Jennifer Anne Steeden1,2, David Atkinson1, Andrew M. Taylor2, Vivek Muthurangu2
1Medical Physics, University College London, Gower Street, London, United Kingdom; 2Centre for Cardiovascular MR, UCL Institute of Child Health, 30 Guilford Street, London, United Kingdom
Real-time phase contrast (PC) imaging has a low temporal resolution because interleaved flow-encoded and compensated readouts must be acquired. We have developed a hybrid real-time PC sequence that acquires real-time flow-encoded and flow-compensated readouts in alternating blocks. The encoded data is subsequently matched to the compensated data, allowing the temporal resolution to be effectively doubled. This technique was demonstrated in 10 volunteers to adequately match the flow-compensated data to the flow-encoded data. It was also shown to accurately measure stroke volumes, with a good correlation against a reference gated sequence and an in-house real-time interleaved flow sequence.