Systems and methods for linear accelerator radiation therapy using magnetic resonance imaging
A linear accelerator and magnetic resonance imaging technology, which is applied in the fields of measurement using nuclear magnetic resonance imaging system, radiotherapy, X-ray/γ-ray/particle irradiation therapy, etc., can solve the problems of destroying MRI imaging ability and destroying high-quality MRI images, etc.
Active Publication Date: 2018-07-06
VIEWRAY TECH
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Problems solved by technology
While MRI and radiation therapy systems such as linear accelerators (linacs) have operated independently of each other for a long time, combining the two technologies presents a number of significant technical challenges
These technical challenges include the magnetic fields and eddy currents generated in ferromagnetic and conductive radiation therapy equipment that pass through the MRI's main magnet and gradient coils, both of which can destroy the MRI's ability to provide high-quality images
In addition, the main magnetic field of MRI can interfere with many components of the linac, and the high power radio frequency (RF) generated by the linac components can also destroy the imaging ability of MRI
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[0023] Disclosed herein are systems and methods for combining radiation therapy and magnetic resonance imaging. figure 1 is a simplified schematic diagram of an exemplary radiation therapy system that includes a shielded container 104 mounted on a gantry 106 that can be rotated to different positions to enable radiation delivery from different angles. exist figure 1 The exemplary system shown in also includes an MRI 102, which can be used for real-time imaging during radiation therapy, and can be a split or open MRI as shown (since the radiation beam does not need to be transmitted through the sides of the MRI, So it's beneficial). The radiation therapy device may be placed within the protective container 104 and may be used to direct the treatment beam to a target within the patient 108 lying on the examination table 110 . Also shown is a waveguide 112, which may be used to connect radiotherapy device components, as explained further below. figure 2 show figure 1 A top v...
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Abstract
A system and method for delivering linac therapy in conjunction with magnetic resonance imaging, wherein components of the linac can be placed in a protective container surrounding a gantry, can be connected to RF waveguides, and can use a variety of magnetic and radiofrequency Systems and methods for protection.
Description
[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority to US Patent Application Serial No. 13 / 841,478, filed March 15, 2013, entitled "Systems and Methods For LinearAccelerator Radiotherapy With Magnetic Resonance Imaging," the filing date and disclosure of which is incorporated by reference in its entirety Incorporated herein. technical field [0003] The present invention relates to systems and methods for the delivery of linear accelerator radiation therapy in conjunction with magnetic resonance imaging. Background technique [0004] Using a magnetic resonance imaging system (MRI) to combine radiation therapy with repetitive, real-time imaging to better localize and treat the target while avoiding nearby healthy tissue is ideal. Although MRI and radiation therapy systems such as linear accelerators (linear accelerators) have been operating independently of each other for a long time, combining the two techniques presents a number of sign...
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IPC IPC(8): A61N5/10G01R33/48
CPCA61N2005/1055G01R33/3806G01R33/422G01R33/4808A61N2005/1094Y10T29/49018A61N5/1049G01R33/3607G01R33/421
Inventor 詹姆士·F·登普西施玛瑜·M·施瓦特斯曼
Owner VIEWRAY TECH