MRI不同序列对骶髂关节软骨成像的比较

发布时间：2018-09-11 17:44

【摘要】：背景:平片及CT不能显示关节软骨的改变,磁共振虽可显示软骨,但常规序列软骨显像效果欠佳,因此若要提高MRI检出软骨病变的能力,序列的优化显得非常重要。目的:比较骶髂关节常用磁共振成像序列,筛选适合骶髂关节软骨MRI最佳成像序列。方法:对45健康志愿者分别行骶髂关节MRI自旋回波T1WI、T2WI、T1-flash-3d-water-cor、T2-me3d-cor和T2-me2d-cor和T1-se-cor-water-fil扫描,比较各个序列显示骶髂关节软骨的清晰度、内部信号变化及软骨表面缺损。结果与结论:自旋回波T1WI和T2WI序列45均显示骶髂关节软骨为一条稍高信号带,关节间隙不清;梯度回波T1-se-cor-water-fil序列45均显示两侧关节面骨皮质与髂侧软骨、骶侧软骨及软骨间隙形成的5条平行线状结构;T2-me3d-cor、T1-flash-3D-water-cor-fil序列45例受检者关节软骨为一条明亮、清晰高信号,与周围骨皮质及骨髓分界非常清晰,但骶侧、髂侧软骨不能够区分。T2-me2d-cor序列37例能显示髂侧、骶侧软骨及软骨间关节间隙,8例分辨不清;弥散成像序列仅部分层面能显示关节软骨,诸结构显示较模糊,信号强度对比不鲜明。结果说明,T1-se-cor-water-fil在关节软骨显示程度、内部信号变化和软骨表面缺损程度等方面明显优于其他序列。T1-flash-3d-water-cor、T2-me3d-cor和T2-me2d-cor对软骨表显示方面优于常规MRI序列,但不如T1-se-cor-water-fil。
[Abstract]:BACKGROUND: Plain film and CT can not show the changes of articular cartilage. Magnetic resonance imaging can show cartilage, but the effect of conventional sequence cartilage imaging is not good. So it is very important to optimize the sequence in order to improve the ability of MRI to detect cartilage lesions. Methods: 45 healthy volunteers were scanned with spin-echo T1WI, T2WI, T1-flash-3d-water-cor, T2-me3d-cor, T2-me2d-cor and T1-se-cor-water-fil respectively. The articular Articular Cartilage articular articular articular articular articular articular articular articular articular articular articular articular articular articular articular articular articular articular articular articular articular articular articular articular articular articul The sacroiliac articular cartilage showed a slightly high signal band with unclear articular space in all 45 cases; the gradient echo T1-se-cor-water-fil sequence 45 showed five parallel linear structures between the bone cortex and iliac cartilage, sacral cartilage and cartilage space on both sides of the articular surface; T2-me3d-cor, T1-flash-3D-water-cor-fil sequence 45 cases of the articular cartilage was a single cartilage. T2-me2d-cor sequence showed 37 cases of iliac, sacral cartilage and interchondral joint space, 8 cases of unclear discrimination; diffusion imaging sequence showed only part of the level of articular cartilage, the structure showed blurred, signal intensity contrast. T1-flash-3d-water-cor, T2-me3d-cor and T2-me2d-cor were superior to conventional MRI sequences in the display of articular cartilage, but not T1-se-cor-water-fil.
【作者单位】：河南省中医院放射科;河南省人民医院影像中心;河南省中医院骨科;
【基金】：河南省科技攻关计划项目(132102310159)~~
【分类号】：R68;R445.2

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