Radiotherapy with superposition-free 3D computerized tomography imaging
A radiotherapy, non-overlapping technique, used in radiotherapy, therapy, instruments for radiological diagnosis, etc., can solve problems such as deviation from the radiation plan, and achieve the effect of small technical overhead
Active Publication Date: 2013-02-06
SIEMENS HEALTHCARE GMBH
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As a result, the exposure deviates from the previously determined radiation plan
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[0042] figure 1 A radiotherapy apparatus 11 with an o-gantry 13 is shown.
[0043] The gantry 13 has a central opening 13 in which a patient 17 on a patient couch 19 is positioned for irradiation.
[0044] Located on the gantry ring is a rotating device 21 , by means of which a therapeutic radiation source 23 can be rotated around the patient 17 . The radiation of the therapeutic radiation source is collimated by means of a multi-leaf collimator, whereby the radiation field is limited to two dimensions. Accordingly, the multi-leaf collimator is different from the one-dimensional binary collimator ( Kollimator), the binary collimator only allows the illumination field to vary in one dimension.
[0045] Likewise connected to the rotary device 21 and integrated in the radiotherapy system 11 are a CT-X radiation source 25 and a CT detector 27 , by means of which raw image data can be recorded for three-dimensional computed tomography without overlapping.
[0046] The CT detec...
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The invention relates to a radiotherapy apparatus, comprising: a therapeutic radiation source; a image capturing apparatus used for computerized tomography 3D image data sets, containing the radiation sources and an oppositely positioned radiation detector used for recording original image data for the superposition-free computerized tomography 3D image data sets; a reconstruction apparatus used for reconstructing the superposition-free computerized tomography 3D image data sets from the original image data; and a control device for the coordinated control of an irradiation with the therapeutic radiation source, and a recording and reconstruction of the superposition-free computerized tomography 3D image data sets by using the image capturing apparatus and the reconstruction apparatus. The invention further relates to a method for image data recording during a radiotherapy session, comprising the following steps: recording of raw image data for the superposition-free computerized tomography 3D image data sets, and reconstructing the superposition-free computerized tomography 3D image data sets from the raw image before the irradiation is completed.
Description
technical field [0001] The invention relates to a radiotherapy system with a computed tomography imaging device and to a method for recording image data during radiotherapy. Background technique [0002] Radiation therapy is a mainstream method in which ionizing radiation is used for the treatment of pathological tissue, such as tumor tissue. The goal of radiation therapy is to deliver a sufficient therapeutic dose to the tissue to be treated without damaging healthy surrounding tissue. Furthermore, the therapeutic effect is dependent on the fact that ionizing radiation acts differently on healthy and pathological tissue. [0003] When irradiating a patient with radiation therapy equipment, the site to be irradiated moves due to intentional and unintentional patient movements (eg breathing, gastrointestinal motility). As a result, the irradiation deviates from the previously determined radiation plan. [0004] US6778850 describes the implementation of radiotherapy in whic...
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IPC IPC(8): A61B6/03
CPCA61N5/00A61B6/486A61B6/032A61B19/00A61B6/5264A61N5/10A61B5/08A61B6/03A61B6/5288A61B6/5205A61N5/1067A61N2005/1061
Inventor T.弗洛尔M.格拉斯鲁克
Owner SIEMENS HEALTHCARE GMBH