DICOM PS3.3 2018d - Information Object Definitions

C.8.8.29.4 Double Exposure Field Delta (Current)
Prev | C.8.8.29 RT Beams Delivery Instruction Module | Next

##### C.8.8.29.4 Double Exposure Field Delta

The following diagram illustrates the case where the second X aperture in a double exposure is larger than the initial aperture. In this case ΔX1 is negative and ΔX2 is positive. If a field edge is defined by a multileaf collimator, then the field delta is to be applied to the most open leaf, such that all leaves can be moved to that position.

Figure C.8.8.29-1. Double Exposure Field Delta

Prev | Up | Next
C.8.8.29.3 Meterset Exposure | Home | C.8.8.29.5 Beam Order Index

DICOM PS3.3 2018d - Information Object Definitions