Comparison of Acoustic Radiation Force Impulse Imaging Derived Carotid Plaque Stiffness With Spatially Registered MRI Determined Composition. - Joshua R. Doherty; Jeremy J. Dahl; Peter G. Kranz; Nada El Husseini; Hing-Chiu Chang; Nan-kuei Chen; Jason D. Allen; Katherine L. Ham; Gregg E. Trahey (IEEE Trans. Medical Imaging, 2015)