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Treating a treatment volume with therapeutic radiation using a multi-leaf collimation system

A multi-leaf collimation, therapeutic technology, used in therapy, radiation/particle treatment, radiation therapy, etc., can solve problems such as motor wear and tear

Pending Publication Date: 2020-11-13
VARIAN MEDICAL SYST INT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Complex aperture shapes can also cause excessive and premature wear of the motors that move the leaves in a multi-leaf collimator due to the largely redundant back and forth movement of the leaves

Method used

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  • Treating a treatment volume with therapeutic radiation using a multi-leaf collimation system
  • Treating a treatment volume with therapeutic radiation using a multi-leaf collimation system
  • Treating a treatment volume with therapeutic radiation using a multi-leaf collimation system

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Embodiment Construction

[0025] These and other benefits will become clearer through a thorough evaluation and study of the following specific implementations. The implementation described herein can be readily implemented using any of a wide variety of available and / or easily configurable platforms, including partially or fully programmable platforms known in the art or specialized platforms that may be desired for some applications. teaching. Referring now to the accompanying drawings, and in particular to figure 1 , an illustrative method for such an apparatus 100 will now be provided.

[0026] In this particular example, implementing means 100 includes a control circuit 101 . As a "circuit", the control circuit 101 thus includes a structure comprising at least one (and typically many) conductive paths (such as paths composed of a conductive metal such as copper or silver) that carry electrical power in an orderly fashion, Where the path(s) will typically also include corresponding electrical co...

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Abstract

A control circuit optimizes a radiation treatment plan for a patient treatment volume using an automatically iterating optimization process that optimizes as a function, at least in part, of predetermined cost functions, wherein at least one of the cost functions favors apertures for the multi-leaf collimation system having local curvature that deviates only minimally from a reference curvature. By one approach the control circuit determines the reference curvature as a function, at least in part, of at least one of setting the reference curvature to a static minimal local curvature, a shape of a projective mapping of the treatment volume onto an isocenter plane, and / or a fluence map associated with an amount of radiation to be administered to the treatment volume from a particular direction. By one approach the control circuit dynamically determines when to employ one or more such cost functions.

Description

technical field [0001] These teachings relate generally to treating a treatment zone of a patient with therapeutic radiation, and more particularly to the use of multi-leaf collimators. Background technique [0002] The use of radiation to treat medical conditions comprises a known area of ​​prior art endeavor. For example, radiation therapy includes an important component of many treatment plans for reducing or eliminating unwanted tumors. Unfortunately, the applied radiation is inherently indistinguishable between unwanted material and adjacent tissues, organs, etc. that are desirable or even critical to the continued survival of the patient. important. As a result, radiation is usually applied in a carefully applied manner in an attempt to at least confine the radiation to a given target zone. [0003] A treatment plan is generally used to specify any number of operating parameters related to administering such treatment to a given patient using a particular radiation ...

Claims

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Application Information

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IPC IPC(8): A61N5/10
CPCA61N5/1036A61N5/1031A61N5/1045G21K1/046
Inventor S·T·T·奥利拉J·I·诺德J·Y·佩尔托拉
Owner VARIAN MEDICAL SYST INT AG
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