A Composite Filter Compensation Spectrum Modulation Device

Abstract

The invention discloses a composite filter compensating spectrum modulation device, which comprises a high-density filter optimizing plate, a low-density filter compensating plate, a filter plate connecting device and an external support, wherein the high-density filter optimizing plate is respectively made of a absorption edge material with K layers of features absorption edge; the high-density filter optimizing plate and the low-density filter compensating plate are connected together by the filter plate connecting device to form a composite spectrum modulator; the low-density filter compensating plate is located at one side near an X-ray photon source; the composite spectrum modulator is supported at a specific position between the X-ray photon source and a to-be-detected breast by the external support; and the external support is fixedly arranged on a supporting plate. By adopting the composite filter compensating spectrum modulation device disclosed by the invention, on the premise that the quality of a reconstructed image is ensured by aiming at a dedicated breast computed tomography tomography (DBCT) system, dosage accepted by patients can be reduced; meanwhile, the success rate of the system of diagnosing breast diseases is remarkably improved; and spectrum distribution which is more suitable for breast imaging is provided.

Description

technical field [0001] The invention relates to the technical field of breast imaging, in particular to a compound filter compensation spectrum modulation device. Background technique [0002] At present, breast disease is the most common disease among women, and the death rate of breast cancer ranks second among female tumors. Early detection of breast cancer is an effective means to improve its cure rate. In order to reduce the diagnosis of breast biopsy, a large number of non-destructive diagnostic methods for breast diseases have been produced, mainly including: mammography mammography, ultrasound mammography, magnetic resonance (MRI) breast examination and other functional imaging methods. Among them, mammography is currently the most widely used and most effective method for early detection of breast cancer, but it superimposes three-dimensional breast structure information on a two-dimensional plane, resulting in relatively low detection sensitivity. In addition, mol...

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Problems solved by technology

However, as a new type of breast imaging equipment, the development of the spectral modulator used in the DBCT system is still in the preliminary stage. Therefore, it is necessary to design the spectral modulator for the special imaging configuration of the breast to improve the overall performance of the DBCT system. performance

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