Grating phase contrast imaging signal extraction method and device, storage medium and electronic equipment

Abstract

The invention discloses a grating phase contrast imaging signal extraction method and device, a storage medium and electronic equipment, and the method comprises the steps: obtaining at least one X-ray phase stepping image, and inputting a plurality of or a single phase stepping image into a pre-trained signal extraction model; using the output result of the signal extraction model as different contrast information images corresponding to the object, and obtaining the signal extraction model by training according to the standard signal image of the sample image and the analog phase stepping image of the sample image. Therefore, the signal image of the phase stepping image can be obtained by directly inputting the phase stepping image into the signal extraction model. Particularly, by corresponding to a signal extraction process corresponding to a single phase stepping image, the method effectively solves the problem that an existing method is prone to causing reduction of image resolution, and the purpose of automatically and rapidly obtaining high-resolution phase contrast imaging is achieved.

Description

technical field [0001] Embodiments of the present invention relate to deep learning technology, and in particular to a method, device, storage medium, and electronic equipment for extracting grating phase-contrast imaging signals. Background technique [0002] X-ray grating phase contrast imaging technology is a grating imaging method based on Talbot effect and Lau effect. Through this technology, the object to be inspected can be effectively exposed to X-rays, so as to obtain the absorption signal, scattering signal and phase contrast signal inside the object. Studies have shown that phase contrast signals can effectively improve the contrast of soft tissue detection, while scattering signals can greatly improve the detection sensitivity of internal particles or void structures in objects. [0003] At present, the extraction of the above-mentioned absorption, scattering, and phase contrast signals is obtained through mathematical calculations based on multiple phase-step p...

AI Technical Summary

Problems solved by technology

However, due to the inaccuracy and time-consuming of the grating step displacement, the traditional signal extraction method cannot guarantee the displacement accuracy to obtain the ideal phase step image, and the acquisition of multiple images will consume a lot of time, which indirectly reduces the quality of the X-ray grating. Radiation Dose Utilization Efficiency of Phase Contrast Imaging Technology

In order to improve the imaging efficiency of the system and reduce the imaging time of the system, it is usually hoped to use a collected phase-stepping image for signal extraction, but the traditional method easily leads to the loss of spatial resolution

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