Oblon, McClelland, Maier & Neustadt, L.L.P.
Random estimation in positron emission tomography with tangential time-of-flight mask
A method of estimating random events in positron emission tomography list mode data, including obtaining time-of-flight (TOF) list mode count data that includes TOF information; converting the obtained TOF list mode count data into four-dimensional (4D) raw sinogram count data, without using the TOF information, wherein the 4D raw sinogram count data includes random count values; interpolating the 4D raw sinogram count data to generate 4D interpolated sinogram count data; low-pass filtering the 4D interpolated sinogram count data to remove noise; converting the low-pass filtered 4D interpolated sinogram count data into filtered 4D raw sinogram count data; and generating, by a processor, five-dimensional (5D) TOF raw sinogram count data from the filtered 4D raw sinogram count data by effectively applying a TOF mask filter to the filtered 4D raw sinogram count data.
Toshiba Medical Systems Corporation Kabushiki Kaisha Toshiba
G G G A
G16B G16B G16B A61B
inventional inventional inventional inventional
Xiaofeng Wenli
Niu Wang