Abstract #1684
Continuous vibration single shot magnetic resonance elastography for fast wave image acquisition
Florian Dittmann 1 , Sebastian Hirsch 1 , Jing Guo 1 , Jrgen Braun 2 , and Ingolf Sack 1
1
Institute of Radiology, Charit -
Universittsmedizin Berlin, Berlin, Germany,
2
Institute
of Medical Informatics, Charit - Universittsmedizin
Berlin, Berlin, Germany
We propose a single shot MRE sequence synchronized to
continuous mechanical vibrations by adaptive measurement
block shifting. As a result, measurement time is
significantly reduced compared to former single shot MRE
sequences without compromising SNR and data quality. The
new sequence is demonstrated for high resolution
elastography of the brain by applying 15 frequencies in
the range from 25 to 60 Hz and multifrequency wave field
inversion. For 7 slices, 8 wave dynamics and three field
components data acquisition for 15 frequencies was
accomplished within 9:40 min which is to our knowledge
the fastest MRE sequence currently available.
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