An Evaluation of Semiconductor Detectors for Positron Tomography

Kaufman, Léon; Williams, Stephen; Hosier, K.; Ewins, J.H.

doi:10.1109/tns.1979.4329702

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A High-resolution Detector Module1

Sensitivity Shielding Aperture and Scatter Rejection1

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1987

1993

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Cited by 7 publications

(2 citation statements)

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“…As determined by Monte Carlo calculation, 16% of the photons reach the photodetector (27). 6 Another potential candidate for this detector is a heavy element semiconductor with a 2-dimensional position sensitive readout (similar to the germanium gamma camera). If the electrons and holes have different drift velocity, the 3td coordinate can be determined by measuring the pulse shape.…”

Section: A High-resolution Detector Modulementioning

confidence: 99%

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Potential Improvements in Instrumentation for PET

Derenzo

1987

Physics and Engineering of Medical Imaging

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This paper discusses the potential for improved detectors in Positron Emission Tomography (PET) and explores the ultimate limits that might be achieved in the areas of spatial resolution, sensitivity, and maximum imaging rates. It is shown that if an ultra-fast, high· efficiency scintillator and a thin, low-noise, positionsensitive photodetector were available, a multi-layer time-of-flight tomograph would be possible with a 10 em axial field of view, a 3-dimensional spatial resolution of 2 mm fwhm,.and >700,000 prompt unscattered coincidences per sec for 1 JLCi per cm 3 in a 20 em diam cylinder of water.

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Section: A High-resolution Detector Modulementioning

confidence: 99%

“…are collinear and can contribute to the image. 6 Background due to unrelated photons detected in time coincidence by chance. cBackground due to annihilation photon pair detected in coincidence but one or both have scattered.…”

Section: Sensitivity Shielding Aperture and Scatter Rejectionmentioning

confidence: 99%