Figure 1
From: Light Emitting Diodes based Photoacoustic Imaging and Potential Clinical Applications
(a) Coronal, (b) axial, and (c) sagittal views of the 3D PA and US combined image of a human finger from a volunteer. (d) Perspective view of the 3D PA image showing the microvessels in the finger. 3D rendering of the vasculature is in the Supplementary Materials (Video 1). (e) Four frames from a video showing the cine loop of B-scan PA imaging of a human finger (index finger, sagittal section) presenting the pulsation of an artery marked by the arrows. Imaging frame rate: 10 Hz. The video is in the Supplementary Materials (Video 2). (f) Two frames from a video showing the cine loop of B-scan PA imaging of a human finger (index finger, sagittal section) showing the blood reperfusion into the finger after releasing of the rubber band which tied around root of the finger. (Left) The image acquired right after the rubber band releasing; (Right) The image acquired at 46 milliseconds after the rubber band releasing. The flow rate Imaging frame rate: 500 Hz. The distance between two asterisks is measured to be 4.6 mm. Blood flow direction is marked by the arrow. The video is in the Supplementary Materials (Video 3).
