Name
Title | ||
|---|---|---|
Optical Simulation And Experimental Assessment With Time-Walk Correction Of Tof-Pet Detectors With Multi-Ended Readouts |
Abstract | ||
|---|---|---|
As a commonly used solution, the multi-ended readout can measure the depth-of-interaction (DOI) for positron emission tomography (PET) detectors. In the present study, the effects of the multi-ended readout design were investigated using the leading-edge discriminator (LED) triggers on the timing performance of time-of-flight (TOF) PET detectors. At the very first, the photon transmission model of the four detectors, namely, single-ended readout, dual-ended readout, side dual-ended readout, and triple-ended readout, was established in Tracepro. The optical simulation revealed that the light output of the multi-ended readout was higher. Meanwhile, the readout circuit could be triggered earlier. Especially, in the triple-ended readout, the light output at 0.5 ns was observed to be nearly twice that of the single-ended readout after the first scintillating photon was generated. Subsequently, a reference detector was applied to test the multi-ended readout detectors that were constructed from a 6 x 6 x 25 mm(3) LYSO crystal. Each module is composed of a crystal coupled with multiple SiPMs. Accordingly, its timing performance was improved by approximately 10% after the compensation of fourth-order polynomial fitting. Finally, the compensated full-width-at-half-maximum (FWHM) coincidence timing resolutions (CTR) of the dual-ended readout, side dual-ended readout, and triple-ended readout were 216.9 ps, 231.0 ps, and 203.6 ps, respectively. |
Year | DOI | Venue |
|---|---|---|
2021 | 10.3390/s21144681 | SENSORS |
Keywords | DocType | Volume |
positron emission tomography, time of flight, coincidence timing resolution, dual-ended readout, optical simulation | Journal | 21 |
Issue | ISSN | Citations |
14 | 1424-8220 | 0 |
PageRank | References | Authors |
0.34 | 0 | 8 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Siwei Xie | 1 | 0 | 0.34 |
| Zhiliang Zhu | 2 | 0 | 0.34 |
| Xi Zhang | 3 | 10 | 3.87 |
| Qiangqiang Xie | 4 | 0 | 0.34 |
| Hongsen Yu | 5 | 0 | 0.34 |
| Yibin Zhang | 6 | 0 | 0.34 |
| Jianfeng Xu | 7 | 0 | 0.34 |
| Qiyu Peng | 8 | 0 | 0.34 |