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Abstract #2400

Comparison of K-t SPIRiT and K-t GRAPPA for Accelerating Cardiac DCE and CINE MRI

Dan Zhu 1 , Feng Huang 2 , Feiyu Chen 1 , Haikun Qi 1 , Kui Ying 3 , Chun Yuan 1 , and Huijun Chen 1

1 Biomedical Engineering, Tsinghua University, Beijing, Beijing, China, 2 Philips Healthcare, Florida, United States, 3 Engineering Physics, Tsinghua University, Beijing, China

We compared the efficiency of k-t GRAPPA and k-t SPIRiT on cardiac DCE and CINE. By comparing the RMSEs and the intensity evolutions of DCE, as well as the RMSEs of CINE, we demonstrated that cardiac images reconstructed by both approaches from highly accelerated datasets are quite similar to the fully-sampled reference. However, k-t GRAPPA has lower RMSE and less computational cost, thus it is preferred to accelerate cardiac DCE and CINE imaging. Nevertheless, k-t SPIRiT could also be used when k-t GRAPPA is impossible such as reconstruction of randomly sampled k-space.

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