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Abstract #1585

Real-Time Observation of Spatiotemporal Dynamics of Arterial Pulsatility with MR-Encephalography

Jrgen Hennig1, Thimo Grotz1, Benjamin Zahneisen1, Arsenne Ella1, Maxim Zaitsev, Irina Mader2, Andreas Harloff3

1 Dept. of Diagnostic Radiology, Medical Physics, University Hospital Freiburg, Freiburg, Germany; 2Neuroradiology, University Hospital Freiburg, Freiburg, Germany; 3Neurology, University Hospital Freiburg, Freiburg, Germany

The paper presents results from fast measurements of the spatiotemporal measurements of arterial pulsatility in the area of the calcarine fissure measured by MR-encephalography (MREG). Results in 7 volunteers demonstrate that the peak of the arterial pulse wave is detected first in the cortext supplied by leptomeningeal arteries followed by white matter structures supplied through the circle of Willis. The sensitivity of the measurement allows real time detection of spatiotemporal variations with potential applications in stroke, stenosis and other hemodynamically relevant pathological conditions.