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Abstract #3717

A noval method of correcting off-center errors for radial acquisition with arbitrary angle.

Ming Yang 1 , Haikun Qi 2 , Shuo Zhang 3 , Guang Qiang Geng 1 , Chen Guang Zhao 1 , Huijun Chen 2 , and Feng Huang 1

1 Philips Healthcare, Suzhou, Jiangsu, China, 2 Center for Biomedical Imaging Research, Tsinghua University, Beijing, China, 3 Philips Healthcare, Singapore, Singapore

This abstracts introduces a method to correct the off-center issue caused by gradient delays in radial arbitrary-angle acquisition. Instead of using 0-180 and 90-270 projection pairs, this method only requires a number of pairs of pseudo anti-parallel projections and then applies Linear regression method such as least square method to estimate the gradient delays. Therefore, the off-center error can be compensated during the reconstruction for arbitrary-angle, such as golden-angle radial acquisition. This method is tested on phantom and human Golden-angle radial MR images and result shows the image quality is improved with off-center error corrected using this method.

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