نتایج جستجو برای: tof pet
تعداد نتایج: 65497 فیلتر نتایج به سال:
The Silicon Photomultiplier (SiPM) sensor is replacing the extensive use of Tube (PMT) in fast timing applications. These photo-sensors can be applied different fields such as medical imaging systems like Positron Emission Tomography (PET), LIDAR technologies or High Energy Physics (HEP) experiments. More specific, Time-of-Flight PET (ToF-PET) requires further developments to achieve a Coincide...
This work demonstrates how computational and physical modelling of the positron emission tomography (PET) image acquisition process for a state-of-the-art integrated PET magnetic resonance imaging (PET-MR) system can produce images comparable to manufacturer. The GE SIGNA PET/MR scanner is manufactured by General Electric has time-of-flight (TOF) capabilities about 390 ps. All software developm...
Bismuth germanate (BGO) was the preferred crystal for positron emission tomography (PET) scanners, but substituted with emergence of faster crystals. Improvements in silicon photomultipliers (SiPMs) and use fast high frequency readout make it possible to prompt Cherenkov BGO order boost achievable coincidence time resolution (CTR) significantly. The large fluctuations detected photon yield are ...
Objectives Yttrium-90 (90Y) is a beta particle nuclide used in targeted radionuclide therapy which is available to both single-photon emission computed tomography (SPECT) and time-of-flight (TOF) positron emission tomography (PET) imaging. The purpose of this study was to assess the image quality of PET and Bremsstrahlung SPECT by simulating PET and SPECT images of 90Y using Monte Carlo simulat...
UNLABELLED Results from a new PET/CT scanner using lutetium-yttrium oxyorthosilicate (LYSO) crystals for the PET component are presented. This scanner, which operates in a fully 3-dimensional mode, has a diameter of 90 cm and an axial field of view of 18 cm. It uses 4 x 4 x 22 mm(3) LYSO crystals arranged in a pixelated Anger-logic detector design. This scanner was designed to perform as a high...
Positron emission tomography (PET) [1] is currently one of the most perspective techniques in the fi eld of medical imaging. PET is based on the fact that the electron and positron annihilate and their mass is converted to energy in the form of two gamma quanta fl ying in the opposite directions. The two gamma quanta registered in coincidence defi ne a line referred to as line of response (LOR)...
University of California, San Francisco, USA An atlas-CT-based bone-anatomy compensation for MR-based attenuation correction (MRAC) in brain PET/MRI imaging is a current standard. However, the impact of an anatomical difference has not been clinically evaluated. Thus, we aim to evaluate the impact of the anatomical dissimilarity on MRAC. Whole-body FDG-PET/CT followed by PET/MRI were performed ...
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