Front collimator suitable for low-dose radiation of CT equipment and CT equipment

Abstract

The invention provides a front collimator suitable for low-dose radiation of CT equipment and the CT equipment, and relates to the technical field of medical equipment. The CT equipment comprises an X-ray tube, the front collimator, an inverter, a high voltage generator, a detector data acquisition system, a linear power supply assembly, a heat exchanger, a counterweight device, a fixed counterweight assembly and a rotating substrate; the front collimator comprises an X-ray collimator frame, an X-ray filtering device, an X-ray filtering driving device, an X-ray collimation device, an X-ray collimation driving device and an X-ray shielding device; and the front collimator is located below the X-ray tube and adopts integrated design, an X-ray tube filtering device and the X-ray collimation device are located in the X-ray collimator frame at the same time, and all assemblies of the front collimator are convenient to install, detach and maintain. According to the invention, collimation andshielding of X-rays can be achieved, the low leakage rate of the X-rays is ensured, and the body health of medical staff is protected.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a front collimator suitable for low-dose radiation of CT equipment and CT equipment. Background technique [0002] The front collimator assembly of CT equipment plays a key role in the CT equipment. The front collimator includes a filter device made of absorbing material for weakening and changing the spectral composition of X-ray radiation and an X-ray collimation device. Different slits are designed on the front collimator. By changing the size of the slits, the scanning layer thickness of the CT equipment can be controlled; at the same time, it can shield the X-rays outside the scanning field of view of the CT equipment to prevent invalid X-rays. X-rays and stray X-rays are detected by the detector system, causing troubles for subsequent data processing, but the collimation accuracy of X-rays in the prior art is not high, the shielding effect is not good, and there i...

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Problems solved by technology

[0002] The front collimator assembly of CT equipment plays a key role in the CT equipment. The front collimator includes a filter device made of absorbing material for weakening and changing the spectral composition of X-ray radiation and an X-ray collimation device. Different slits are designed on the front collimator. By changing the size of the slits, the scanning layer thickness of the CT equipment can be controlled; at the same time, it can shield the X-rays outside the scanning field of view of the CT equipment to prevent invalid X-rays. X-rays and stray X-rays are detected by the detector system, causing troubles for subsequent data processing, but the collimation accuracy of X-rays in the prior art is not high, the shielding effect is not good, and there is X-ray leakage, which increases the patient's time in the hospital. Radiation dose when receiving CT

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