Performance and quality control of Clear-PEM detector modules

Amaral, P.; Carriço, B.; Ferreira, Miguel; Moura, R.; Ortigao, Catarina; Rodrigues, Pedro; Silva, José Carlos da; Trindade, A.; Varela, J.

doi:10.1016/j.nima.2007.06.071

Cited by 17 publications

(13 citation statements)

References 7 publications

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“…The distribution is comprehended between 14% and 19%, with a mean value of 16.8% and a standard deviation of 1.5%. The results are similar to the ones obtained with the Clear-PEM crystal matrices readout by discrete electronics based on CREMAT 110 charge sensitive pre-amplifiers, in which the mean energy resolution and the standard deviation are, respectively, 15.6% and 1.3% [25].…”

Section: Energy Measurementssupporting

confidence: 83%

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Experimental characterization of the 192 channel Clear-PEM frontend ASIC coupled to a multi-pixel APD readout of LYSO:Ce crystals

Albuquerque¹,

Bexiga²,

Bugalho³

et al. 2009

Nuclear Instruments and Methods in Physics Research Section A:

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Section: Energy Measurementssupporting

confidence: 83%

“…The asymmetry variation per millimeter is therefore of about 6% mm À1 . This result indicates that the performance of the frontend system is adequate for DOI measurements, since an asymmetry per unit length higher than 4% mm À1 are compatible with a DOI resolution of 2.2 mm FWHM or better [25].…”

Section: Article In Pressmentioning

confidence: 72%

Experimental characterization of the 192 channel Clear-PEM frontend ASIC coupled to a multi-pixel APD readout of LYSO:Ce crystals

Albuquerque¹,

Bexiga²,

Bugalho³

et al. 2009

Nuclear Instruments and Methods in Physics Research Section A:

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“…This beam irradiated the crystals in different positions along its axis (Fig. 3), establishing an analytical relation between the DOl and the asymmetry [4]. The DOl resolution achieved with these tests was 2.0 mm.…”

Section: E 'Op -K E Bolmentioning

confidence: 77%

Assessment of DOI resolution in a fully mounted PEM scanner

Matela

Ferreira

Martins

et al. 2011

2011 IEEE Nuclear Science Symposium Conference Record

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The ClearPEM scanner is a dedicated system to perform breast imaging with the ability of measuring DOl, allowing an image spatial resolution close to 1.5 mm. The DOl is measured by calculating the amplitude asymmetry between the signals produced by two APD, one in the top and other in the bottom of the crystal. The DOl resolution measured in laboratory tests is 2.0 mm. In this paper we present a method to periodically confirm this value with the scanner fully mounted. The DOl resolution obtained with this method was 2.8 mm, which is consistent with the resolution measured during the laboratory tests.

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“…The reported energy resolution, for other DbPETs, ranges from 15% to 25%. 19,27,28,47 Other works measured the uniformity of small PETs (Refs. 19 and 26), however, the results are analyzed using different methods.…”

Section: Discussionmentioning

confidence: 99%

“…22,23 DbPET systems also exceed reported sensitivity and specificity of PET and PET/CT systems. 24,25 Most of the DbPET cameras commercially available, or prototypes in development, 16,19,[26][27][28] consist of two planar detectors, some of them can rotate to widen the angular coverage. A full ring detector provides better detection efficiency and solves the limitations of limited-angle tomography providing an isotropic resolution.…”

Section: Introductionmentioning

confidence: 99%