Abstract #4451

The impact of shorter acquisition time in MRF: Long term repeatability and reproducibility study on ISMRM/NIST phantom and volunteers.

Yutaka Kato¹, Kazushige Ichikawa¹, Toshiaki Taoka², Hirokazu Kawaguchi³, Katsutoshi Murata³, Katsuya Maruyama³, Gregor Koerzdoerfer^4,5, Josef Pfeuffer⁴, Mathias Nittka⁴, and Shinji Naganawa²

¹Department of Radiological Technology, Nagoya University Hospital, Nagoya, Japan, ²Department of Radiology, Nagoya University Hospital, Nagoya, Japan, ³MR Research & Collaboration, SIEMENS Healthcare K.K., Tokyo, Japan, ⁴Magnetic Resonance, Siemens Healthcare GmbH, Erlangen, Germany, ⁵Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany

This study focused on the stability of MRF in a phantom and volunteers, and explored the feasibility of MRF with a shorter acquisition time. Phantom scans on 40 days and volunteer scans on 5 days over 3 months showed comparable repeatability and reproducibility of T1 and T2 values between MRF with acquisition times of 41 sec and 20 sec. Shorter acquisition time has the potential to expand the clinical usage of MRF.

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