X-ray inspection apparatus and operation method

Abstract

The invention provides an X-ray inspection apparatus and an operation method. In the X-ray inspection apparatus, a tomographic synthetic image can be obtained with high image quality and low radiation by optimizing the rotation angle of the tomographic synthetic photography. A processing section of the X-ray inspection apparatus determines photographing targets, i.e., positions of a tumor (804) and a guide sheath (803), calculates an optimal rotation angle (801) of an X-ray beam capable of separating both and preventing the tumor (804) and bones (806) from overlapping, acquires an image while an X-ray source and a detector are moved in the calculated rotation angle range, and reconstructs the resulting image to obtain a tomographic synthetic image.

Description

technical field [0001] The invention relates to a photography technique of an X-ray inspection device, in particular to a tomosynthesis photography technique. Background technique [0002] As a method of non-destructively visualizing the inside of a subject for medical diagnosis and defect inspection of industrial products, there is an X-ray inspection method in which a subject is irradiated with X-rays and the transmitted X-rays are detected. In addition, there is an X-ray CT (Computed Tomography: computerized tomography) inspection method in which, in order to three-dimensionally understand the inside of a subject, the subject is irradiated with X-rays while rotating and the transmitted X-rays are detected. A reconstruction calculation process is performed to obtain a cross-sectional image. Among the CT examination methods, there are fan-beam CT imaging, cone-beam CT imaging, tomosynthesis using transmitted X-ray information at a limited rotation angle, and tomographic X-...

AI Technical Summary

Problems solved by technology

In this tomosynthesis imaging, the angle of image acquisition is limited compared with CT imaging, and cross-sectional images can be obtained with low radiation. However, compared with X-ray fluoroscopy, the amount of radiation increases according to the rotation angle of the acquired image.

In the case of Patent Document 1, since the target is breast cancer, the position of the puncture needle and the like are roughly fixed, for example, forceps are inserted at the position of the bronchi near the tumor to be accurately identified by bronchial endoscopic biopsy. Under the circumstances, it is difficult to reduce the radiation dose

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