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Abstract #1518

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

1 School of Biomedical Engineering, Konkuk University, Chung-ju, Chungcheongbuk-do, Korea, 2 Department 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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