| 摘要 |
<p>A method of constructing a PET density image is also discussed in which a timing error function is convolved with an envelope function evaluated along a line of response to derive an emission event weight for use in image construction. A positron emission scanner is disclosed having a timing compensation element which uses position information originating from a spatial locator element to compensate for travel time of timing signals. The gamma ray detector comprises a scintillator layer 20 with a low pressure area 21 behind it containing a timing electrode plane 28 and a locator element wherein the timing electrode detects an electron burst generated in response to a gamma ray striking the scintillation layer. It then generates compensation timing information to compensate for the time of travel of the timing signal within the timing electrode plane.</p> |
