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Fig. 1 | Radiation Oncology

Fig. 1

From: The effect of prone and supine treatment positions for the pre-operative treatment of rectal cancer on organ-at-risk sparing and setup reproducibility using volumetric modulated arc therapy

Fig. 1

Prone (a) and supine (b) VMAT rectum treatment plans. Axial and coronal slices are shown. The arrows indicate the VMAT arcs, which were always posteriorly applied. The supine VMAT plan necessarily has two arcs due to the Elekta linacs’ inability to over-travel past gantry angle 180°. c A carbon fiber belly board used for prone setup of rectal cancer patients. The belly board is setup on a Hexapod couch in this image (not used for rotational correction for rectal cancer patients at our center). The top of the belly board is 89 cm above the floor at the lowest position

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Radiation Oncology

ISSN: 1748-717X

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