Title:
POSITIONING METHOD AND APPARATUS, AND RADIOTHERAPY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/132969
Kind Code:
A1
Abstract:
Provided are a positioning method and apparatus, and a radiotherapy system, wherein same relate to the technical field of radiotherapy. According to the method, second coordinates of a treatment table when a target point of an affected part coincides with a device isocenter at a Gamma angle for treatment are calculated according to first coordinates of the treatment table acquired when a pre-set X-ray taking point coincides with an imaging point, first relative positions of the imaging point and the device isocenter, second relative positions of the imaging point and a central point of a rotation axis of the Gamma angle, and third relative positions of the target point and the central point of the rotation axis of the Gamma angle at the Gamma angle for treatment, and the position of the treatment table is adjusted according to the second coordinates. Therefore, after the Gamma angle is adjusted during radiotherapy, the second coordinates of the treatment table when the target point coincides with the device isocenter at the adjusted Gamma angle can be accurately calculated, such that the precision of the alignment of the target point and the device isocenter at different Gamma angles can be improved, which can in turn improve the precision of the radiotherapy.
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Inventors:
LI JINSHENG (CN)
FU KAIQIANG (CN)
FU KAIQIANG (CN)
Application Number:
PCT/CN2018/124001
Publication Date:
July 02, 2020
Filing Date:
December 26, 2018
Export Citation:
Assignee:
OUR UNITED CORP (CN)
International Classes:
A61N5/10
Foreign References:
| CN108273199A | 2018-07-13 | |||
| CN108635681A | 2018-10-12 | |||
| CN202489969U | 2012-10-17 | |||
| US20070123815A1 | 2007-05-31 |
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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