C.4.3.4 Numeric Observations
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#### C.4.3.4 Numeric Observations

SR NUM Content Items shall be mapped to Quantity Measurement entries.

Table C.4-9. CDA Quantity Measurement mapping from SR NUM

CDA Business Name | DICOM SR
--- | ---
QuantityMeasurement[*]: MeasurementName | Concept Name Code Sequence (0040,A043)
QuantityMeasurement[*]: MeasurementValue | Measured Value Sequence (0040,A300) > Numeric Value (0040,A30A)
QuantityMeasurement[*]: MeasurementUnits | Measured Value Sequence (0040,A300) > Measurement Units Code Sequence (0040,08EA) > Code Value (0008,0100)
QuantityMeasurement[*]: Time | Observation DateTime (0040,A032)
QuantityMeasurement[*]: InterpretationCode |
QuantityMeasurement[*]: ActionableFindingCode |
QuantityMeasurement[*]: TargetSite | (G-C0E3, SRT, "Finding Site")
QuantityMeasurement[*]:Laterality | (G-C0E3, SRT, "Finding Site") > (G-C171, SRT,"Laterality")
QuantityMeasurement[*]:Method | (G-C036, SRT, "Measurement Method")
QuantityMeasurement[*]:TopoModifier | (G-A1F8, SRT, "Topographical modifier")
QuantityMeasurement[*]: SOPInstance | [See C.4.3.3]
QuantityMeasurement[*]: QuantityMeasurement | [See C.4.3.4]

The SR templates invoked for NUM measurements from TID 2000 do not specifically include finding site, laterality, and topographical modifiers, but these modifiers are not forbidden in the template, they are used in many other NUM value templates (e.g., TID 300 Measurement), and may be present in a SR SOP Instance being transformed to CDA.

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