Field of Spectroscopy for Obtaining a Focused Ion Beam

A technology for focusing ion beams and ion beams, which is applied in X-ray/γ-ray/particle irradiation therapy, treatment, radiotherapy, etc., and can solve the problems of limited lateral range, non-representation, modeled delivery deviation from the total delivered dose, etc.

Active Publication Date: 2022-05-24
RAYSEARCH LAB
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the limited lateral extent of the Bragg cell, a portion of the dose delivered by a single spot may be lost in the measurement, with the result that the measured IDD does not represent the complete IDD
If this difference is not accounted for, the modeled delivery may deviate significantly from the total delivered dose

Method used

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  • Field of Spectroscopy for Obtaining a Focused Ion Beam
  • Field of Spectroscopy for Obtaining a Focused Ion Beam
  • Field of Spectroscopy for Obtaining a Focused Ion Beam

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Embodiment Construction

[0030] Aspects of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which certain embodiments of the invention are shown. These aspects may, however, be embodied in many different forms and should not be construed as limiting, but rather these embodiments are provided by way of example so that this disclosure will be thorough and complete, and will cover all aspects of the invention. The scope is fully conveyed to those skilled in the art. Throughout the specification, the same numerals refer to the same elements.

[0031] figure 1 is a schematic diagram illustrating an environment in which the embodiments presented herein may be applied. The treatment planning system 1 determines how to deliver the radiation dose to the patient's target volume 3 . More specifically, the treatment planning system 1 provides the treatment plan 7 to the ion beam therapy delivery system 2 . The treatment plan 7 specifies weight...

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Abstract

The invention relates to the technical field of obtaining energy spectra of focused ion beams. The present invention provides a method of obtaining the energy spectrum of a focused ion beam when measuring integrated depth dose IDD using a Bragg cell. The method comprises the steps of: simulating the dose of a nominal set of monoenergetic focused ion beams; determining the lateral extension of the Bragg chamber for evaluation; and by laterally integrating the simulated set of nominal monoenergetic ion beams over the lateral extension of the Bragg chamber. Focuses the dose of the ion beam, calculates a set of theoretical component IDD curves CIDD; stores the calculated CIDD; uses a Bragg peak cell, obtains the measured IDD of the focused ion beam with nominal energy; and performs a linear combination of CIDD on the measured IDD to determine the energy spectrum for a focused ion beam of nominal beam energy.

Description

technical field [0001] The present disclosure relates to the field of radiation therapy, and in particular, to generating radiation therapy plans while confining to a subset of fluence elements. Background technique [0002] In ion beam therapy, an ion beam (eg, protons or heavy ions, such as carbon ions) is directed at a target volume. The target volume may, for example, represent a cancer tumor. The ions penetrate tissue and deliver a dose of energy to destroy cancer cells. One advantage of ion beam therapy is a pronounced peak in the dose distribution, known as the Bragg peak. The Bragg peak is the peak dose delivery that occurs at a certain depth, after which the dose delivery falls off rapidly. This can be compared to electron beam therapy or X-ray therapy, where the peak occurs very close to entering the tissue and the dose drop cannot be controlled with the same sharp drop as ion therapy. [0003] The depth of the Bragg peak in the patient can be controlled by adj...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N5/10
CPCA61N5/1065A61N5/1071A61N2005/1087A61N2005/1088A61N5/103H01J37/05H01J37/304
Inventor 马丁·扬松
Owner RAYSEARCH LAB
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