CT system special for breast examination and method for scanning breasts by using CT system

Abstract

The invention provides a CT scanning system special for breast examination, which comprises a shell (3) and a CT frame (2) capable of performing linear motion relative to the shell (3) along a specific direction, and the CT frame (2) can realize exposure scanning in a circumferential static mode or a rotating mode; correspondingly, the shell (3) is provided with a hole-shaped structure penetratingthrough the ray plane, and at least one end of the hole-shaped structure is provided with an opening matched with the breast of a human body in shape and size. The CT scanning system special for breast examination can achieve high-quality three-dimensional imaging of human breasts. Correspondingly, the invention further provides a method for scanning the human breasts by using the CT scanning system, and the method is high in scanning speed and efficiency while high-quality three-dimensional imaging of the human breasts is achieved.

Description

technical field [0001] The invention relates to computerized tomography technology, in particular to a CT system specially used for breast examination and a method for scanning breasts with the CT system. Background technique [0002] Breast disease, especially breast cancer, is a disease that plagues many women. The key to the treatment of breast cancer lies in early and accurate diagnosis. It is generally recognized that breast cancer detected at an early stage can be permanently cured. Most scholars believe that if early breast cancer is seen according to the preoperative findings: the tumor should be less than 2cm, no metastatic lymph nodes in the armpit, and no distant metastasis; including non-invasive cancer, it can be seen that the key to early detection is in the tumor (including early calcifications, etc.) ) is identified by detection when it is relatively small. [0003] Currently, the early screening method for breast cancer is mammography. However, since mamm...

AI Technical Summary

Problems solved by technology

Although breast ultrasonography has the advantages of being economical, simple and non-radioactive, it is difficult to distinguish many tiny calcifications

Although breast magnetic resonance has a strong ability to detect lesions, it can find small lesions and differentiate benign and malignant tumors, but breast magnetic resonance equipment is expensive, the inspection cost is high, and the inspection time is long, and it is not suitable for patients after cardiac pacemaker implantation. patients; more importantly, injection of contrast media is required, which is not suitable for universal screening

[0006] Clinically, some doctors also use ordinary CT to scan breasts. The problem with this method is that the current CT scan scans the entire breast tissue, not just the breast itself, so the radiation dose required is relatively large; and the resolution of ordinary CT The rate is often at 0.5mm, which is not high enough in resolution

Another problem with cone-beam CT is that its scanning speed is low, usually 10 seconds or even more than 20 seconds. Since the chest is affected by breathing, it will cause motion artifacts when the scanning speed is relatively slow.

Moreover, due to the influence of the structure, the open cone-beam CT cannot achieve 100% X-ray shielding

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