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CT imaging and image guiding radiotherapy device

A technology of radiotherapy and CT imaging, which is applied in the field of medical imaging and radiotherapy guidance, can solve the problems of high radiation dose, poor practicability, and low contrast of megavolt CT, and achieve a universally applicable effect

Active Publication Date: 2020-04-28
TSINGHUA UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as mentioned earlier, megavolt CT has a large radiation dose and low contrast, so it is not practical

Method used

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  • CT imaging and image guiding radiotherapy device

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Embodiment Construction

[0045]In the prior art, when the image-guided radiation therapy device realizes PET (Positron Emission Tomography) imaging and KVCT imaging functions, it is difficult to make the first PET detector, the second PET detector, the high-energy detector, the high-energy ray source and the KVCT imaging function simultaneously. The ray source is placed on the same plane. In view of this, the present invention provides a CT (computed tomography) imaging and image-guided radiotherapy device, which increases the KV coplanar with the first PET detector, the second PET detector, the high-energy detector and the high-energy ray source The ray source can realize the co-detector function of the first PET detector or the second PET detector, so as to achieve the purpose of co-scanning plane for KVCT imaging, PET imaging and radiotherapy.

[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further ...

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Abstract

A CT imaging and image guiding radiotherapy device comprises: at least one high-energy ray source used for generating high-energy rays and carrying out radiotherapy on an object; a first PET detectorand a second PET detector which are oppositely arranged; and at least one kilovolt KV ray source for medical diagnosis, arranged on the first PET detector, the inner side of the first PET detector orthe outer side of the first PET detector and used for generating KV rays, wherein the second PET detector receives the KV rays and carries out CT imaging, and the first PET detector and the second PETdetector receive gamma photons emitted by the object and carry out PET imaging. The co-detector function of the two PET detectors is achieved through the KV ray source, and radiotherapy is assisted and / or guided according to KVCT imaging and / or PET imaging, so the purpose that radiotherapy, KVCT imaging and PET imaging share the same scanning plane in the image-guided radiotherapy device is achieved.

Description

technical field [0001] The invention relates to the fields of medical imaging and radiotherapy guidance, in particular to a computerized tomography (CT) and image-guided radiotherapy device. Background technique [0002] Radiation therapy (Radiation Therapy) is currently one of the main ways to treat malignant tumors. In radiation therapy, image guidance (Image Guidance) is one of the key means to ensure high-precision treatment. Radiation therapy guidance is essentially the use of medical imaging to obtain accurate body position information of the patient before or during treatment, reducing the treatment errors caused by the patient's body placement, heartbeat, breathing and other organ movements, thereby improving or ensuring radiation therapy. the accuracy. Currently, the most common radiation therapy is the use of high-energy X-rays at the megavolt (MV) level, and the most common radiation therapy guidance is computed tomography (CT) based on kilovolt (KV) X-rays. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10A61B6/03
CPCA61B6/037A61B6/40A61B6/42A61B6/4429A61N5/103A61N5/1049A61N2005/1052
Inventor 高河伟张丽邢宇翔陈志强
Owner TSINGHUA UNIV