2005
DOI: 10.1109/tmi.2005.852072
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A method for determination of the timing stability of PET scanners

Abstract: Abstract-We report on the timing resolution and stability of the MicroPET R4 PET scanner. Its detectors have energy resolutions in the range of 25% and previously reported timing resolutions 3.2 ns. Our preliminary evaluation of this instrument showed that artefact-free normalization sinograms could only be obtained with a timing window of 10 ns or more in spite of a timing resolution of 3.2 ns. This instrument uses high-speed electronics albeit with 2-ns timing clock. We performed sham transmission scans with… Show more

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Cited by 11 publications
(9 citation statements)
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“…Clock skew and jitter figures are rarely documented [9], although they can occasionally be inferred [10]. Sometimes, a combined systemwide skew and jitter figure is given [11], [12]. Usual values range from 150 to 500 ps, being higher for larger or physically distributed systems, such as Fig.…”
Section: Introductionmentioning
confidence: 99%
“…Clock skew and jitter figures are rarely documented [9], although they can occasionally be inferred [10]. Sometimes, a combined systemwide skew and jitter figure is given [11], [12]. Usual values range from 150 to 500 ps, being higher for larger or physically distributed systems, such as Fig.…”
Section: Introductionmentioning
confidence: 99%
“…(2) The most simple and direct approximation of comes from computing and truncating the inverse Fourier transform of the ideal frequency response (2), which is a shifted and sampled version of the sinc function, as shown in (3). (3) In order to produce realizable fractional delay filters, some windowed finite length approximation has to be used.…”
Section: B Constant Fraction Discriminatormentioning
confidence: 99%
“…However, assigning a time stamp to the scintillation pulse is not a trivial task, because the pulse start point is ill-defined and also due to practical problems derived from the time scale being handled. Moreover, the system may require periodic calibrations in order to provide optimal performance [2].…”
Section: Introductionmentioning
confidence: 99%
“…Assigning a time stamp to the scintillation pulse is not a trivial task due to the time scale being handled and for an optimal performance the system may require periodic calibrations [2]. The classical approach to time discrimination relies on an mixed-signal application specific integrated circuit (ASIC) device designed to yield nanosecond timing accuracy [3][4][5].…”
Section: Introductionmentioning
confidence: 99%