Abstract #1295
Cross-Validation of Magnetic Resonance Elastography by Continuous Acoustic Vibration and Ultrasound Elastography by Acoustic Radiation Force Impulse: a Phantom Study
Mikio Suga 1,2 , Riwa Kishimoto 2 , Atsuhisa Koyama 1 , Tetsuya Wakayama 3 , Takayuki Obata 2 , and Hiroshi Tsuji 2
1
Chiba University, Chiba, Chiba, Japan,
2
National
Institute of Radiological Sciences, Chiba, Chiba, Japan,
3
GE
Healthcare Japan, Tokyo, Japan
For noninvasive evaluation of biomedical tissue
elasticity, magnetic resonance elastography (MRE) and
ultrasound elastography (USE) using acoustic radiation
force impulse (ARFI) have become common for use in
clinical practice. However, USE-ARFI has not yet been
compared with MRE. In this study, the quantitativity of
MRE and USE-ARFI (VTTQ) measurement was evaluated by
polyacrylamide phantoms. There was strong correlation
between MRE and rheometer, and VTTQ and rheometer. VTTQ
with 4 MHz convex probe showed higher standard
deviation, and VTTQ and MRE showed different depth
dependency. Therefore, we should consider of the
properties of each method.
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