An intracavitary convex array probe for detecting internal carotid artery disease / 南方医科大学学报

<p><b>OBJECTIVE</b>To assess the value of an intracavitary convex array probe in detecting internal carotid artery (ICA) disease.</p><p><b>METHODS</b>Eighty-six carotid arteries in 43 cases were examined with intracavitary convex array probe, low-frequency convex array probe and high-frequency linear probe to collect the data including the ICA visible length, peak systolic velocity (PSV), internal diameter, blood vessel shape; common carotid artery (CCA) intimae-medial thickness (IMT), PSV, and internal diameter.</p><p><b>RESULTS</b>Significant differences were noted in the visible length, PSV of ICA, and internal diameter detected by different frequency ultrasound probes. Intracavitary probe and high-frequency probe produced significantly different findings of the blood vessel shape.</p><p><b>CONCLUSION</b>Intracavitary convex array probe has important clinical value in detecting of ICA disease.</p>

Color Doppler and contrast-enhanced ultrasonography for assessment of vascular perfusion in porcine liver allografts with acute graft rejection / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the feasibility of evaluating hepatic blood perfusion after liver transplantation using color Doppler and contrast-enhanced ultrasonography and the diagnostic value of hepatic blood perfusion for acute graft rejection.</p><p><b>METHOD</b>In this before-after study with quantitative analysis, contrast-enhanced sonography was performed with simultaneous liver function monitoring in porcine models of allograft liver transplantation before and after the operation.</p><p><b>RESULTS</b>In pigs with acute graft rejection, the AUC decreased significantly after transplantation as compared with that of non-rejection transplant group (F=11.069, P=0.011), but the parameters including A, Alpha, C, t(0), DPI, or TTP showed no significant differences between the two groups.</p><p><b>CONCLUSIONS</b>Pulse-inversion contrast harmonic imaging combined with acoustic quantitative technology can be an efficient means for evaluating blood perfusion in the liver allograft, and the TIC obtained using this method possesses high values for quantitative evaluation of liver allograft rejection.</p>