Figures & data
Figure 1. Protocol for hemorrhage control using image-guided HIFU.
Figure 2. Gross (a) and light microscopy (b) observations of a HIFU-sealed puncture site in the femoral artery. The puncture was sealed by coagulated blood (white arrow) and a fibrous cap (black arrow). The histological slide was stained with Masson's trichrome stain.
Figure 3. (a) HIFU annular array, integrated with an ultrasound imaging probe (arrow). (b) Before HIFU, patent hepatic vein (outlined by dashed lines) is visualized using Color Doppler (arrow). (c) During HIFU, hyperecho (arrow) formed at the position of the vessel. (d) After HIFU, the occluded vein (outlined by dashed lines) shows no flow (arrow). The site of treatment is seen as a hyperechoic region surrounding a vein that appears to be collapsed (arrowhead).
Figure 4. Pulsed Doppler spectrum obtained from the femoral artery before and after the injury was produced. (a) Normal arterial blood flow before the injury. (b) Bleeding artery shows a spectrum with increased baseline and elevated peak amplitude.
