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Optimizing rod window width in positron emission tomography.

Abstract：

:A technique determines the optimal window width for orbiting rod transmission studies in positron emission tomography (PET). Windowing reduces noise in orbiting rod transmission studies. Lines-of-response (LOR) which intersect the rods generate primarily true coincidence events. LOR which pass far from the rods generate random and scatter events. Since the angular position of the orbiting rods is known in real-time, LOR which produce mostly noise are gated off. When optimally determined, the rod window width maximizes the noise equivalent counts (NEC) collected in the transmission study. Transaxial rod projection profiles of trues, randoms, and scatter produce NEC versus window width plots. For the ECAT EXACT line of PET systems and a 20-cm water cylinder, optimal is five LOR wide.

journal_name

IEEE Trans Med Imaging

journal_title

IEEE transactions on medical imaging

authors

Jones WF,Digby WM,Luk WK,Casey ME,Byars LG

doi

10.1109/42.387708

subject

Has Abstract

pub_date

1995-01-01 00:00:00

pages

266-70

issue

2

eissn

0278-0062

issn

1558-254X

journal_volume

14

pub_type

杂志文章

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