SBRT 2016

New Skills and New Knowledge: Training

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+0.8

Calibrate positions of all nodes  At each node, the isocrystal is scanned in a grid pattern perpendicular to the incident beam  Light intensity map is recorded  Two 5 x 5 grids (coarse and fine)  The calibrated node corresponds to the center of the light intensity map  Must be performed separately for fixed cones and IRIS  Result: Node “error list”1

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nominal node 1 st iteration (coarse) calibrated node

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[mm]

+1.6

Adapted from Christoph Fürwerger