Mammary gland die body with chest wall radiation dose measurement function

Abstract

The invention discloses a mammary gland die body of CT (computed tomography) equipment special for mammary gland. The mammary gland die body comprises an elliptic mammary body, a chest wall, a plurality of detector placing holes, thermoluminescent detectors and a fixing bolt, wherein the elliptic mammary body is divided into two parts, namely two elliptic hemispheres, by an elliptic central plane; each of the elliptic hemispheres comprises two parts, namely a mammary gland region and a chest wall region; the detector placing holes are all embedded into the mammary gland region and the chest wall region in one of the elliptic hemispheres; the other elliptic hemisphere is used for helping the mammary gland die body form a mammary gland shape; the detector placing holes are shaped like a round hole or a small cylinder; the thermoluminescent detectors are placed into the detector placing holes for data measurement; and the fixing bolt is used for fixing and buffering the elliptic hemispheres when the elliptic hemispheres are combined. The special mammary gland die body can be used for measuring and calibrating radiation dose and dose distribution in the mammary gland and the chest over the mammary gland, is beneficial to controlling and estimating the radiation dose level of the mammary gland and the surrounding tissues and organs, particularly the tissues and organs in the chest, so that the mammary gland diagnosis technology is improved, and the risk level of secondary cancerogenesis due to the radiation can be reduced.

Description

technical field [0001] The invention relates to the technical field of X-ray tomography CT, in particular to a mammary gland phantom with chest wall radiation dose measurement. Background technique [0002] At present, the incidence of breast cancer ranks first among female malignant tumors. Among the various existing breast examination methods, X-ray mammography (Mammography) is the most widely used method. However, mammography is a two-dimensional DR image, and the tissue information in the imaging direction is superimposed on each other. The accuracy of stereotaxic positioning is poor, and false positives and misdiagnosis are prone to occur for dense breasts. Therefore, whole-body CT is also used clinically for breast examination. However, the whole-body CT equipment can only scan the human body in the transverse axis and cannot scan the breast alone, so that other body tissues except the breast receive unnecessary X-ray radiation and the image quality is also poor. The...

AI Technical Summary

Problems solved by technology

Once the mammary gland is in an unnatural state, it will lose its normal anatomical structure, which is not conducive to the early diagnosis and location of the disease, and has a greater impact on the examination results

[0004] In the existing technical solutions, there is no breast phantom dedicated to breast CT equipment to measure and calibrate the dose and dose distribution received by the breast, which is not conducive to the diagnosis of breast CT; The opening of the opening will cause some rays to leak. Therefore, in addition to evaluating the dose received by the breast, the breast phantom also needs to evaluate the dose received by the tissues and organs around the breast, especially the upper chest wall. Dose assessment, so as to reduce the resulting radiation damage and do a good job in corresponding radiation protection

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