Abstract #2685

Time-of-flight unlimited: Novel self-gated unenhanced peripheral MR angiography with continuous table movement in less than 7 minutes

Michael O. Zenge¹, Justin Ream², Ankur Doshi², Mary Bruno², Christopher Stroehlein³, Peter Speier³, Hersh Chandarana², and Harald H. Quick^4,5

¹Siemens Healthcare, Malvern, PA, United States, ²Radiology, NYU Langone Medical Center, New York, NY, United States, ³Siemens Healthcare, Erlangen, Germany, ⁴Erwin L. Hahn Institute for MR Imaging, University Duisburg-Essen, Essen, Germany, ⁵High Field and Hybrid MR Imaging, University Hospital Essen, Essen, Germany

Although unenhanced MR angiography eliminates the need for contrast injection, it would use ECG triggering which adds extra time and complexity to patient preparation. In the current work, time-of-flight (TOF) unlimited introduces self-gated rapid, radial MR imaging with continuous table movement for seamless coverage of the peripheral vasculature. In-vivo experiments in five healthy volunteers and two patients were performed. Initial results are more than promising and TOF unlimited demonstrates similar image quality compared to conventional ECG triggered TOF despite sevenfold accelerated data acquisition. Thus, novel TOF unlimited may be a time efficient screening tool for peripheral arterial disease.

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