Clinical value of routine use of thin-section 3D MRI using 3D FSE sequences with a variable flip angle technique for internal derangements of the knee joint at 3T
Clinical value of routine use of thin-section 3D MRI using 3D FSE sequences with a variable flip angle technique for internal derangements of the knee joint at 3T
复制标题
DOI：
10.1016/j.mri.2013.02.003
复制
发表时间：
2013-10-01
影响因子：
2.5
通讯作者：
Terada, Hitoshi
中科院分区：
文献类型：
--
作者：
Kudo, Hideyasu;Inaoka, Tsutomu;Terada, Hitoshi
目的：为了确定常规使用薄层3D MRI的临床价值，使用3D FSE序列与可变翻转角技术的膝关节内部紊乱在3 T。方法和材料：34例患者的34个膝盖怀疑有内部紊乱的膝关节。采用标准的2D MRI方案，包括矢状面PDWI、T1 WI和T2*WI，冠状面脂肪抑制PDWI和轴向脂肪抑制PDWI，层厚3-4 mm，在冠状面采用3DFSE序列，层厚0.6mm，采用可变翻转角技术进行脂肪抑制和水激发PDWI，并在3个主要平面上重建1 mm层厚（3D MRI）。由两名放射科医生独立分析标准2D MRI方案和重新格式化的3D MRI方案（三个矢状面2D序列图像加3D MRI），以确定椎间盘、软骨和韧带中是否存在病变。通过加权kappa系数评估两种MRI方案的观察者间一致性。关于诊断的准确性，根据两个MRI protocols.Results的受试者工作特征曲线（Az值）的面积进行了比较：38个关节病变，39个软骨病变，和20个韧带病变手术检测。两种MRI方案的观察者间一致性（kappa = 0.91-0.98）均非常好，重新格式化的3D MRI方案的趋势略好。与标准的2D MRI方案相比，重新格式化的3D MRI方案检测踝关节、软骨和韧带病变的平均Az值显著更高（p
Purpose: To determine the clinical value of routine use of thin-section 3D MRI using 3D FSE sequences with a variable flip angle technique for internal derangements of the knee joint at 3 T.Method and Materials: Thirty-four knees in 34 patients suspected of having internal derangements of the knee joint were included. Following standard 2D MRI protocol including sagittal PDWI, T1WI and T2*WI, coronal fat-suppressed PDWI, and axial fat-suppressed PDWI with 3-4 mm thicknesses, fat-suppressed and water-excitation PDWI using 3D FSE sequences with a variable flip angle technique with 0.6 mm thickness were obtained in coronal plane and the three major planes with 1 mm thickness (3D MRI) was reformatted. The standard 2D MRI protocol and reformatted 3D MRI protocol (three sagittal 2D sequence images plus 3D MRI) were independently analyzed by two radiologists concerning presence or absence of lesions in the menisci, cartilage, and ligament. Interobserver agreements in both the MRI protocols were assessed by weighted-kappa coefficients. Regarding diagnostic accuracy, areas under the receiver operating characteristic curves (Az values) of both the MRI protocols were compared.Results: Thirty-eight meniscal lesions, 39 cartilage lesions, and 20 ligamentous lesions were surgically detected. Excellent interobserver agreements (kappa = 0.91-0.98) were seen in both the MRI protocols, with a slightly better tendency in the reformatted 3D MRI protocol. Average Az values in detection of the meniscal, cartilage, and ligamentous lesions were significantly higher in the reformatted 3D MRI protocol than in the standard 2D MRI protocol (p