| 摘要 |
Disclosed is a method for positron emission tomography and to a PET scanner. The positron emission tomography method employs the following steps: a) two photons are emitted in opposite directions by an annihilation event in the sample, b) at least two of a plurality of detectors arranged around the sample are prompted to output a signal by the two photons, c) a signal line on which the event may have taken place is determined from the location of the detectors which have output a signal, d) this signal line is evaluated in the tomographic reconstruction of the sample, wherein for each event a plurality of signal lines are determined and evaluated in the tomographic reconstruction of the sample. As described at the outset, the reconstructed image thus becomes more accurate and noise is reduced. The method and the apparatus can improve the signal-to-noise ratio of images.
|
