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Tri-modality images of atherosclerotic rabbit . (Ia-IVa) combined OCT (inner) and fluorescence (outer), (Ib-IVb) US, (Ic-IVc) fused tri-modality and (Id-IVd) hematoxylin and eosin(H&E) histology. The artifact circles in the IVUS images are caused by the ultrasound pulse ring-down effect and the reflection of the catheter sheath. (II) and (III) aorta with plaque, indicated by white arrows. (I) and (IV) are healthy aorta. Scale bars are 1 mm.
