Comparison between three-dimensional volume-selective turbo spin-echo Imaging and two-dimensional ultrasound for assessing carotid artery structure and function
Comparison between three-dimensional volume-selective turbo spin-echo Imaging and two-dimensional ultrasound for assessing carotid artery structure and function
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DOI：
10.1002/jmri.20257
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发表时间：
2005-03-01
影响因子：
4.4
通讯作者：
Firmin, DN
中科院分区：
文献类型：
--
作者：
Crowe, LA;Ariff, B;Firmin, DN
目的：比较容积选择性三维快速自旋回波（TSE）技术与超声（US）评估颈动脉壁的结构和functions.Materials和方法：一个三维容积选择性TSE技术被用来成像的颈动脉在10名健康受试者和5名高血压受试者（每个人都被扫描三次，而他们接受不同的高血压治疗）。在MR图像上测量管腔和管壁面积。通过单个横截面在三个方向上进行内膜中层厚度（IMT）和管腔直径的二维超声测量。使用心动周期内的管腔面积变化来确定扩张。为了验证，一个Bland-Altman分析被用来比较血管壁和管腔面积测量的三维MRI体积与US scannes.Results：协议之间的两种方法被发现。对于壁面积测量，显示出良好的一致性，但由于MRI显示外膜，因此存在系统性差异。这两种技术都提供了一种简单的方法来客观地测量管腔指数。MRI可以提供整个血管长度的周长，而US灵活且相对便宜。然而，当受试者回声较差时，超声的应用是有限的。高血压和健康人之间的差异被发现。结论：有一个良好的协议之间的MRI和临床建立的二维超声方法。MRI方法具有提供增加的血管覆盖的优点，这允许在不假设血管均匀性的情况下评估局部异常。
Purpose: To compare a volume-selective three-dimensional turbo spin echo (TSE) technique with ultrasound (US) for assessing carotid artery wall structure and function.Materials and Methods: A three-dimensional volume-selective TSE technique was used to image the carotid artery in 10 healthy subjects and five hypertensive subjects (each of whom were scanned three times while they received different hypertension treatments). Lumen and wall area were measured on MR images. Two-dimensional US measurements of the intima-media thickness (IMT) and lumen diameter were taken in three orientations through a single cross section. The lumen area change over the cardiac cycle was used to determine distension. For validation, a Bland-Altman analysis was used to compare the vessel wall and lumen areas measured by three-dimensional MRI volumes with those obtained by US scans.Results: Agreement between the two methods was found. The mean difference in distension between US and MRI was 1.2% (+/-5.1%). For the wall area measurements, good agreement was shown, but there was a systematic difference due to the visualization of the adventitia by MRI. Both techniques offer an easy way to objectively measure lumen indices. MRI can provide the complete circumference over the length of a vessel, while US Is flexible and relatively inexpensive. The application of US is limited, however, when subjects are poorly echogenic. A difference between hypertensive and healthy subjects was found.Conclusion: There was a good agreement between MRI and the clinically established two-dimensional US method. The MRI method has the advantage of providing increased vessel coverage, which permits one to assess localized abnormalities without assuming vessel uniformity.