title: Emission tomography with a large-hole collimator (CACAO): a possible new way to improve radionuclide imaging.
abstract: This work aims to improve the quality of scintigraphy. It evaluates the use of a large-hole collimator, the Computer Aided Collimation Gamma Camera Project (CACAO), in SPECT. Acquisition data from the same object were simulated for CACAO and for a conventional collimator. Better signal-to-noise ratios were found for CACAO images, whatever the number of emitted photons. This work demonstrates that high-resolution images may be obtained with large-hole collimators. The combination of CACAO and pixilated detectors may further improve radionuclide imaging.
authors.affiliation: Service de médecine nucléaire, CHU d'Angers, Hôpital Larrey, 40933 Angers, France. jeanguillaume@ieee.org
authors.forename: Christian
authors.initials: C
authors.lastname: Jeanguillaume
authors.forename: Marc
authors.initials: M
authors.lastname: Quartuccio
authors.forename: Stéphane
authors.initials: S
authors.lastname: Begot
authors.forename: Abdellah
authors.initials: A
authors.lastname: Douiri
authors.forename: Didier
authors.initials: D
authors.lastname: Franck
authors.forename: Frédéric
authors.initials: F
authors.lastname: Ricolfi
authors.forename: Paul
authors.initials: P
authors.lastname: Ballongue
authors.forename: Marcel
authors.initials: M
authors.lastname: Tencé
mesh_terms: D000465:Algorithms; D002138:Calibration; D006801:Humans; D007091:Image Processing, Computer-Assisted; D017785:Photons; D011877:Radionuclide Imaging / Q000379:methods* / Q000592:standards