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Radiotherapy dosage measuring device and measuring method thereof

A radiation therapy and dose measurement technology, applied in X-ray/γ-ray/particle irradiation therapy, etc., can solve the problems of restricting radiation therapy, difficulty and uncertainty, and single real-time measurement method

Active Publication Date: 2016-03-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, real-time measurement of dose distribution in patients is difficult and uncertain, and real-time measurement methods are still relatively simple and not yet "ideal", which has always been a bottleneck restricting the further development of radiation therapy

Method used

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  • Radiotherapy dosage measuring device and measuring method thereof

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] Such as figure 1 As shown, the radiotherapy dose measurement device includes a detector rotation device 1 and several EMCCD detectors 2 equipped with a wide-angle lens 3. The detector rotation device 1 and each EMCCD detector 2 pass through a multi-channel data registration collection module 4 It is connected with the computer processing unit 5; the EMCCD detectors 2 are fixed on the detector rotating device 1, and the detector rotating device 1 controls all the EMCCD detectors 2 to rotate 360° around a certain center.

[0024] The wide-angle lens 3 is a large-aperture adjustable focus wide-angle lens, and the focal length can be adjusted according to the size of the target area and organs at risk. The spectral response range of the EMCCD detector 2 should match the Cerenkov light spectrum, the peak quantum efficiency of the EMCCD detector 2 should re...

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Abstract

The invention discloses a radiotherapy dosage measuring device and a measuring method thereof, and belongs to the radiotherapy field. The radiotherapy dosage measuring device includes 3 wide-angle lenses, 3 EMCCD detectors, a detector rotation device, a multichannel data registration and collection module and a computer processing unit. Based on the Cherenkov optical intensity data generated during a multi-angle acquisition radiotherapy process, the radiotherapy dosage measuring device and the measuring method thereof can obtain Cherenkov optical intensity distribution of a tumour and the surrounding area of the tumour through optical tomography reconstruction, and can finally obtain radiotherapy dosage distribution according to the quantitative relation between the Cherenkov optical intensity and the dosage deposition. The radiotherapy dosage measuring device and the measuring method thereof have the advantages of being able to acquire three dimensional dosage distribution, being high in real time online property and being simple in measurement, and can effectively guarantee the curative effect of radiotherapy and radiation safety for a patient.

Description

technical field [0001] The invention belongs to the field of radiotherapy, and in particular relates to a device and method for real-time measuring radiation dose of radiotherapy. technical background [0002] Factors such as changes in anatomical structure during radiotherapy, inaccurate output parameters of radiotherapy equipment, and patient setup errors will cause inaccurate radiotherapy doses, which will affect the effect of radiotherapy or cause excessive exposure. The ICRU report No. 24 pointed out that a deviation of ±5% in the target dose may cause the primary tumor to go out of control or increase the probability of complications in normal organs. The real-time measurement technology of radiotherapy dose can verify the deviation between the actual administered dose and the planned dose in real time, which facilitates the timely detection of plan execution problems and modification and use for subsequent efficacy evaluation. In the true sense, real-time quality assu...

Claims

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Application Information

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IPC IPC(8): A61N5/10
Inventor 汤晓斌舒迪昀龚频耿长冉陈达
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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