Modulated radiation beam alignment for medical linear accelerators

A linear accelerator and radiation field technology, applied in the field of radiation therapy, can solve problems such as the inability to reduce mechanical errors

Pending Publication Date: 2022-03-01
AKTINA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Often, little can be done to reduce these mechanical errors, and mechanical errors are currently accepted as inaccuracies in patient care

Method used

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  • Modulated radiation beam alignment for medical linear accelerators
  • Modulated radiation beam alignment for medical linear accelerators
  • Modulated radiation beam alignment for medical linear accelerators

Examples

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Embodiment Construction

[0075] 2.1 Radiation beam alignment

[0076] Figure 4 A cross-sectional view of a gantry 102 of a linear accelerator (LINAC) 100 and a radiation beam 104 emitted by the LINAC 100 is shown in accordance with some aspects. In some ways, such as Figure 4 As shown, the radiation beam 104 may include a central beam axis 412 , an upper beam edge 414 and a lower beam edge 416 . In some ways, such as Figure 4 As shown, radiation beam 104 may be generated in LINAC 100 by accelerating electrons within waveguide 402 and bending electrons downward by exiting the window. In some aspects, electrons can be bent (eg, downward) using one or more bending magnets 404 (eg, one or more electromagnets). In some aspects, one or more bending magnets 404 allow for changing the angle 408 at which the electron beam 104 is pointed at the target, which also changes the direction that the radiation beam 104 takes as it exits the collimator 410 of the LINAC 100 . In some aspects, these changes can e...

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Abstract

Systems and methods for transmitting a radiation beam using a linear accelerator (LINAC). Optimal beam alignment parameters may be determined and stored for each of the N gantry angles. The beam alignment parameter may adjust the current supplied to one or more curved magnets of the LINAC and thus change the angle and direction of the radiation beam. The optimal beam alignment parameter for the gantry angle may be determined by adjusting the beam alignment parameter until the center of the radiation field of the radiation beam in the radiation transmission image is at the center of the shadow of a radiation opaque mark, which may be at the radiation isocenter. Beam alignment parameters stored for N rack angles can be used to adjust the beam steering current as the rack rotates through any arbitrary rack angle.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application Serial No. 63 / 070,456, filed August 26, 2020, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention generally relates to radiation therapy in which a medical linear accelerator (LINAC) delivers a radiation beam to a precise point within a patient. Background technique [0004] 1.1. Mechanical rotation [0005] Radiation therapy is a cancer treatment that uses strong, high-energy radiation beams to kill cancer cells. During treatment, if figure 1 and 2 As shown, a gantry 102 of a medical linear accelerator (LINAC) 100 delivers a radiation beam 104 to a precise point within a patient (not shown) supported by a treatment couch 106 . During treatment, the gantry 102 of the linac 100 is rotated to different gantry angles, including, for example, 0° and 180°, such as figure 1 and 2 As show...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10
CPCA61N5/1001A61N5/1049A61N5/1077A61N5/1042A61N2005/1054A61N2005/1061A61N2005/1092A61N5/1075A61N2005/1076A61N5/1047A61N5/1081A61N2005/1051
Inventor 尼古拉斯·G·扎卡罗普洛斯
Owner AKTINA CORP
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