Alizadeh Dehnavi Reza, Doornbos Joost, Tamsma Jouke T, Stuber Matthias, Putter Hein, van der Geest Rob J, Lamb Hildo J, de Roos Albert
Vascular Medicine, Department of General Internal Medicine and Endocrinology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands.
J Magn Reson Imaging. 2007 May;25(5):1035-43. doi: 10.1002/jmri.20904.
To examine the reproducibility of carotid artery dimension measurements using 3T MRI.
Ten healthy volunteers underwent three scans on two occasions for assessment of total vessel wall area (TVWA), total luminal area (TLA), and minimum (MinT) and maximum (MaxT) vessel wall thickness. A double inversion-recovery (IR) fast gradient-echo (FGRE) sequence was used on a commercial 3T system. During the first visit the subjects were scanned twice. The third scan was performed at least four days later. One observer traced all scans, and a second observer retraced the first scan series.
For TVWA an interclass correlation (ICC) of 0.994 was calculated with all three scans taken into account. The interobserver ICC was 0.984. The agreement between the scans for TLA showed an ICC of 0.982 with an interobserver ICC of 0.998. For MinT and MaxT an ICC of 0.843 and 0.935 were calculated, with interobserver ICCs of 0.860 and 0.726, respectively.
With the use of a commercial 3T MR system, TVWA, TLA, and wall thickness measurements of the carotid artery can be assessed with good reproducibility.
使用3T磁共振成像（MRI）检查颈动脉尺寸测量的可重复性。
10名健康志愿者分两次接受三次扫描，以评估总血管壁面积（TVWA）、总管腔面积（TLA）以及最小（MinT）和最大（MaxT）血管壁厚度。在商用3T系统上使用双反转恢复（IR）快速梯度回波（FGRE）序列。第一次就诊时对受试者进行两次扫描。第三次扫描至少在四天后进行。一名观察者对所有扫描进行追踪，另一名观察者对第一次扫描系列进行重新追踪。
考虑到所有三次扫描，TVWA的组内相关系数（ICC）为0.994。观察者间的ICC为0.984。TLA扫描之间的一致性显示ICC为0.982，观察者间ICC为0.998。对于MinT和MaxT，计算出的ICC分别为0.843和0.935，观察者间ICC分别为0.860和0.726。
使用商用3T MR系统，可以很好地重复评估颈动脉的TVWA、TLA和血管壁厚度。
