A.19 RT Structure Set Information Object Definition

A.19.1 RT Structure Set IOD Description

The focus for this Radiotherapy Structure Set IOD (RT Structure Set IOD) is to address the requirements for transfer of patient structures and related data defined on CT scanners, virtual simulation workstations, treatment planning systems and similar devices.

A.19.2 RT Structure Set IOD entity-relationship model

The E-R model for the RT Structure Set IOD is illustrated in Figure A.19-1.

[pic] Figure A.19-1—DICOM RT Structure Set IOD information model

A.19.3 RT Structure Set IOD Module Table

Table A.19.3-1—RT STRUCTURE SET IOD MODULES

IE Module Reference Usage
Patient Patient C.7.1.1 M
Clinical Trial Subject C.7.1.3 U
Study General Study C.7.2.1 M
Patient Study C.7.2.2 U
Clinical Trial Study C.7.2.3 U
Series RT Series C.8.8.1 M
Clinical Trial Series C.7.3.2 U
Equipment General Equipment C.7.5.1 M
Structure Set Structure Set C.8.8.5 M
ROI Contour C.8.8.6 M
RT ROI Observations C.8.8.8 M
Approval C.8.8.16 U
SOP Common C.12.1 M

Note: The Audio Module was previously included in this IOD but has been retired. See PS 3.3 2004.