Dedicated breast phantom of CT equipment for breast

Abstract

The invention discloses a dedicated breast phantom of CT equipment for breast. The breast phantom comprises an elliptic breast body, a plurality of detector accommodating holes, thermoluminesence detectors, a fixing pin (1) and a fixing pin (2), wherein the elliptic breast body is divided into two elliptic half-balls through an elliptic central plane; the detector accommodating holes are all embedded in either elliptic half-ball; the other elliptic half-ball is used for assisting the formation of breast shape of the breast phantom; the detector accommodating holes are round or small cylinder-shaped; the thermoluminesence detectors are put in the detector accommodating holes and used for data measurement; the four corners of the fixing pin (1) are round; and the air flows out through slits at the four corners to achieve the fixing and buffering functions when the two elliptic half-balls are closed. The dedicated breast phantom can be applied to measure and calibrate the dose of radiation to the breast as well as the dose distribution, is more favorable to control and evaluate the dose level of radiation to the breast, and helps improve breast diagnosis techniques.

Description

technical field

[0001] The invention relates to the technical field of X-ray tomography CT, in particular to a mammary phantom for mammary gland CT equipment. 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 molybdenum imaging (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. Therefore, bre...

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