Title :
A Dual-Ended Readout Detector Using a Meantime Method for SiPM TOF-DOI PET
Author :
Han Gyu Kang ; Guen Bae Ko ; June Tak Rhee ; Kyeong Min Kim ; Jae Sung Lee ; Seong Jong Hong
Author_Institution :
Dept. of Senior Healthcare, Eulji Univ., Daejeon, South Korea
Abstract :
We have investigated a dual-ended readout detector based on two silicon photo-multipliers (SiPMs) using a 30 mm long cerium-doped lutetium-yttrium oxyorthosilicate ( Lu0.5Y1.4Si0.5:Ce, LYSO) crystal to study the feasibility of a time-of-flight (TOF) and depth-of-interaction (DOI) positron emission tomography (PET). To improve the timing resolution in the dual-ended readout detector, a novel meantime measurement was employed. The meantime was obtained by averaging two signal arrival times at two SiPMs, each of which was attached to both ends of the LYSO crystal. The meantime method minimizes the arrival time difference along the crystal. Both timing and DOI resolutions using the meantime method were better than those of a single-ended readout detector.
Keywords :
biomedical equipment; cerium; lutetium compounds; photomultipliers; positron emission tomography; silicon; yttrium compounds; DO! resolutions; LYSO crystal; Lu0.5Y1.4Si0.5:Ce; Si; SiPM TOF-DOI PET; arrival time difference; cerium-doped lutetium-yttrium oxyorthosilicate crystal; dual-ended readout detector; meantime measurement; meantime method; silicon photomultipliers; single-ended readout detector; size 30 mm; time-of-flight-depth-of-interaction positron emission tomography; Crystals; Detectors; Energy resolution; Photonics; Positron emission tomography; Signal resolution; Timing; Depth of interaction (DOI); dual-ended readout; meantime method; positron emission tomography (PET); silicon photomultipler (SiPM); time-of-flight (TOF);
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2015.2449891
