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. Author manuscript; available in PMC: 2020 Jul 1.
Published in final edited form as: J Magn Reson Imaging. 2019 Dec 18;52(1):117–128. doi: 10.1002/jmri.27004

TABLE 1.

In Vitro Steady Flow 4D Spiral Dual Venc Scan Parameters

Stenotic phantom constant now experiment (Q(t) = 130 mL/s)
Field of view (mm) 100*100*60
Resolution (mm) 1.56*1.56*3
Number of slices 20
Matrix size 64*64
Flip angle (°) 12
Triggering frequency (min−1) 72
Number of phases 16
Spiral TE/TR (msec) 1.85/11
Readout time (msec) 4
Number of interleaves 36
Systole Venc (cm/s) 400/600/800
Diastole Venc (cm/s) 250
Venc switch time (msec) (TDV) 365

The steady flow scans were gated in order to allow for a Dual-Venc 4D Spiral Flow assessment using the proposed pulse sequence. The Venc was determined via a prior 2D through plane phase-contrast scan from a region thought to have the highest flow velocities.