TID 2125 Ganglion Cell Key Measurements

TID 2125 Ganglion Cell Key Measurements (Current)
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Type:: Extensible
Order:: Non-Significant
Root:: Yes

Table TID 2125. Ganglion Cell Key Measurements

	NL	Rel with Parent	VT	Concept Name	VM	Req Type	Value Set Constraint
1			CONTAINER	EV (131244, DCM, "Ganglion Cell Key Measurements")	1	M
2	>	HAS CONCEPT MOD	INCLUDE	DTID 1204 “Language of Content Item and Descendants”	1	U
3	>	HAS OBS CONTEXT	INCLUDE	DTID 1002 “Observer Context”	1-n	U
4	>	HAS OBS CONTEXT	INCLUDE	DTID 4019 “Algorithm Identification”	1	M
5	>	CONTAINS	INCLUDE	DTID 2120 “Ophthalmology Measurements Group”	1-n	M	$TargetSiteMod= DCID 4286 “Ganglion Cell Measurement Extent” $Method = DCID 4289 “Ganglion Cell Sector Methods” $Measurement = DCID 4287 “Ganglion Cell Key Measurements” $OptMeasure = DCID 4288 “Ganglion Cell Sector Measurements” $TableName = DT (131298, DCM, "Average ganglion cell thickness in posterior pole grid")

Content Item Descriptions

Row 5

For example, TID 2120 may be invoked once for each eye, or multiple times for a trend series for a single eye.

Methods to measure the Ganglion Cell thickness vary widely. This template requires the SOP Instance creator application to specify which other cell layers, if any, are measured with the Ganglion Cell Layer proper (using a concept from CID 4286 “Ganglion Cell Measurement Extent”).

Applications also use various methods to identify different sectors of the retina when measuring the Ganglion Cell thickness. The sector definition used is specified by a concept from CID 4289 “Ganglion Cell Sector Methods”. Measurements matching the sector names defined by the method may be selected from CID 4288 “Ganglion Cell Sector Measurements”. If the sector method uses a rectangular or elliptical ROI, the sector measurements should include both the ROI width and height.

If optional measurements using (131298, DCM, "Average ganglion cell thickness in posterior pole grid") are present, the SOP Class of the instance must support the TABLE Content Item Value Type (e.g., the Extensible SR Storage SOP Class).

Receiving applications are cautioned about comparing or aggregating measurements from measurement groups with different measurement extents or sector methods.

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TID 2124 Macular Thickness Key Measurements	Home	TID 2126 Endothelial Cell Count Key Measurements