Huiming Dong1, Prateek Kalra1, Richard D White1, and Arunark Kolipaka1
1Radiology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
1Radiology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
We demonstrated a new inversion strategy
for aortic MRE to reduce the impact of aorta (abdominal aortic aneurysm) geometry
on stiffness estimation.
Figure
1. Flow Diagram of the Proposed Aortic MRE Inversion Strategy.
Figure 4. Aortic Stiffness
in Healthy Subjects and in AAA Patients. MRE wave images were overlaid on the anatomical image
for each subject. Higher stiffness was observed in senior healthy subject (a
vs. b). For patients, vascular surgeons were blind to AAA stiffness
measurements. EVAR repairs were recommended to the patients based on AAA
diameters and growth rate. In patients with small or stable AAAs (c, d and f),
AAA stiffness was considerably higher than that in patient who has a rapidly
growing AAA (e). All stiffness estimation were performed using the
proposed inversion technique.