LSO and GSO: Performance Evaluation for PET.
نویسندگان
چکیده
منابع مشابه
Performance of a GSO Brain PET Camera
A high sensitivity, high resolution brain PET scanner has been developed. The scanner comprises 58 rows of 320 4 x 4 x I O mm3 gadolinium orthosilicate (GSO) crystals, coupled to a continuous light guide that is sampled by 288 39-mm photomultiplier tubes in a hexagonal grid. A distortion removal algorithm has been developed to remove position non-linearities and to identify individual crystal r...
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A new scintillation crystal, cerium-doped lutetium oxyorthosilicate &SO) was recently discovered a, with light intensity 75 % of NaI(Tl), scintillation decay time of 12 ns (30%) and 42 ns (70%), effective Z of 66, and density of 7.4 glcc. The fast decay time and scintillation light output of LSO are superior to those of BGO for PET and the stopping power of LSO for 511 keV photons is only sligh...
متن کاملDesign and performance evaluation of spheroid geometry for brain PET scanner using Monte Carlo modeling
Introduction: There has been a curiosity about the spheroid geometry for PET scanners developments since several years ago, therefore in this study, we are aiming to evaluate the performance of this geometry and compare its performance with cylindrical geometry using Monte Carlo simulation. Methods: We simulated a spheroid geometry with a radius of 199 mm...
متن کاملOptimizing the Performance of a PET Detector using Discrete GSO Crystals on a Continuous Lightguide
.A-' 0 zn 40 6n so 100 izn 140 narrow Light Response Function (LRF) with good cryslal CllRnncl no. Figure 1: Measured elicrgy spectrum for a singlc 4 x 4 x 10 mm3 GSO crystal at 5 1 I keV. Thc trigger threshold is set at 40% of the peak value. by extending the lightguide to 2.3 cm in thickness, hut with 0.5cm slols cut in its front surface, which results in reduced tails of the LRF. The slotted...
متن کاملPerformance test of an LSO-APD detector in a 7-T MRI scanner for simultaneous PET/MRI.
UNLABELLED PET combined with CT has proven to be a valuable multimodality imaging device revealing both functional and anatomic information. Although PET/CT has become completely integrated into routine clinical application and also has been used in small-animal imaging, CT provides only limited soft-tissue contrast and, in preclinical studies, exposes the animal to a relatively high radiation ...
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ژورنال
عنوان ژورنال: RADIOISOTOPES
سال: 1997
ISSN: 1884-4111,0033-8303
DOI: 10.3769/radioisotopes.46.265