Lee Sungwon, Jee Won-Hee, Jung Joon-Yong, Lee So-Yeon, Ryu Kyeung-Sik, Ha Kee-Yong
Department of Radiology, Seoul St Mary's Hospital, School of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Department of Radiology, Seoul St Mary's Hospital, School of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
Acta Radiol. 2015 Feb;56(2):174-81. doi: 10.1177/0284185114524196. Epub 2014 Feb 19.
Three-dimensional (3D) fast spin-echo sequence with variable flip-angle refocusing pulse allows retrospective alignments of magnetic resonance imaging (MRI) in any desired plane.
To compare isotropic 3D T2-weighted (T2W) turbo spin-echo sequence (TSE-SPACE) with standard two-dimensional (2D) T2W TSE imaging for evaluating lumbar spine pathology at 3.0 T MRI.
Forty-two patients who had spine surgery for disk herniation and had 3.0 T spine MRI were included in this study. In addition to standard 2D T2W TSE imaging, sagittal 3D T2W TSE-SPACE was obtained to produce multiplanar (MPR) images. Each set of MR images from 3D T2W TSE and 2D TSE-SPACE were independently scored for the degree of lumbar neural foraminal stenosis, central spinal stenosis, and nerve compression by two reviewers. These scores were compared with operative findings and the sensitivities were evaluated by McNemar test. Inter-observer agreements and the correlation with symptoms laterality were assessed with kappa statistics.
The 3D T2W TSE and 2D TSE-SPACE had similar sensitivity in detecting foraminal stenosis (78.9% versus 78.9% in 32 foramen levels), spinal stenosis (100% versus 100% in 42 spinal levels), and nerve compression (92.9% versus 81.8% in 59 spinal nerves). The inter-observer agreements (κ = 0.849 vs. 0.451 for foraminal stenosis, κ = 0.809 vs. 0.503 for spinal stenosis, and κ = 0.681 vs. 0.429 for nerve compression) and symptoms correlation (κ = 0.449 vs. κ = 0.242) were better in 3D TSE-SPACE compared to 2D TSE. 3D TSE-SPACE with oblique coronal MPR images demonstrated better inter-observer agreements compared to 3D TSE-SPACE without oblique coronal MPR images (κ = 0.930 vs. κ = 0.681).
Isotropic 3D T2W TSE-SPACE at 3.0 T was comparable to 2D T2W TSE for detecting foraminal stenosis, central spinal stenosis, and nerve compression with better inter-observer agreements and symptom correlation.
具有可变翻转角重聚焦脉冲的三维（3D）快速自旋回波序列可实现磁共振成像（MRI）在任何所需平面的回顾性对齐。
比较各向同性3D T2加权（T2W）涡轮自旋回波序列（TSE-SPACE）与标准二维（2D）T2W TSE成像在3.0 T MRI上评估腰椎病变的效果。
本研究纳入42例因椎间盘突出接受脊柱手术并进行了3.0 T脊柱MRI检查的患者。除了标准的2D T2W TSE成像外，还获取了矢状面3D T2W TSE-SPACE以生成多平面（MPR）图像。由两名阅片者对3D T2W TSE和2D TSE-SPACE的每组MR图像进行腰椎神经孔狭窄、中央椎管狭窄和神经受压程度的独立评分。将这些评分与手术结果进行比较，并通过McNemar检验评估敏感性。用kappa统计量评估观察者间的一致性以及与症状侧别的相关性。
3D T2W TSE和2D TSE-SPACE在检测神经孔狭窄（32个神经孔水平中分别为78.9%和78.9%）、椎管狭窄（42个脊柱水平中分别为100%和100%）和神经受压（59条脊神经中分别为92.9%和81.8%）方面具有相似的敏感性。与2D TSE相比，3D TSE-SPACE的观察者间一致性（神经孔狭窄κ = 0.849对0.451，椎管狭窄κ = 0.809对0.503，神经受压κ = 0.681对0.429）和症状相关性（κ = 0.449对κ = 0.242）更好。与没有斜冠状面MPR图像的3D TSE-SPACE相比，具有斜冠状面MPR图像的3D TSE-SPACE显示出更好的观察者间一致性（κ = 0.930对κ = 0.681）。
3.0 T的各向同性3D T2W TSE-SPACE在检测神经孔狭窄、中央椎管狭窄和神经受压方面与2D T2W TSE相当，且具有更好的观察者间一致性和症状相关性。
