B 型超声测量的颈总动脉内膜中层厚度与 M 型测量的结果有差异吗？

Does B-mode common carotid artery intima-media thickness differ from M-model?

作者信息

Van Bortel L M, Vanmolkot F H, van der Heijden-Spek J J, Bregu M, Staessen J A, Hoeks A P

机构信息

Department of Pharmacology, Maastricht University, Cardiovascular Research Institute Maastricht (CARIM), Maastricht, The Netherlands.

出版信息

Ultrasound Med Biol. 2001 Oct;27(10):1333-6. doi: 10.1016/s0301-5629(01)00448-3.

DOI:10.1016/s0301-5629(01)00448-3

PMID:11731046

Abstract

An increased intima-media thickness of the common carotid artery is thought to be an early sign of atherosclerosis. Both B- and M-mode ultrasonographic techniques are used to measure the intima-media thickness of the common carotid artery (B-IMT and M-IMT, respectively). The present study compares intima-media thickness of the common carotid artery measured with the two techniques. Intima-media thickness was measured in a random population sample of 250 subjects. Comparison was made by mean and 95% confidence intervals of differences between B-IMT and M-IMT, by linear regression analysis, and by intraclass and concordance correlation coefficients. M-IMT was + 0.011 +/- 0.091 mm (95% confidence intervals: -0.167 to + 0.188 mm) larger than B-IMT, which was 0.661 +/- 0.136 mm (range: 0.380 to 1.120 mm). Intraclass and concordance correlation coefficients were 0.802 and 0.801, respectively. In conclusion, acceptable agreement exists between the two methods and there was no important systematic difference between B-IMT and M-IMT.

摘要

颈总动脉内膜中层厚度增加被认为是动脉粥样硬化的早期迹象。B 型和 M 型超声技术均用于测量颈总动脉的内膜中层厚度（分别为 B-IMT 和 M-IMT）。本研究比较了用这两种技术测量的颈总动脉内膜中层厚度。在 250 名受试者的随机人群样本中测量了内膜中层厚度。通过 B-IMT 和 M-IMT 之间差异的均值和 95%置信区间、线性回归分析以及组内相关系数和一致性相关系数进行比较。M-IMT 比 B-IMT 大 +0.011±0.091 毫米（95%置信区间：-0.167 至 +0.188 毫米），B-IMT 为 0.661±0.136 毫米（范围：0.380 至 1.120 毫米）。组内相关系数和一致性相关系数分别为 0.802 和 0.801。总之，两种方法之间存在可接受的一致性，B-IMT 和 M-IMT 之间没有重要的系统差异。