Multi-angle self-rotation multispectral imaging device for radiation treatment

Abstract

The invention discloses a multi-angle self-rotation multispectral imaging device for radiation treatment. The multi-angle self-rotation multispectral imaging device for radiation treatment comprises detectors connected with an X-ray emission device, wherein each detector comprises a CCD packaged in a shell and used for collecting Cherenkov photons, and a filter is further arranged on each CCD. Forthe multi-angle self-rotation multispectral imaging device for radiation treatment, the four detectors perform 90-degree self-rotation for collecting images of 360 degrees, and three-dimensional doseimaging is reconstructed. The detection angle and the treatment MV level ray angle form a right angle which does not change along with the treatment angle. The multiple groups of CCDs adopt the different filters, and the multispectral imaging is more accurate than the single-spectral imaging. The hardware with the four CCDs and the filters is adopted and is placed at the four orthogonal positions, during multi-angle continuous treatment (MV level), the four detectors respectively collect two-dimensional dose images, and the mixed-spectrum Cherenkov luminescence imaging method is adopted for reconstructing the multiple groups of two-dimensional images into the three-dimensional images.

Description

Technical field [0001] The invention belongs to the technical field of radiotherapy equipment, and relates to a radiotherapy multi-angle self-rotating multi-spectral imaging device. Background technique [0002] Currently, radiotherapy has become one of the standard treatments for breast cancer after breast-conserving surgery. In order to reduce the position error of radiotherapy, image-guided radiotherapy technology has developed rapidly. [0003] In 2006, Varian Company of the United States and Elekta Company of Sweden developed a radiological imaging system. KV-X-ray tubes and a large-size amorphous silicon flat-panel detector were installed on two robotic arms respectively, which can simultaneously collect KV images and MV video. The real-time breathing tracking system developed by American Ankerui is composed of 2 cameras and amorphous silicon detectors distributed indoors, and is fused with digitally reconstructed image DRR in 2D or 3D form, thereby judging patients at a ne...

AI Technical Summary

Problems solved by technology

However, the above schemes all use X-ray radiation, causing patients to receive unnecessary doses of radiation, and it is impossible to verify the accuracy of the dose received by the tumor

[0004] In 2014, Varian Corporation of the United States and Elekta Corporation of Sweden developed a radiological imaging system whose imaging speed is on the order of minutes, while the breathing cycle of patients is on the order of milliseconds, which cannot achieve real-time imaging of breast tumors

However, due to the short launch time of C-Dose, some outstanding problems have been exposed in the application process

In the process of breast cancer treatment, the detector is placed in a fixed position around, and the detection range is limited. Especially in the multi-angle rotation treatment process, the treatment angle is many and changes quickly, and the detector is affected by the accelerator rack, so it cannot collect signals.

Similar to multi-angle rotation therapy, there are similar problems in multi-angle intensity-modulated therapy, and the above factors limit the application of CLI in complex tumor radiotherapy techniques

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