New strategy of improving the image quality of respiratory-gated Projection Acquisition using 3D k-space spiral trajectory
Jinil Park 1 , Chanhee Lee 1 , Soon Ho Yoon 2 , Jin Mo Goo 2 , and Jang-Yeon Park 1
School of Biomedical Engineering, Konkuk
University, Chung-ju, Chungcheongbuk-do, Korea,
of Radiology, Seoul National University College of
Medicine, Seoul, Korea
A new and simple strategy of improving the image quality
of respiratory-gated PA data was proposed here when
using a 3D spiral trajectory to fill in k-space. Based
on the gradient-view generation algorithm we upgraded.
show that increasing the number of interleaves can
practically be a good and easy way to avoid streak
artifacts as well as blurring due to the non-uniformity
of k-space trajectory when filling in 3D k-space with a
spiral trajectory. Considering the wide use of a 3D
k-space spiral trajectory with interleaves, this method
would be useful in practice.
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