916-917 / 3107
2-D Verification
•
Visualisation of bony anatomy, some soft tissue, implanted
radio-opaque markers.
•
Only suitable for tumours closely related to bony anatomy
and/or restricted tumour movement.
•
Used for
•
QA: Measurement of beam shape
•
In vivo dosimetry
•
Orthogonal portal images acquired at cardinal angles allow
field placement assessment in 3 directions:
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AP for LR and SI displacement;
•
LAT for AP and SI displacement.
•
It may be necessary to produce fields for imaging purposes
only.