Accuray has patented a method for calibrating radiation delivery systems using a camera to capture images of radiation beams on a phantom with X-ray luminescent material. The method involves determining beam pointing offset and calibrating the radiation source position based on the image and camera position. GlobalData’s report on Accuray gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Accuray, Vaping device aerosol generators was a key innovation area identified from patents. Accuray's grant share as of May 2024 was 37%. Grant share is based on the ratio of number of grants to total number of patents.
Calibration method for radiation delivery system using camera image
A recently granted patent (Publication Number: US11998761B2) discloses a method and system for calibration in a radiation delivery system. The method involves acquiring an image of a radiation beam on a phantom using a camera, determining the camera's position based on a pattern on the phantom, and calibrating the radiation source's position in the system. Additionally, the method includes acquiring a second image post-calibration, calculating a beam pointing error, and outputting the error. The system comprises a phantom with X-ray luminescent material, a camera system to acquire images, determine beam pointing offset, and calibrate the radiation source based on the images and camera position.
Furthermore, the calibration system includes multiple cameras to capture images of the phantom and radiation beam, allowing for accurate calibration. The system accounts for sensor and lens distortion in the cameras by applying corrections to the images. It also involves determining the projected isocenter of the radiation source based on geometry and phantom position, as well as calculating centroids of the radiation beam for precise calibration. The system's innovative approach to calibration in a radiation delivery system aims to enhance accuracy and efficiency in radiation therapy procedures, ultimately benefiting patients and healthcare providers by ensuring precise radiation delivery.
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