| Content Provider |
IEEE Xplore Digital Library |
| Author |
Thiessen, J.D. Jackson, C. O'Neill, K. Bishop, D. Kozlowski, P. Retiere, F. Shams, E. Stortz, G. Thompson, C.J. Goertzen, A.L. |
| Copyright Year |
2013 |
| Description |
Author affiliation: Detector Dev. Group, TRIUMF, Vancouver, BC, Canada (Bishop, D.; Retiere, F.) || Dept. of Phys. & Astron., Univ. of British Columbia, Vancouver, BC, Canada (Stortz, G.) || SensL, Cork, Ireland (Jackson, C.; O'Neill, K.) || Grad. Program of Biomed. Eng., Univ. of Manitoba, Winnipeg, MB, Canada (Shams, E.) || Dept. of Radiol., Univ. of British Columbia, Vancouver, BC, Canada (Kozlowski, P.) || Depts. of Radiol. & Phys. & Astron., Univ. of Manitoba, Winnipeg, MB, Canada (Goertzen, A.L.) || Dept. of Radiol., Univ. of Manitoba, Winnipeg, MB, Canada (Thiessen, J.D.) || Montreal Neurological Inst., McGill Univ., Montreal, QC, Canada (Thompson, C.J.) |
| Abstract |
Silicon photomultipliers (SiPMs) have high gain, excellent timing performance, and are well suited to PET/MRI applications due, in part, to their MR-compatibility and small form factor. Within the constraints of a resistor-based multiplexing circuit, it is useful to evaluate the four generations of SiPM arrays manufactured by SensL: the SPMArray4, ArraySL-4, ArraySM-4, and ArraySB-4. Breakdown voltage and dark current were measured as a function of temperature in two each of the four generations of SensL SiPM arrays. Flood histograms were created with a $^{68}Ge-irradiated$ 9×9 LYSO crystal array at temperatures of 5 °C to 45 °C in 5 °C increments and overvoltages of 2 to 4 V in 0.5 V increments. Measurements of dark current vs. bias voltage increased as temperature increased, with a corresponding increase in the breakdown voltage, $V_{b}.$ The temperature dependence of $V_{b}$ is similar between all four generations of SiPM arrays with slopes ranging from 17.0 to 23.8 mV/°C. Notably, the ArraySB-4 has lower values for the breakdown voltage, with $V_{b}$ = 24 V at 0 °C. Mean energy resolution for individual LYSO crystals showed improvements in each successive generation. The average energy resolution of the ArraySB-4 was 11.9% after correcting for non-linearity in the SiPM pixels. The linearity of the SensL SiPM arrays as a function of temperature and breakdown voltage makes them a suitable choice for a high-resolution, small animal PET/MRI system. Based on its improved resolvability and energy resolution, lower sensitivity to temperature and higher PDE, the ArraySB-4 will be used in our PET system. |
| Starting Page |
1 |
| Ending Page |
4 |
| File Size |
1712598 |
| Page Count |
4 |
| File Format |
PDF |
| e-ISBN |
9781479905348 |
| DOI |
10.1109/NSSMIC.2013.6829318 |
| Language |
English |
| Publisher |
Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date |
2013-10-27 |
| Publisher Place |
South Korea |
| Access Restriction |
Subscribed |
| Rights Holder |
Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword |
Energy resolution Temperature measurement Positron emission tomography Temperature sensors Detectors Crystals Surges hybrid PET/MRI PET silicon photomultiplier small animal PET |
| Content Type |
Text |
| Resource Type |
Article |
