Moving object tracking device for radiation therapy, radiation area determination device for radiation therapy, and radiation therapy device

A moving object and tracking device technology, applied in X-ray/γ-ray/particle irradiation therapy, radiotherapy, treatment, etc., can solve the problem of affected part movement

Inactive Publication Date: 2019-01-22
NAT INST FOR QUANTUM & RADIOLOGICAL SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, sometimes the affected part moves as the patient breathes

Method used

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  • Moving object tracking device for radiation therapy, radiation area determination device for radiation therapy, and radiation therapy device
  • Moving object tracking device for radiation therapy, radiation area determination device for radiation therapy, and radiation therapy device
  • Moving object tracking device for radiation therapy, radiation area determination device for radiation therapy, and radiation therapy device

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Embodiment Construction

[0033] Embodiments of the present invention will be described below with reference to the drawings. figure 1 is a schematic diagram of the radiation therapy apparatus according to the present invention, figure 2 is a block diagram showing its main control system. In addition, the radiation irradiating unit 35 and the X-ray imaging unit 36 ​​of this radiation therapy apparatus are independent devices each equipped with a control unit, but in figure 2 In , the functional configuration of the entire radiation therapy apparatus is shown in a block diagram. in addition, figure 2 In the radiation therapy apparatus, the structures other than the storage unit 30, the radiation irradiation unit 35, the CT imaging device 37, and the treatment planning device 38 constitute the moving object tracking device for radiation therapy or the determination of the irradiation area for radiation therapy according to the present invention. device.

[0034]This radiation therapy apparatus in...

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PUM

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Abstract

A radiation therapy apparatus includes a radiation irradiation unit 35, an X-ray imaging unit 36, a CT imaging device 37, a treatment planning device 38, and a controller 10. The controller 10 includes a CT image deformation amount calculation unit 11, a shape calculation unit 12, an irradiation region determining unit 13, an X-ray image deformation amount calculation unit 14, a position calculation unit 15, a template matching unit 16, a comparison unit 17, a correction unit 18, and an image processing unit 19, and by comparing the positions of a treatment target locus in respective breathing phases and the positions of the treatment target locus in corresponding ones of the respective breathing phases identified by the template matching unit 16, identifies the error values between the positions and the positions identified by the template matching unit 16 for each of parameters.

Description

technical field [0001] The present invention relates to a radiotherapy moving object tracking device, a radiotherapy irradiation area determination device, and a radiotherapy device used for radiotherapy by irradiating a treatment beam to a patient. Here, the moving object tracking device refers to a device that tracks the position of a moving object by tracking a moving object that is a moving object that moves with the patient's breathing or the like, or an object. Background technique [0002] In radiation therapy in which radiation such as X-rays and electron beams is irradiated to an affected part such as a tumor, it is necessary to accurately irradiate the affected part with radiation. However, sometimes the affected part moves as the patient breathes. For example, tumors near the lungs move considerably due to breathing. Therefore, a radiotherapy apparatus has been proposed in which a metal marker is placed near a tumor, and the position of the marker is detected by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N5/10
CPCA61N5/1037A61B6/032A61N5/1039A61N5/1049A61N5/1077A61N2005/1061
Inventor 森慎一郎山岸義行鸟越唯
Owner NAT INST FOR QUANTUM & RADIOLOGICAL SCI & TECH
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