Title :
Real-time data acquisition and maximum-likelihood estimation for gamma cameras
Author :
Furenlid, L.R. ; Hesterman, J.Y. ; Barrett, H.H.
Author_Institution :
Dept. of Radiol., Arizona Univ., Tucson, AZ
Abstract :
We have developed modular gamma-ray cameras for biomedical imaging that acquire data with a raw list-mode acquisition architecture. All observations associated with a gamma-ray event, such as photomultiplier (PMT) signals and time, are assembled into an event packet and added to an ordered list of event entries that comprise the acquired data. In this paper we present the design of the data-acquisition system, and discuss algorithms for a specialized computing engine to reside in the data path between the front and back ends of each camera and carry out maximum-likelihood position and energy estimations in real time while data was being acquired
Keywords :
biomedical imaging; data acquisition; gamma-ray detection; maximum likelihood estimation; radioisotope imaging; biomedical imaging; energy estimation; maximum-likelihood estimation; modular gamma-ray cameras; position estimation; raw list-mode acquisition architecture; real-time data acquisition; Algorithm design and analysis; Assembly; Cameras; Data acquisition; Engines; Event detection; Maximum likelihood detection; Maximum likelihood estimation; Optical buffering; Photomultipliers;
Conference_Titel :
Real Time Conference, 2005. 14th IEEE-NPSS
Conference_Location :
Stockholm
Print_ISBN :
0-7803-9183-7
DOI :
10.1109/RTC.2005.1547506
