TID 2123 Circumpapillary Retinal Nerve Fiber Layer Key Measurements

TID 2123 Circumpapillary Retinal Nerve Fiber Layer Key Measurements (Current)
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Type:: Extensible
Order:: Non-Significant
Root:: Yes

Table TID 2123. Circumpapillary Retinal Nerve Fiber Layer Key Measurements

	NL	Rel with Parent	VT	Concept Name	VM	Req Type	Condition	Value Set Constraint
1			CONTAINER	EV (131242, DCM, "Circumpapillary Retinal Nerve Fiber Layer 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	U		$Method = DCID 4282 “Retinal Sector Methods” $Measurement = EV (131274, DCM, "Retinal ROI width") $OptMeasurement = DCID 4283 “RNFL Sector Measurements”
6	>	CONTAINS	INCLUDE	DTID 2120 “Ophthalmology Measurements Group”	1-n	U		$Method = EV (131308, DCM, "RNFL Clockface Method") $Measurement = DCID 4284 “RNFL Clockface Measurements”
7	>	CONTAINS	INCLUDE	DTID 300 “Measurement”	1	MC	IFF RNFL thickness measurements made on both eyes	$Measurement = EV (131273, DCM, "Retinal nerve fiber layer symmetry") $Units =(%, UCUM, "%")

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.

Applications also use various approaches to identifying different sectors of the retina when measuring the RNFL thickness. The sector definition used is specified by a concept from CID 4282 “Retinal Sector Methods”. Measurements that match the sector names defined by the method may be selected from CID 4283 “RNFL Sector Measurements” to be included in the key measurements.

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

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