Emission tomography with a large-hole collimator (CACAO): a possible new way to improve radionuclide imaging.
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.
Jeanguillaume
Christian
C
Service de médecine nucléaire, CHU d'Angers, Hôpital Larrey, 40933 Angers, France. jeanguillaume@ieee.org
Quartuccio
Marc
M
Begot
Stéphane
S
Douiri
Abdellah
A
Franck
Didier
D
Ricolfi
Frédéric
F
Ballongue
Paul
P
Tencé
Marcel
M
D000465:Algorithms; D002138:Calibration; D006801:Humans; D007091:Image Processing, Computer-Assisted; D017785:Photons; D011877:Radionuclide Imaging / Q000379:methods* / Q000592:standards