Zobrazeno 1 - 10
of 24
pro vyhledávání: '"David Leo McDaniel"'
Autor:
David Leo McDaniel, Changlyong Kim
Publikováno v:
2017 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC).
A 511keV gamma ray interacts with scintillation crystals by photoelectric interaction or Compton scattering. In photoelectric interaction, it deposits all 511keV energy at the first interaction location. In Compton scatter, it can place its energy wi
Publikováno v:
IEEE Transactions on Nuclear Science. 61:121-125
In PET detector designs, the scintillator material can be partitioned such that a block of crystals share timing/energy readout electronics. A fraction of the incident 511 keY photons produce simultaneous events in two adjacent block readouts due to
Publikováno v:
2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD).
The effect of crystal surface finish on the performance of radiation detector has been studied many times mostly focused on a single isolated crystal coupled to a single photosensor. In this paper, we studied roughen crystal effect on light sharing c
Publikováno v:
IEEE Transactions on Nuclear Science. 58:3-8
Geiger-mode multi-pixel APD is being recognized as the best alternative solid-state photo-sensor to vacuum PMT for various specific applications. Especially, its magnetic field immunity and high gain made it popular in MR/PET detector research. In th
Autor:
Charles W. Stearns, John L. Humm, Luc Bidaut, Howard Amols, Assen S. Kirov, A. Ganin, Sadek Nehmeh, Yusuf E. Erdi, David Leo McDaniel, Klaus A. Hamacher, C. Ross Schmidtlein
Publikováno v:
Medical Physics. 33:198-208
The recently developed GATE (GEANT4 application for tomographic emission) Monte Carlo package, designed to simulate positron emission tomography (PET) and single photon emission computed tomography (SPECT) scanners, provides the ability to model and
Publikováno v:
IEEE Transactions on Nuclear Science. 51:2681-2687
Orbiting rod source coincidence acquisitions may exhibit a significant amount of dead-time, depending on the system geometry and the rod source activity. This dead-time is a function of the relative location between the rod source and the crystals in
Autor:
Ronald Grazioso, Adrian Ivan, K. S. Shah, Chang Lyong Kim, Richard Farrell, Scott Stephen Zelakiewicz, David Leo McDaniel, Kent C. Burr, Jaroslaw Glodo, James Walter Leblanc, Alexander Ganin
Publikováno v:
IEEE Transactions on Nuclear Science. 50:792-796
A gamma ray detector for PET, consisting of an array of mixed lutetium oxyorthosilicate (MLS) scintillator crystals coupled to a position sensitive avalanche photodiode (PSAPD), was evaluated. The scintillator array was constructed from individual ML
Publikováno v:
2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC).
The paper presents design and performance of a Data Acquisition System for PET Scanner. This System uses dual integration time to determine energy deposited in an 8×8 array of BGO crystals. Measurements and Monte-Carlo studies shows that our approac
Publikováno v:
2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC).
The goal of the work was to understand the impact on clinical measures of timing resolution for time-of-flight (TOF) fully-3D iterative reconstruction. We compared TOF impact to that from use of a PET detector response model. Sixteen FDG-avid feature
Autor:
Vi Hoa Tran, David Leo McDaniel, Jianjun Guo, Gary McBroom, Changlyong Kim, Ashwin A. Wagadarikar, Albert Taesung Byun, Sergei Ivanovich Dolinsky, Adrian Ivan, Geng Fu, James Lindgren Malaney, Alexander Ganin, W. K. Peterson
Publikováno v:
2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC).
Silicon photomultiplier technology based on Geigermode avalanche in p-n junction has made unforeseen progress for the last 5-6 years. With its high gain and high photon detection efficiency, it has shown that it could replace PMTs in many application