Calibration of a PEM detector with depth of interactionmeasurement

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We present an in situ calibration technique for the LBNL positron emission mammography (PEM) detector module that is capable of measuring depth of interaction (DOI). The detector module consists of 64LSO crystals coupled on one end to a single photomultiplier tube (PMT) and on the opposite end to a 64 pixel array of silicon photodiodes (PD). The PMT provides an accurate timing pulse, the PDs identify the crystal of interaction, the sum provides a total energy signal and the /splGamma/=PD/(PD+PMT) ratio determines the depth of interaction. We calibrate using the /sup 176/Lu natural background radiation of the LSO crystals. We ... continued below

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Wang, G.-C.; Huber, J.S.; Moses, W.W.; Choong, W.-S. & Maltz, J.S. June 3, 2004.

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We present an in situ calibration technique for the LBNL positron emission mammography (PEM) detector module that is capable of measuring depth of interaction (DOI). The detector module consists of 64LSO crystals coupled on one end to a single photomultiplier tube (PMT) and on the opposite end to a 64 pixel array of silicon photodiodes (PD). The PMT provides an accurate timing pulse, the PDs identify the crystal of interaction, the sum provides a total energy signal and the /splGamma/=PD/(PD+PMT) ratio determines the depth of interaction. We calibrate using the /sup 176/Lu natural background radiation of the LSO crystals. We determine the relative gain (K) of the PMT and PD by minimizing the asymmetry of the /spl Gamma/ distribution. We determine the depth dependence from the width of the /spl Gamma/ distribution with optimal K. The performance of calibrated detector modules is evaluated by averaging results from 12 modules. The energy resolution is a function of depth ranging from 24 percent FWHM at the PD end to 51 percent FWHM at the PMT end, and the DOI resolution ranges from 6 mm FWHM at the PD end to 11 mm FWHM at the PMT end.

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  • Journal Name: IEEE Transactions on Nuclear Science; Journal Volume: 51; Journal Issue: 3; Related Information: Journal Publication Date: June 3, 2004

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  • Report No.: LBNL--52708
  • Grant Number: DE-AC02-05CH11231
  • Grant Number: NIHRO1-CA67911
  • Office of Scientific & Technical Information Report Number: 881601
  • Archival Resource Key: ark:/67531/metadc874562

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • June 3, 2004

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  • Sept. 21, 2016, 2:29 a.m.

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  • Sept. 30, 2016, 12:59 p.m.

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Wang, G.-C.; Huber, J.S.; Moses, W.W.; Choong, W.-S. & Maltz, J.S. Calibration of a PEM detector with depth of interactionmeasurement, article, June 3, 2004; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc874562/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.