Method of attenuation correction of positron emission tomography and combined pet-mrt system
A technology of positron emission and attenuation correction, which is used in computed tomography scanners, instruments for radiological diagnosis, diagnosis, etc., and can solve problems such as small MRT data
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[0079] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like elements. It should be understood that the following description of the examples should not be considered limiting. The scope of the present invention is not intended to be limited by the embodiments described below or by the merely illustrative drawings.
[0080] figure 1 is a schematic diagram of the combined PET-MRT system 1 . A patient can be placed on the table 5 and positioned within the magnet 3 . Magnet 3 can apply a static (DC) magnetic field of several Teslas to align the nuclear spins. The magnet 3 may comprise a superconducting coil in liquid helium.
[0081] A PET imaging unit 8 and a PET detector 4 are provided; they are configured to acquire PET data. The PET detectors measure the coincident PET photons, and the PET imaging unit 8 provides PET data based on these measurements. The de...
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