Comparative study of two flat-panel x-ray detectors applied to small-animal imaging cone-beam micro-CT

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Show simple item record Sisniega, Alejandro Vaquero López, Juan José Carlos, Álvaro de Villena, José L. Abella García, Mónica Vidal Migallón, I. Tapias, Gustavo Antoranz, J. Carlos Desco Menéndez, Manuel Lage Negro, Eduardo 2011-09-30T11:26:38Z 2011-09-30T11:26:38Z 2008-10
dc.identifier.bibliographicCitation 2008 IEEE Nuclear Science Symposium Conference Record, Oct. 2008, p. 3836-3840
dc.identifier.isbn 978-1-4244-2714-7
dc.identifier.issn 1082-3654
dc.description Proceeding of: 2008 IEEE Nuclear Science Symposium Conference Record (NSS '08), Dresden, Germany, 19-25 Oct. 2008
dc.description.abstract This work compares two different X-ray flat-panel detectors for its use in high-speed, cone-beam CT applied to small-animal imaging. The main differences between these two devices are the scintillators and the achievable frame rate. Both devices have been tested in terms of system linearity, sensitivity, resolution, stability and noise properties, taking into account the different timing schemes for each one of them and the mandatory corrections on the raw data. Tomographic scans have been carried out using both detectors to evaluate its final performance as well as the delivered dose needed to achieve similar quality scans. An experimental cone-beam CT test-bench has been designed and implemented to perform the different measurements. It uses a micro-focus X-ray source and a rotating stage where the samples are placed. A modified FDK algorithm has been used to reconstruct the acquired data. Both detectors show similar results for pixel linearity and stability measurements, and their noise levels are comparable. The resolution and sensitivity features are better for the direct grown scintillator detector (9 Ipmm vs. 6 Ipmm, and -4 times more sensitive for similar delivered dose). Since tomographic reconstructed images for the higher frame-rate detector show acceptable quality, it can be used to implement a faster system for high-speed acquisition techniques like, for example, dynamic imaging or gated protocols.
dc.description.sponsorship This work is partially funded by the CD-TEAM Project, CENIT Program, Spanish Ministerio de Industria, and with grants from the Ministerio de Educacion y Ciencia, projects TEC2007-64731 and TEC2008-06715-C02Ol.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher IEEE
dc.rights © IEEE
dc.title Comparative study of two flat-panel x-ray detectors applied to small-animal imaging cone-beam micro-CT
dc.type bookPart
dc.type conferenceObject
dc.subject.eciencia Biología y Biomedicina
dc.identifier.doi 10.1109/NSSMIC.2008.4774118
dc.rights.accessRights openAccess
dc.relation.eventdate October 19-25, 2008
dc.relation.eventplace Dresden, Germany
dc.relation.eventtitle 2008 IEEE Nuclear Science Symposium Conference Record (NSS '08)
dc.relation.eventtype proceeding
dc.identifier.publicationfirstpage 3836
dc.identifier.publicationlastpage 3840
dc.identifier.publicationtitle 2008 IEEE Nuclear Science Symposium Conference Record
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