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首页> 外文期刊>Skeletal radiology >Short tau inversion recovery and three-point Dixon water-fat separation sequences in acute traumatic bone fractures at open 0.35 tesla MRI.
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Short tau inversion recovery and three-point Dixon water-fat separation sequences in acute traumatic bone fractures at open 0.35 tesla MRI.

机译：在开放0.35特斯拉MRI的急性创伤性骨折中的短tau反转恢复和三点Dixon水脂肪分离序列。

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OBJECTIVE: Fat suppression can be used to improve the diagnostic confidence in traumatic bone fractures of the extremities. We compared a three-point Dixon "sandwich" water-fat separation (WFS) sequence, resulting in a water-only and a fat-only image set after one excitation, with the STIR sequence on an open 0.35 T superconductive MR system.DESIGN AND PATIENTS: T1-weighted, STIR (2000/40 [TR/TE]), and WFS (2000/36 [TR/TE]) MR images were prospectively obtained in 27 patients with 40 radiologically diagnosed fractures immediately after first-line treatment. Signal-to-noise (S/N) ratio, contrast-to-noise (C/N) ratio, and bone marrow edema volumes were measured together with qualitative parameters (four-point scale).RESULTS: WFS was significantly superior to STIR in all quantitative parameters (better S/N ratio, P<0.001; better C/N ratio, P<0.001; larger marrow edema, P <0.023; Wilcoxon signed rank test). Visibility of bone marrow edema, visibility of fracture line, and preservation of anatomical details were better with the WFS sequence ( P<0.001, P<0.001, P<0.001, respectively; ANOVA). Fat saturation was rated more homogeneous, however, with the STIR sequence (not significant; P<0.101).CONCLUSION: On the basis of qualitative and quantitative assessments, the three-point Dixon "sandwich" water-fat separation sequence was consistently superior to the STIR sequence in the delineation of traumatic fractures.
机译：目的：抑制脂肪可以提高四肢创伤性骨折的诊断置信度。我们比较了三点狄克逊“三明治”水脂分离（WFS）序列，在一次激发后产生的只有水和只有脂肪的图像集与开放的0.35 T超导MR系统上的STIR序列相比较。和患者：一线治疗后，立即在27例经放射学诊断为骨折的27例患者中获得了T1加权，STIR（2000/40 [TR / TE]）和WFS（2000/36 [TR / TE]）MR图像。测量了信噪比（S / N），对比信噪比（C / N）和骨髓水肿体积以及定性参数（四点量表）。结果：WFS明显优于STIR在所有定量参数中（更好的信噪比，P <0.001;更好的信噪比，P <0.001;更大的骨髓水肿，P <0.023; Wilcoxon符号秩和检验）。使用WFS序列时，骨髓水肿的可见性，骨折线的可见性和保留的解剖结构更好（分别为P <0.001，P <0.001，P <0.001; ANOVA）。脂肪饱和度被评定为更均匀，但是具有STIR序列（不显着; P <0.101）。结论：在定性和定量评估的基础上，三点Dixon“三明治”水脂肪分离序列始终优于STIR序列用于描述外伤性骨折。

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