Abstract
Background Existing cardiac magnetic resonance sequences are frequently suboptimal in the measurement of the aortic arch, particularly in the case of arch obstruction. Navigated three-dimensional (3-D) sampling perfection with application optimized contrast using different flip angle evolution (SPACE) is a novel turbo spin echo dark blood cardiac magnetic resonance sequence that yields a robust 3-D dataset and gates in systole in order to demonstrate the maximal aortic caliber. Additionally, it utilizes susceptibility for optimal blood suppression by orienting blood flow in the readout direction, thereby enhancing imaging in the setting of turbulence. We report our experience measuring the aortic arch using this sequence.
Highlights
Existing cardiac magnetic resonance sequences are frequently suboptimal in the measurement of the aortic arch, in the case of arch obstruction
Aortic arch measurements were obtained from navigated 3-D SPACE images and other magnetic resonance sequences that were performed during the same study
The intraclass correlation coefficients (ICC) for agreement between measurements derived from navigated 3D SPACE and those derived from steady state free precession Cine, twodimensional dark blood imaging and gadoliniumenhanced magnetic resonance angiography were 0.734 (p < 0.001), 0.891 (p < 0.001) and 0.951 (p < 0.001) respectively
Summary
Reliable aortic arch measurements using a novel cardiac magnetic resonance sequence: navigated 3D SPACE. Hari K Narayan1*, Yoav Dori, Matthew A Harris, Marc S Keller, Gary R McNeal, Mark A Fogel, Kevin K Whitehead. From 19th Annual SCMR Scientific Sessions Los Angeles, CA, USA. From 19th Annual SCMR Scientific Sessions Los Angeles, CA, USA. 27-30 January 2016
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