Abstract #2521
Nonenhanced Evaluation of the Peripheral Arteries using Quiescent-Inflow Single-Shot with Arterial Spin Labeling (QISS ASL) MR Angiography
Robert R. Edelman 1,2 , Oisin Flanagan 2 , Shivraman Giri 3 , and Ioannis Koktzoglou 1,4
1
Radiology, NorthShore University
HealthSystem, Evanston, IL, United States,
2
Radiology,
Northwestern University, Feinberg School of Medicine,
Chicago, IL, United States,
3
Siemens
Healthcare, Chicago, IL, United States,
4
Radiology,
University of Chicago Pritzker School of Medicine,
Chicago, IL, United States
Quiescent-Inflow single-shot (QISS) MRA is accurate for
evaluation of the peripheral arteries. However, the
requirement for fat suppression imposes restrictions on
pulse sequence design, e.g. necessitating the use of
partial Fourier, which degrades spatial resolution and
reduces signal-to-noise ratio. We propose the use of an
arterial spin labeled version of QISS MRA to overcome
these limitations. The technique involves subtraction of
two QISS data sets, one with slice-selective saturation
and the other with nonselective saturation. QISS ASL
improves background suppression compared with standard
QISS, enabling visualization of smaller branch vessels
than would otherwise be possible. Venous suppression is
also improved.
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