Local threshold for segmented attenuation correction of PET imaging of the thorax
Local threshold for segmented attenuation correction of PET imaging of the thorax
复制标题
胸部 PET 成像分段衰减校正的局部阈值
DOI:
10.1109/nssmic.1993.373615
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发表时间:
1993
期刊:
影响因子:
--
通讯作者:
W. Digby
中科院分区:
文献类型:
--
作者:
M. Xu;W. K. Luk;P. D. Cutler;W. Digby
Local threshold for segmented attenuation correction technique has been developed for positron emission tomography using short (2-3 minutes) post-injection transmission scans. The technique implements an optimal threshold method on localized histograms to get pseudo-anatomic segmentation on transmission images. Theoretical values of attenuation coefficient are assigned to correspondent anatomic regions. Emission images are reconstructed using attenuation correction factors computed by forward-projecting segmented transmission images. Phantoms and clinical cardiac images are studied using this technique. The technique has been found linearly correlated with the standard method (15 minutes, pre-injection transmission scans), reducing noise in the final emission Images, eliminating process for substraction emission data from transmission scan, cutting down scan time and increasing patient throughput.<<ETX>>
DOI:
--
发表时间:
1993
期刊:
Journal of nuclear medicine : official publication, Society of Nuclear Medicine
影响因子:
--
作者:
Meikle,SR;Dahlbom,M;Cherry,SR
通讯作者:
Cherry,SR