines a planar ROI, within an RT Structure Set.
Specific Observation Subject Class Version: 20221201
Specific Observation Subject Class
Coding Scheme Designator Code Value Code Meaning SNOMED-RT ID UMLS Concept Unique ID
DCM 121025 Patient
DCM 113014 Study
DCM 113015 Series
NCIt C48179 Image C1704922
DCM 130781 Image frame
NCIt C85402 Imaging Region of Interest C0807727
SCT 260893003 Waveform G-C0AE C0450448