10.19 Exposure Index Macro
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## 10.19 Exposure Index Macro

Table 10-23 describes the attributes for describing the Exposure Index for single projection X-ray images, as described by IEC 62494-1 and the report of AAPM Task Group 116.

Table 10-23. Exposure Index Macro Attributes

Attribute Name | Tag | Type | Attribute Description
--- | --- | --- | ---
Exposure Index | (0018,1411) | 3 | Measure of the detector response to radiation in the relevant image region of an image acquired with a digital x-ray imaging system as defined in IEC 62494-1. ### Note A string rather than binary Value Representation is used for this Attribute, in order to allow the sender to control the precision of the value as suggested in the report of AAPM Task Group 116. This index value is scaled as defined by IEC 62494-1.
Target Exposure Index | (0018,1412) | 3 | The target value used to calculate Deviation Index (0018,1413) as defined in IEC 62494-1.
Deviation Index | (0018,1413) | 3 | A scaled representation of the difference of the Exposure Index compared to the Target Exposure Index as defined in IEC 62494-1 and the report of AAPM TG 116.

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