Highly accelerated quantitative flow measurements using k-t SENSE with large coil arrays
Baltes C, Hansen M, Nehrke K, Kozerke S, Boesiger P, Tsao J
University & ETH
The feasibility of accelerating data collection in phase-contrast (PC) velocity mapping using k-t SENSE has been demonstrated recently. However, the accuracy of flow quantification was compromised at high acceleration factors due to slight temporal low-pass filtering. In this work, the impact of large coil arrays on the accuracy of k-t SENSE accelerated flow measurements was investigated. A fully sampled reference dataset was acquired and a subset of these data was used to simulate 16-fold accelerated PC flow measurements. It is demonstrated that the accuracy of quantitative flow measurements improves when using a larger number of coil elements.