4 results about "Delivered radiation dose" patented technology

[Problem] To provide a radiotherapy planning assistance system that can efficiently achieve a dose distribution for a radiotherapy device that is close to the established ideal dose distribution, and that can stabilize the quality of a treatment plan by ensuring that the achieved dose distribution does not vary greatly even when different types of radiation therapy devices are used. [Solution] A radiotherapy planning assistance system comprising: a dose distribution storage unit 21b that stores an ideal radiation dose distribution established on the basis of information about the location and cross-sectional contour of an affected area to be irradiated with radiation; a region-generating processing unit 20c that divides the cross-section into two or more regions for each prescribed dose range on the basis of dose distribution information; and a dose parameter setting unit 30a that, for each region, associates prescribed parameter values ​​for radiation doses suitable for achieving the dose distribution with the radiotherapy device to be used.

This invention relates to the field of interventional tumor therapy technology and discloses a real-time optimization method for interventional radiotherapy planning. The method includes: dimensionality reduction processing of preoperative three-dimensional angiography images to generate an initial three-dimensional spatial radiation dose distribution matrix; acquisition of in-situ physical and electrophysiological physical quantities corresponding to the injection phase, outputting multimodal synchronous temporal features; analysis of the multimodal synchronous temporal features based on feature decoupling and cross-tissue dielectric cross-validation logic to exclude vasospasm and arteriovenous shunt states, and calculation of dynamic flow resistance increments; reconstruction of blood flow distribution ratios based on dynamic flow resistance increments, accumulating to generate a real-time cumulative radiation dose distribution matrix; monitoring the real-time cumulative radiation dose distribution matrix and catheter reflux pressure gradient, sending a low-level command when a threshold is reached to stop the operation of the radiation-proof high-pressure injection pump. This invention solves the problem of deviation between actual radiation dose distribution and static plan, preventing excessive radiation in non-target areas and microsphere reflux.

The application provides an image processing method, a readable storage medium and medical equipment, and the image processing method comprises the following steps: acquiring a first image; inputting the first image into a preset generative adversarial network, so that the preset generative adversarial network processes the first image to obtain a second image, and the preset generative adversarial network is an adversarial network which is trained based on image blocks of different sizes in sequence; and outputting the second image; wherein the first image is a computed tomography image which is photographed under a first radiation dose, the second image is a computed tomography image which is photographed under a second radiation dose, and the first radiation dose is less than the second radiation dose.

This invention discloses a method and system for personalized radiotherapy planning of subtarget areas in gliomas. The method includes: inputting the target T1C image and its corresponding AAL image into a segmentation model to obtain a brain region segmentation mask file; inputting the target T1C image into a mapping model to obtain a pseudo-MRS image; inputting the target T1C image and the registered glioma annotation file into a habitat model to obtain a habitat atlas; based on the brain region segmentation mask file, identifying whether the habitat subregion is located in a functionally critical brain region to determine whether its safe dose threshold is set to the specific tolerable dose corresponding to the functionally critical brain region; and determining the radiation dose of the glioma subregion based on the target T1C image, ASL, pseudo-MRS image, and safe dose threshold. This effectively improves the stability, repeatability, and efficiency of target delineation and achieves biological conformity of radiotherapy dose, thus providing an objective and accurate quantitative reference for developing radiotherapy plans.