Physics Bucharest 2017
6/3/2017
Treatment plan comparison for an abdominal lesion – 7 coplanar equi-spaced beams versus 5 non-coplanar beams
While non-co-planar beams do offer improvement in dose distributions, Delivery times with standard linacs needs to be considered
7 equi-spaced coplanar beams
Solid lines: 7 coplanarequi-space d beams Dashed lines: 5 optimized beams
5 non-coplanar beams
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Courtesy of Uwe Oelfke
The inverse problem
Factors Affecting Optimization Results
Number of beams
Beam orientation
Optimization parameter and dose constraints
Experience is gold! Planning studies are a good way of gaining experience. Experience can be fed into “Class solutions” or automated planning Optimization algorithm and objective function
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