Fast iterative reconstruction method of high-resolution heat source image in positive-electron tomographic scanning
A technology of positron tomography and iterative reconstruction, applied in computed tomography scanners, echo tomography, etc., can solve problems such as unreasonable pixels and low count values
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[0025]The heat source high-resolution fast image iterative reconstruction method (HHSR) in the positron tomography technique (PET) of the present invention is based on the usual OSEM method, and the method of the present invention introduces the super-relaxation factor and the upper and lower limit variable constraints simultaneously to obtain improvement Type OSEM, thereby solving the technical problem proposed by the present invention.
[0026] The flow chart of the heat source high-resolution fast image iterative reconstruction method (HHSR) in the positron emission tomography (PET) technique according to the present invention will be described in detail below.
[0027] refer to figure 2 Firstly, in step S1, PET is used to collect the gamma photon projection signals of patients who have been injected with radioisotope drugs in vitro, and the signals are modulated, amplified, AD converted, corrected, etc. by subsequent electronic devices, and are carried out according to ce...
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