Jessica
Mende1, Marcus Radicke1, Anna-Lisa Kofahl1,
Judith Schindler1, Deniz Ulucay1, Jrgen Finsterbusch2,
Bernd Weber3, Karl Maier1
1HISKP, University of Bonn, Bonn,
Germany; 2University Medical Center, University of Hamburg,
Hamburg, Germany; 3NeuroCognition, Life & Brain, Bonn, Germany
Acoustic
radiation contrast in magnetic resonance phase images is a recently developed
method to image and quantify non-invasively the viscoelastic properties of
tissue. A displacement sensitive MRI spin-echo sequence was used to image the
displacement caused by the acoustic radiation force of ultrasound with a
frequency of 2.5 MHz, a pulse length of 20 ms and an intensity of 35 W/cm2.
To show the feasibility of this method, results of the detection of lesions
in a breast elastography phantom are presented. Finite-element simulations
show good agreement with the experimental data.
Keywords