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Shielding structures for linear accelerators

A shielding structure and accelerator technology, applied in linear accelerators, pharmaceutical devices, other medical devices, etc., can solve problems such as the need for mechanical gaps, increased cost, volume occupied by weight, large gap holes, etc.

Active Publication Date: 2017-10-24
VARIAN MEDICAL SYSTEMS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One limitation of conventional design and implementation is that mechanical clearance is required to avoid collision of guide 14 with honeycomb 10 and magnetic shield 12 etc.
The added clearance results in a larger clearance hole for the tripod feature 16 which must be prevented from reaching the hive 10 using additional shielding extensions
The added clearance also results in an increased shield diameter to provide the required attenuation, which increases cost, weight and volume in the rack

Method used

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  • Shielding structures for linear accelerators
  • Shielding structures for linear accelerators
  • Shielding structures for linear accelerators

Examples

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Embodiment Construction

[0023] Various embodiments of linear accelerators and shielding structures are described. It should be understood that this disclosure is not limited to the particular embodiments so described. Aspects described in connection with a particular embodiment are not necessarily limited to that embodiment, and may be practiced in any other embodiment.

[0024] All technical terms and scientific terms used herein have the meanings commonly understood by those of ordinary skill in the art, unless otherwise specifically defined. As used in the specification and the appended claims, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. Unless the context clearly dictates otherwise, the term "or" means a non-exclusive "or".

[0025] As used herein, the term "accelerator guide" or "guide" refers to a component of an electron linear accelerator that includes an electron gun, a target, and a plurality of accelerating cavities coupl...

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Abstract

An apparatus includes an accelerator guide and a shielding structure enclosing the accelerator guide. The accelerator guide includes an electron source at a first end, a target at a second end, and a plurality of accelerating cavities coupled in series along a longitudinal axis between the first end and the second end. The accelerator guide has a contour as viewed in the longitudinal axis. The shielding structure has an inner wall surface defining a contour as viewed in the longitudinal axis generally conformal to the contour of the accelerator guide.

Description

technical field [0001] Embodiments of the present disclosure relate generally to radiation therapy devices. In particular, various embodiments of compact integrated shield structures for linear accelerators are described. Background technique [0002] Radiation machines, such as medical linear accelerators, are used to produce high-energy radiation to treat cancer patients. Depending on the type of cancer, the location of the tumor, the size of the tumor and its surrounding key organs, and the size of the patient, medical linear accelerators can operate at high energies from about 4MV to about 20MV during radiation therapy. To ensure safety, protective measures such as various radiation shielding are necessary to limit harmful radiation to acceptable levels for patients outside the planned treatment area, as well as for radiation therapists and the general public. [0003] Figure 1A and Figure 1B A conventional beehive or shield structure 10 for a linear accelerator is ...

Claims

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Application Information

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IPC IPC(8): G21F5/00H05H7/00
CPCG21F5/00H05H7/00A61N5/10H05H9/04H05H2277/11A61N2005/1094A61N2005/1095H05H7/22H05H7/18H05H9/044H05H2007/225A61N5/1077H05H9/00
Inventor M·E·特雷尔B·H·盖德伦德
Owner VARIAN MEDICAL SYSTEMS
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