A comparative evaluation of scatter correction techniques in high-resolution detectors based on PSPMTs and scintillator arrays

Karali, E; Loudos, GK; Sakellios, N; Nikita, KS

dc.contributor.author	Karali, E	en
dc.contributor.author	Loudos, GK	en
dc.contributor.author	Sakellios, N	en
dc.contributor.author	Nikita, KS	en
dc.date.accessioned	2014-03-01T01:23:22Z
dc.date.available	2014-03-01T01:23:22Z
dc.date.issued	2006	en
dc.identifier.issn	0018-9456	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16934
dc.subject	Pixelized scintillators	en
dc.subject	Scatter correction	en
dc.subject	Scintimammography	en
dc.subject	Single photon emission computed tomography (SPECT)	en
dc.subject	Small animal imaging	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Instruments & Instrumentation	en
dc.subject.other	Pixelized scintillators	en
dc.subject.other	Scatter correction	en
dc.subject.other	Scintimammography	en
dc.subject.other	Small animal imaging	en
dc.subject.other	Image reconstruction	en
dc.subject.other	Light scattering	en
dc.subject.other	Living systems studies	en
dc.subject.other	Phosphors	en
dc.subject.other	Single photon emission computed tomography	en
dc.subject.other	Optical sensors	en
dc.title	A comparative evaluation of scatter correction techniques in high-resolution detectors based on PSPMTs and scintillator arrays	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/TIM.2006.884293	en
heal.identifier.secondary	http://dx.doi.org/10.1109/TIM.2006.884293	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	Single photon emission computed tomography images suffer from low contrast as a result of photon scatter. The standard method for excluding the scatter component in pixelized scintillators is the application of an energy window around the central photopeak channel of each crystal cell, but small angle scattered photons still appear in the photopeak window, and they are included in the reconstructed images. A number of scatter correction techniques have been proposed in order to estimate the scatter component, but they have not yet been applied in pixelized scintillators, where most groups use the standard one-photopeak window for scatter correction. In this paper, the author have assessed three subtraction techniques that use a different approach in order to calculate the scatter component and subtract it from the photopeak image: the dual energy window subtraction technique, the convolution subtraction technique, and a deconvolution technique. All these techniques are compared to the standard method. © 2006 IEEE.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Transactions on Instrumentation and Measurement	en
dc.identifier.doi	10.1109/TIM.2006.884293	en
dc.identifier.isi	ISI:000242948700007	en
dc.identifier.volume	55	en
dc.identifier.issue	6	en
dc.identifier.spage	1913	en
dc.identifier.epage	1917	en