Application of MWI-a new parameter of wave intensity / 中国医学影像技术

ABSTRACT

Objective To investigate the feasibility of mean wave intensity (MWI), W1 and W2 in assessing the function of common carotid artery (CCA) before and after cold presser test with wave intensity analysis. Methods Twenty-four healthy subjects were enrolled. The W1, W2, and other parameters of blood flow in resting, before and after cold presser test of CCA, the inner diameter different rate and MWI of blood flow were calculated respectively. The receiver operation characteristic (ROC) curves were drawn, and of the effectiveness of MWI, W1 and W2 was compared. Results The different rate of diameters and W1 decreased significantly when subjects underwent cold presser test (P＜0.05), but MWI and W2 increased significantly (P＜0.05). The area under ROC curves was 0.858, 0.731 and 0.698, corresponding to MWI, W1 and W2 (P＞0.05). Conclusion The function of CCA can be evaluated with MWI calculated from conventional parameters.