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首页> 外文期刊>Skeletal radiology >Optimal 3-T MRI for depiction of the finger A2 pulley: comparison between T1-weighted, fat-saturated T2-weighted and gadolinium-enhanced fat-saturated T1-weighted sequences.
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Optimal 3-T MRI for depiction of the finger A2 pulley: comparison between T1-weighted, fat-saturated T2-weighted and gadolinium-enhanced fat-saturated T1-weighted sequences.

机译：描绘手指A2滑轮的最佳3-T MRI：T1加权，脂肪饱和T2加权和g增强的脂肪饱和T1加权序列之间的比较。

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OBJECTIVE: To compare three spin-echo sequences, transverse T1-weighted (T1WI), transverse fat-saturated (FS) T2-weighted (T2WI), and transverse gadolinium-enhanced (Gd) FS T1WI, for the visualisation of normal and abnormal finger A2 pulley with magnetic resonance (MR) imaging at 3 tesla (T). MATERIALS AND METHODS: Sixty-three fingers from 21 patients were consecutively investigated. Two musculoskeletal radiologists retrospectively compared all sequences to assess the visibility of normal and abnormal A2 pulleys and the presence of motion or ghost artefacts. RESULTS: Normal and abnormal A2 pulleys were visible in 94% (59/63) and 95% (60/63) on T1WI sequences, in 63% (40/63) and 60% (38/63) on FS T2WI sequences, and in 87% (55/63) and 73% (46/63) on Gd FS T1WI sequences when read by the first and second observer, respectively. Motion and ghost artefacts were higher on FS T2WI sequences. Seven among eight abnormal A2 pulleys were detected, and were best depicted with Gd FS T1WI sequences in 71% (5/7) and86% (6/7) by the first and the second observer, respectively. CONCLUSION: In 3-T MRI, the comparison between transverse T1WI, FS T2WI, and Gd FS T1WI sequences shows that transverse T1WI allows excellent depiction of the A2 pulley, that FS T2WI suffers from a higher rate of motion and ghost artefacts, and transverse Gd FS T1WI is the best sequence for the depiction of abnormal A2 pulley.
机译：目的：比较三个自旋回波序列，横向T1加权（T1WI），横向脂肪饱和（FS）T2加权（T2WI）和横向g增强（Gd）FS T1WI，以观察正常和异常手指A2滑轮在3特斯拉（T）处具有磁共振（MR）成像。材料与方法：连续研究了21例患者的63根手指。两位肌肉骨骼放射科医生对所有序列进行了回顾性比较，以评估正常和异常A2滑轮的可见性以及运动或幻影伪影的存在。结果：在T1WI序列上，正常和异常的A2滑轮可见94％（59/63）和95％（60/63），在FS T2WI序列上可见63％（40/63）和60％（38/63），当分别由第一和第二位观察者读取时，分别占Gd FS T1WI序列的87％（55/63）和73％（46/63）。 FS T2WI序列上的运动伪影较高。在八个异常的A2带轮中检测到七个，第一和第二个观察者分别以71％（5/7）和86％（6/7）的Gd FS T1WI序列进行了最佳描绘。结论：在3-T MRI中，横向T1WI，FS T2WI和Gd FS T1WI序列之间的比较表明，横向T1WI可以很好地描绘A2滑轮，FS T2WI的运动和重影伪影较高，而横向Gd FS T1WI是描述异常A2皮带轮的最佳顺序。

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