Fast reconstruction of 3D time-of-flight PET data by axial rebinning and transverse mashing

摘要: Faster scintillators like LaBr3 and LSO have sparked renewed interest in PET scanners with time-of-flight (TOF) information. The TOF information adds another dimension to the data set compared conventional three-dimensional (3D) size of projection being multiplied by number bins. Here we show simulations analytical reconstruction that angular sampling for two-dimensional (2D) can be reduced significantly what is required 2D PET. Fully 3D data, however, a wide range oblique transverse angles. To make use smaller necessary reduce histoprojections. This done rebinning mashing these into limited Both methods are based on most likely point given measurement. It shown axial resolution loss associated reduces improved timing becomes less than 1 mm below 300 ps. amount applied without tangential increases resolution. Even quite coarse (18 angles out 324 measured 424 ps) does not image quality terms contrast or noise. advantages proposed threefold. Data storage histoprojections Compared listmode format advantage predetermined space faster reconstruction. method require normalization projections prior directly data.