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- W2528424511 abstract "202 Objectives The uMI 510 PET/CT scanner is a high-resolution, high-sensitivity clinical whole body PET/CT with time-of-flight capability. The goal of the study is to evaluate the clinical and NEMA performances of the system. Methods The uMI 510 PET/CT consists of a 16 slice CT and a 96 crystal-ring PET. The PET camera comprises 432 blocks of 16x16 LYSO crystals (2.35x2.35x15 mm), and has 23.6 cm axial field of view. The PET/CT system has a 70cm diameter patient tunnel, and a 200cm co-scan range.The performance measurements were conducted according to the NEMA NU 2-2007 standard. The spatial resolution, sensitivity, scatter fraction, and count performanceof the scanner were measured. In addition, mini-Deluxe Phantom was scanned for image resolution evaluation. Results Spatial resolution (FWHM, mm) was 2.85/3.01 (Transversal/Axial, @10mm off center) and 3.07/2.97(Transversal/Axial, @100mm off center). Sensitivity (cps/kBq) was 8.3 (center) and 8.6 (@10mm off center). Scatter Fraction (SF, %) was 38.4%. And the Noise Equivalent Count Rate was 109kcps@21.5kBq/ml. For the timing resolution, the average FWHM was 485 ps. The 2.4mm rods in the mini-Deluxe phantom can be distinguished.From April 2015 to November 2015, there have been more than 1700 patient scans carried on with this system in the PLA general hospital. Among these patients, 35.4% was cancer screaming scan (with suspected malignant lesions), 34.8% was cancer screaming scan (without suspected malignant lesions), 19.9% was cancer reviewing scan, and 9.8% was neurologic scan. Conclusions The uMI 510 PET/CT system has good system performance, especially with higher spatial resolution than current commercial systems." @default.
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- W2528424511 date "2016-05-01" @default.
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- W2528424511 title "Performance Evaluation of a High-resolution TOF Clinical PET/CT" @default.
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