Figure 4
From: Fast assessment of lipid content in arteries in vivo by intravascular photoacoustic tomography
In vivo IVPA imaging of a rabbit aorta. (a–c) Intravascular PA and US images, and corresponding Verhoeff-van Gieson stained histopathology at different positions along aorta. Labels I-III correspond to PA, merged PA/US images, and histopathology, respectively. 1 mm grid scale was marked in PA/US images. (d) X-ray angiogram of IVPA catheter in the thoracic aorta, with forceps and ruler to locate the position of the catheter externally. (e) Reconstructed 3D merged PA/US image for a pullback segment of 20-mm length of the aorta. Images in this figure were collected at 4 fps and a pullback speed of 0.25 mm/s.
