发明名称 |
Systems And Methods For Isotopic Source External Beam Radiotherapy |
摘要 |
The subject matter described herein provides methods for developing an IMRT treatment plan for a radiotherapy system. In one aspect, the method can include providing initial treatment parameters. These parameters can include a number of isotopic beams, a transmission angle for each beam, a prescribed dose for a target, and dose volume histogram constraints. The method can further include determining an initial fluence map including one or more beamlets. The initial fluence map can specify a fluence value for each beamlet. The method can further include determining a delivery sequence for the fluence values in the initial fluence map. The delivery sequence can include one or more apertures formed by the leaves of a collimator. These apertures can have a specified size constrained to substantially less than a maximum size associated with the collimator, when the isotopic beam is near a critical structure. Related apparatus and systems are also described. |
申请公布号 |
US2014275696(A1) |
申请公布日期 |
2014.09.18 |
申请号 |
US201313830794 |
申请日期 |
2013.03.14 |
申请人 |
VIEWRAY, INCORPORATED |
发明人 |
Dempsey James F.;Kawrykow Iwan |
分类号 |
A61N5/10 |
主分类号 |
A61N5/10 |
代理机构 |
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代理人 |
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主权项 |
1. A method comprising:
providing one or more initial treatment parameters selected from a group consisting of a number of isotopic beams, isocenters for each isotopic beam, a prescribed dose for a target, a maximum dose for a critical structure, and one or more dose volume histogram constraints; determining an initial fluence map including one or more beamlets, the initial fluence map specifying a fluence value for each of the one or more beamlets; and determining a delivery sequence for the fluence values in the initial fluence map, the delivery sequence including one or more apertures formed by a first set of one or more leaves and a second set of one or more leaves in a collimator, the one or more apertures having a specified size constrained to substantially less than a maximum size associated with the collimator, when the isotopic beam is near the critical structure. |
地址 |
Oakwood Village OH US |