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Abstract #1788

The Optimal Condition for Maintaining Uniform k-space Coverage after Retrospective Respiratory Gating in 3D Radial-Acquisition Imaging

Jinil Park1,2, Taehoon Shin3, Soon Ho Yoon4,5, Jin Mo Goo4,5,6, and Jang-Yeon Park1,2

1Center for Neuroscience Imaging Research, Institute for Basic Science, Suwon, Korea, Republic of, 2Department of Biomedical Engineering, Sungkyunkwan University, Suwon, Korea, Republic of, 3Diagnostic Radiology and Nuclear Medicine, University of Maryland, Baltimore, MD, United States, 4Department of Radiology, Seoul National University College of Medicine, Seoul, Korea, Republic of, 5Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea, Republic of, 6Cancer Research Institute, Seoul National University, Seoul, Korea, Republic of

Radial-acquisition imaging is suitable for lung imaging because it allows a very short TE and a desirable degree of motion insensitivity. Despite its tolerance to motion artifacts, respiratory motion is still a major reason of causing image artifacts in lung imaging, which motivates the need for the respiratory gating. In retrospective-respiratory gating, it is significant to keep the k-space as uniform as possible after gating. In this study, we explore the optimal condition for obtaining uniform k-space coverage after retrospective gating in consideration of various breathing patterns.

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