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Abstract #3819

Efficient Hybrid Parallel Imaging Reconstruction with Rotating Radiofrequency Coil Array

Mingyan Li1, Jin Jin1, Feng Liu1, Adnan Trakic1, Stuart Crozier1

1School of Information Technology and Electrical Engineering , The University of Queensland, Brisbane, Queensland, Australia

With the ability of encoding larger number of sensitivity profiles, the novel 4-element rotating radiofrequency coil array (RRFCA) has better imaging acceleration performance than stationary phased-array coils (PACs). However, with more time-varying sensitivity encoding, the system matrix of RRFCA is more complex and leads to a longer reconstruction time. In this work, while maintaining the same acceleration capability, the fast hybrid image reconstruction strategy reduces the number of sensitivity encodings and obtains the fast initial estimation to improve the efficiency and accuracy of accelerated image reconstruction with RRFCA.

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Keywords

accelerated acceleration accounting accurate achieved acquisition adapted adjacent advantageous angular array arrives away bottom capability channels choosing coil coils combined commutating conjugate constant corrected critical degrees density described desktop despite direct distribution dividing dramatic easier efficiency efficient electrical element elements eliminating encoding equations estimation excellent fast feasible final form forward future ghosting good gradient help hence highly hybrid identical illustrates improve improved improvement increasing index initial intensity introduce introduced inverse iterative jointly journal known leads linear loss matrix middle minute modality mode modulus movement novel open operation owing paper parallel penetration performance position practical process produced profiles proton quality quotient readily receive receiver recent reconstruction recovering reducing reduction refer relatively remaining replacing revolves rotating samples sampling school sensitivity significantly simple simulated simulation since slight solution solving space spatial stationary stays stepping strategy studied studies subject sufficient suitable superior system taking terms theoretically transform transmit typically uniformity unknowns varying velocity wave wherein