A Systematic Matrix Generation and Processing Method for Accelerated Positron Image Reconstruction
A system matrix and image reconstruction technology, which is applied in computerized tomography scanners, instruments for radiological diagnosis, medical science, etc., can solve problems such as detection occasions that cannot meet real-time requirements, time-consuming, slow image reconstruction process, etc.
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[0039] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0040] Image reconstruction is the process of reconstructing a tomographic image through a sinogram to form a slice map. The system matrix is used as a bridge to reconstruct the sinogram into a slice map, and records the quantized length of each response line passing through each pixel to reflect the positron in the slice map. Annihilation occurs on each pixel of , yielding a probability distribution of different response lines. For the convenience of illustration, assume a miniature positron detection device, such as figure 1 As shown, a 4×4 slice image is detected in the field of view in the miniature positron detection ring, and one pair of detectors AA' of the detection device receives coincident data, that is, the data of the response line of AA', which is determined by According to the princip...
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