Abstract #1657

Cardiac function and strain analysis at 7T in comparison to 3T

Bernd Jung^1,2, Gabriele Bonanno^2,3,4, Sebastian Schmitter^5,6, Dominik P Guensch^1,7, and Kady Fischer⁷

¹Dept. of Diagnostic, Interventional and Pediatric Radiology, Inselspital, Bern University Hospital, Bern, Switzerland, ²Translation Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine, Bern, Switzerland, ³Advanced Clinical Imaging Technology, Siemens Healthineers International AG, Bern, Switzerland, ⁴Magnetic Resonance Methodology, Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, Bern, Switzerland, ⁵Physikalisch-Technische Bundesanstalt (PTB), Berlin, Germany, ⁶Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, United States, ⁷Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, Bern, Switzerland

Synopsis

Keywords: Myocardium, High-Field MRI, Cardiac function, Strain

Motivation: To investigate whether a single set of shim values can provide reliable image quality for cardiac MRI at 7T.

Goal(s): To establish an efficient workflow for cardiac cine imaging at 7T.

Approach: Short-axis and long-axis views were acquired in five subjects with different spatial resolution at 3T and 7T. Volumetric parameters and peak global longitudinal and circumferential strain were assessed for left and right ventricle.

Results: No significant differences of volume parameters, field strength or spatial resolution were found. A single B1 shim set for the whole examination providing reliable image quality and quantification results constitute an essential step towards clinical cardiac imaging.

Impact: An efficient workflow and reliable image quality of cine images for the assessment of cardiac volumes and strain at 7 Tesla could be realized with results in close agreement to 3T – an essential step towards clinical routine cardiac examinations.

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