Motion management in mri-guided linac

A sports field, 3D technology, applied in the field of medical systems, can solve problems such as difficult to track OAR at the same time, difficult to use 2D slice positioning, difficult to perform dose calculation, etc.

Active Publication Date: 2017-09-26
ELEKTA AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods may have the following limitations: 1) there may be significant out-of-plane motion, which may be difficult to localize using 2D slices; 2) slices are often target-centered, making it difficult to simultaneously track (multiple) OARs; Information

Method used

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  • Motion management in mri-guided linac
  • Motion management in mri-guided linac
  • Motion management in mri-guided linac

Examples

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Embodiment Construction

[0020] Figure 1A An example of a radiation therapy apparatus such as a linear accelerator 10 is shown according to some embodiments of the present disclosure. Using the linac 10, a patient 42 may be positioned on a patient table 43 to receive a radiation dose determined by a treatment plan. The linear accelerator 10 may include a radiation head 45 that generates a radiation beam 46 . For example, the entire radiation head 45 may be rotatable about a horizontal axis 47 . In one example, under the patient table 43 , for example, a flat-panel scintillator detector 44 that can rotate synchronously with the radiation head 45 around the isocenter 41 can be arranged, for example. The point of intersection of the axis 47 with the center of the beam 46 produced by the radiation head 45 may be referred to as the "isocenter". The patient table 43 can be motorized so that the patient 42 can be positioned such that the tumor site is at or near the isocenter 41 . The radiation head 45 c...

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Abstract

Described herein is a system and method of controlling real-time image-guided adaptive radiation treatment of at least a portion of a region of a patient. The computer-implemented method comprises obtaining a plurality of real-time image data corresponding to 2-dimensional (2D) magnetic resonance imaging (MRI) images including at least a portion of the region, performing 2D motion field estimation on the plurality of image data, approximating a 3- dimensional (3D) motion field estimation, including applying a conversion model to the 2D motion field estimation, determining at least one real-time change of at least a portion of the region based on the approximated 3D motion field estimation, and controlling the treatment of at least a portion of the region using the determined at least one change.

Description

[0001] priority claim [0002] This patent application requires Priority of U.S. Provisional Patent Application Serial No. 62 / 090,601, filed December 11, 2014, entitled "MOTIONMANAGEMENT IN MRI-GU1DED LINAC," by Hebert interest, the entire content of this application is incorporated herein by reference. technical field [0003] The present disclosure relates to medical systems, and more particularly to nuclear magnetic resonance or other imaging or radiation therapy systems. Background technique [0004] Radiation therapy (also called radiotherapy) is used in the treatment of cancer or other diseases. A linear accelerator ("linac") may be used in radiation therapy to direct a radiation beam at a desired location on a patient. A linear accelerator can direct photons (eg, as X-rays), electrons, or other subatomic particles at a target such as a cancerous tumor. For example, the radiation beam can be shaped to match the shape of the tumor by using a multi-leaf collimator (...

Claims

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Application Information

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IPC IPC(8): A61N5/10A61B5/055G06T7/269
CPCG06T7/269A61B5/055A61N5/1049A61N5/1067A61N5/1068A61N5/107G06T2207/10088G06T2207/20048A61N2005/1055A61B5/0036G01R33/4808G01R33/56509G01R33/5676G06T7/207
Inventor 弗朗索瓦·保罗·乔治·雷涅·埃贝尔
Owner ELEKTA AB
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