Pilar Sango Solanas1, Kevin Tse Ve Koon1, Eric Van Reeth1,2, Cyrielle Caussy3,4, and Olivier Beuf1
1Univ Lyon, INSA‐Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1206, F‐69616, Lyon, France, 2CPE Lyon, Département Sciences du Numérique, Lyon, France, 3Univ Lyon, Laboratoire CarMen, Inserm, INRAe, INSA Lyon, Université Claude Bernard Lyon 1, Pierre-Bénite, France, 4Hospices Civils de Lyon, Département Endocrinologie, Diabète et Nutrition, Hôpital Lyon Sud, Pierre-Bénite, France
1Univ Lyon, INSA‐Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1206, F‐69616, Lyon, France, 2CPE Lyon, Département Sciences du Numérique, Lyon, France, 3Univ Lyon, Laboratoire CarMen, Inserm, INRAe, INSA Lyon, Université Claude Bernard Lyon 1, Pierre-Bénite, France, 4Hospices Civils de Lyon, Département Endocrinologie, Diabète et Nutrition, Hôpital Lyon Sud, Pierre-Bénite, France
An OC-based pulse able to encode motion into the phase of the NMR signal
is exploited to perform simultaneous multifrequency MRE. The obtained shear
waves patterns correspond to those found with classical MEG but with a shorter
TE.
Figure 2. A) Phase image of the composite
excitation (rad). B) Then separed in phase images (rad) of every frequency
component extracted after temporal fourier transform: top, 400 Hz; bottom, 600Hz.
C) G' elastograms (kPa) reconstructed for each frequency component.
Figure 1. Experimental
setup: the shear wave propagates in the phantom along the x-axis.
The shear wave-dephasing angle is defined as θi=2πxi/λ with xi representing
a specific position.
