Abstract #2789

Comparison of Two Different Implementations for the Simultaneous Non-Contrast Angiography and Intraplaque Hemorrhage (SNAP) Sequence

M Louis Lauzon^1,2, Niranjan Balu³, Chun Yuan³, and Richard Frayne^1,2

¹Radiology and Clinical Neurosciences, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada, ²Seaman Family MR Research Centre, Foothills Medical Centre, Calgary, AB, Canada, ³Radiology, University of Washington, Seattle, WA, United States

We compare, using Bloch equation simulation, the relative signal in intraplaque hemorrhage (IPH), arterial wall (Wall) and Lumen (i.e., blood), along with the IPH–Wall contrast for two different implementations of the SNAP sequence. The first implementation is the original version (Ver1) that uses a linear phase-encoding scheme post-IR, whereas the second version (Ver2) uses centric slice-encodes post-IR. We show that, although Ver2 appears to be less time-efficient, it actually provides increased signal and contrast for the same acquisition time.

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