Abstract #4300
Attenuation correction for PET/MR using continuous pseudo-CT derived from MR T1w and population CT images
Yasheng Chen 1 , Meher Juttukonda 1 , Yi Su 2 , Tammie Benzinger 2 , Brian Rubin 3 , Yueh Z Lee 1 , Felipe Espinoza 4 , Weili Lin 1 , Dinggang Shen 1 , David S Lalush 5 , and Hongyu An 1
1
Radiology and BRIC, University of North
Carolina at Chapel Hill, Chapel Hill, North Carolina,
United States,
2
Radiology,
Washington University in St. Louis, St. Louis, MO,
United States,
3
Surgery
and Radiology, Washington University in St. Louis, St.
Louis, MO, United States,
4
Radiology,
University of North Carolina at Chapel Hill, Chapel
Hill, North Carolina, United States,
5
Biomedical
Engineering, University of North Carolina at Chapel
Hill, Chapel Hill, North Carolina, United States
An atlas based method has been developed to derive
pseudo continuous CT images using MR T1w images for PET
attenuation correction. Population probabilistic map for
air space segmentation and a sparse regression to
enhance the local structure similarity were employed to
achieve an improved AC accuracy.
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