TID 2120 Ophthalmology Measurements Group

TID 2120 Ophthalmology Measurements Group (Current)
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This Template is a proper subset of TID 1501, with some optional extensions, and may be processed by a receiving application in the same way. The parameters used in this Template are identical to those parameters as used in TID 1501. However, this Template is specialized for ophthalmology (finding site "Eye") , and makes mandatory a Content Item for each measuement or finding concept specified in the invoking Template in the Context Groups invoked for the $Measurement parameter (TID 1501 has no mandatory content).

Table TID 2120. Parameters

Parameter Name	Parameter Usage
$TargetSiteMod	Value for Anatomic Location of measurement
$Method	Value for Measurement Method
$Measurement	Coded term or Context Group for Concept Name of mandatory measurements
$OptMeasure	Coded term or Context Group for Concept Name of optional measurements
$TableName	Coded term for Concept Name of a table of measurements

Type:: Extensible
Order:: Non-Significant
Root:: No

Table TID 2120. Ophthalmology Measurements Group

	NL	Rel with Parent	VT	Concept Name	VM	Req Type	Condition	Value Set Constraint
1		CONTAINS	CONTAINER	EV (125007, DCM, "Measurement Group")	1	M
2	>	HAS CONCEPT MOD	CODE	EV (363698007, SCT, "Finding Site")	1	M		EV (81745001, SCT, "Eye")
3	>>	HAS CONCEPT MOD	CODE	EV (272741003, SCT, "Laterality")	1	M		DCID 247 “Laterality Left-Right Only”
4	>>	HAS CONCEPT MOD	CODE	EV (106233006, SCT, "Topographical modifier")	1	MC	IFF Template is invoked with a non-empty $TargetSiteMod parameter	$TargetSiteMod
5	>	HAS CONCEPT MOD	CODE	EV (370129005, SCT, "Measurement Method")	1	MC	IFF Template is invoked with a non-empty $Method parameter	$Method
6	>	HAS OBS CONTEXT	CODE	EV (418775008, SCT, "Finding Method")	1	MC	IFF measurements made with ROI or sector grid positioned differently from prior analyses	EV (131247, DCM, "Repositioned ROI or grid")
7	>	HAS OBS CONTEXT	INCLUDE	DTID 4108 “Tracking Identifier”	1	U
8	>	CONTAINS	INCLUDE	DTID 300 “Measurement”	1-n	MC	IFF Template is invoked with a non-empty $Measurement parameter (see Content Item Description)	$Measurement = $Measurement
9	>	CONTAINS	INCLUDE	DTID 300 “Measurement”	1-n	U		$Measurement = $OptMeasure
10	>	CONTAINS	TABLE	$TableName	1	U
11	>	CONTAINS	IMAGE	EV (121112, DCM, "Source of Measurement")	1-n	U
12	>	CONTAINS	NUM	EV (111694, DCM, "Image Set Quality Rating")	1	UC	XOR Row 13	UNITS = EV ({0:100}, UCUM, "range:0:100") Value = 0 - 100
13	>	CONTAINS	CODE	EV (111101, DCM, "Image Quality")	1	UC	XOR Row 12	BCID 3114 “Study Quality”
14	>	CONTAINS	IMAGE	EV (130401, DCM, "Visual explanation")	1	U
15	>	CONTAINS	COMPOSITE	EV (130401, DCM, "Visual explanation")	1	U
16	>	CONTAINS	TEXT	EV (121106, DCM, "Comment")	1	U

Content Item Descriptions

Row 8	Mandatory numeric findings of the measurement group. Each Concept specified in the Value Set Constraints (i.e., as specified in the invoking Template $Measurement parameter) shall be encoded in a NUM Content Item. Thus if there are eight concepts in the specified Context Group, eight NUM Content Items in accordance with TID 300 will be present. Note that the NUM Content Item allows an absent value with an associated reason code per CID 42, e.g., (114007, DCM, "Measurement not attempted"). TID 300 “Measurement” defines an optional capability to specify properties of a measurement via TID 310 “Measurement Properties”. TID 310 supports properties such as normality, statistical properties (through subsidiary TID 311), normal ranges (subsidiary TID 312) , level of significance and more. Normality flags are highly useful and commonly provided by implementations.
Row 9	Optional numeric measurements of the measurement group.
Row 10	Optional table of numeric measurements of the measurement group.
Row 11	Reference to the original image(s) , e.g., Ophthalmic Tomography, that provided the data analyzed to produce the measurements in this group.
Rows 12, 13	A numeric (row 12) or categorical (row 13) rating of the quality of the source images for the purpose of producing the measurements in this group.
Rows 14, 15	May be a reference to a Secondary Capture Image (row 14) or Encapsulated PDF (row 15) rendering of the set of measurements and findings encoded in this Measurement Group, and possibly additional data.

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