Evaluation of arcs for a radiation treatment plan
US11607559B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2018 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Dec 27, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1035
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
It is provided a method for determining arc costs. The method comprises the steps of: determining a plurality of beam orientations; evaluating a set of at least one cost function comprising an intermediate exposure cost function that is evaluated by performing the substeps of: projecting the at least one target volumes on a beam plane; determining an alignment angle based on a collimator angle value; finding any intermediate area in the beam plane along the alignment angle between areas of the at least one target volume projection; determining a value of the intermediate exposure cost function. The method further comprises the steps of: finding a plurality of arcs, wherein each arc comprises a sequence of a plurality of beam orientations; and calculating, for each arc in the plurality of arcs, at least one arc cost based on the cost function values of the beam orientations of the arc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.