Abstract #0877
Quiet, Dual-Contrast Ultra-Short Echo Time MRA of the Extracranial Carotid Arteries
Ioannis Koktzoglou 1,2 , Ian G Murphy 1,3 , David Grodzki 4 , Shivraman Giri 5 , and Robert R Edelman 1,3
1
Radiology, NorthShore University
HealthSystem, Evanston, IL, United States,
2
Radiology,
The University of Chicago Pritzker School of Medicine,
Chicago, IL, United States,
3
Radiology,
Northwestern University Feinberg School of Medicine,
Chicago, IL, United States,
4
Healthcare
Sector, Siemens AG, Erlangen, Germany,
5
Siemens
Healthcare, Chicago, IL, United States
Magnetic resonance angiography (MRA) is an accurate
diagnostic modality for evaluating stenotic disease of
the extracranial carotid arteries. For patients in whom
the administration of gadolinium-based contrast agents
is contraindicated, time-of-flight MRA is commonly used.
However, image quality is variable and only a limited
vascular region is depicted. We describe an alternative
approach for non-contrast MRA using ultra-short echo
time 3D point-wise encoding time reduction with radial
acquisition (PETRA) sequence that allows for evaluation
of the carotid arteries using both bright- and
dark-blood projection images, and eliminates signal loss
near severe stenoses.
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