Valentina Taviani1, Andrew James Patterson1,
Martin J. Graves1, Christopher J. Hardy2, Pauline W.
Worters3, Michael P. Sutcliffe4, Jonathan Harvey
Gillard1
1Department of Radiology, University of
Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom; 2GE
Global Research, Niskayuna, NY, United States; 3Department of
Radiology, Stanford University, Lucas Center, Stanford, CA, United States; 4Department
of Engineering, University of Cambridge, Cambridge, United Kingdom
Accuracy
and repeatability of pulse wave velocities (PWVs) obtained from Fourier
velocity encoded (FVE) M-mode and 2D phase contrast (PC) with through-plane
velocity encoding were investigated using five different analysis techniques.
Accuracy was tested on a tubular human-tissue-mimicking phantom integrated
into a flow simulator. The gold standard was obtained from the Moens-Korteweg
equation after measurement of the tube elastic modulus by uniaxial tensile testing.
Repeatability was evaluated across three MR visits. Similarly accurate
results were obtained with the two MR techniques, provided the optimal
algorithm was used. M-mode PWVs were more repeatable than PC PWVs, regardless
of the analysis technique.
Keywords