Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Reexamination Certificate
2006-11-07
2006-11-07
Gagliardi, Albert (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
C250S363070
Reexamination Certificate
active
07132663
ABSTRACT:
Methods and apparatus for correcting for at least one of deadtime losses and random coincidences in a positron emission tomography (PET) medical imaging device having a plurality of detectors at successive locations circumferentially spaced about a viewing area, the method comprising, receiving signals indicative of positron-electron annihilation events occurring along a line of response between pairs of detectors for a plurality of predetermined time segments of data acquisition of the events, calculating a correction sinogram for each predetermined time segment from data acquired during each respective single time segment, calculating corrected counts in the correction sinogram for each time segment, calculating a time-weighted correction sinogram for each time segment, combining the time-weighted correction sinogram to generate an acquisition sinogram, and generating an image from the acquisition sinogram.
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McDaniel David Leo
Williams John Jay
Gagliardi Albert
General Electric Company
Small Dean D.
Small Patent Law Group
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