头颈部区域磁共振成像中的脂肪抑制：两点DIXON技术是否优于频谱脂肪抑制？
Fat suppression in magnetic resonance imaging of the head and neck region: is the two-point DIXON technique superior to spectral fat suppression?
作者信息
Wendl Christina M, Eiglsperger Johannes, Dendl Lena-Marie, Brodoefel Harald, Schebesch Karl-Michael, Stroszczynski Christian, Fellner Claudia
机构信息
1 Department of Radiology, University Hospital Regensburg , Regensburg , Germany.
2 numares AG , Regensburg , Germany.
出版信息
Br J Radiol. 2018 May;91(1085):20170078. doi: 10.1259/bjr.20170078. Epub 2018 Feb 23.
Abstract
OBJECTIVE
The aim of our study was to systematically compare two-point Dixon fat suppression (FS) and spectral FS techniques in contrast enhanced imaging of the head and neck region.
METHODS
Three independent readers analysed coronal T weighted images recorded after contrast medium injection with Dixon and spectral FS techniques with regard to FS homogeneity, motion artefacts, lesion contrast, image sharpness and overall image quality.
RESULTS
85 patients were prospectively enrolled in the study. Images generated with Dixon-FS technique were of higher overall image quality and had a more homogenous FS over the whole field of view compared with the standard spectral fat-suppressed images (p < 0.001). Concerning motion artefacts, flow artefacts, lesion contrast and image sharpness no statistically significant difference was observed.
CONCLUSION
The Dixon-FS technique is superior to the spectral technique due to improved homogeneity of FS and overall image quality while maintaining lesion contrast. Advances in knowledge: T with Dixon FS technique offers, compared to spectral FS, significantly improved FS homogeneity and over all image quality in imaging of the head and neck region.
摘要
目的
我们研究的目的是在头颈部区域的对比增强成像中系统地比较两点 Dixon 脂肪抑制（FS）和频谱 FS 技术。
方法
三名独立的阅片者分析了使用 Dixon 和频谱 FS 技术在注射造影剂后记录的冠状位 T 加权图像，评估指标包括 FS 均匀性、运动伪影、病变对比度、图像清晰度和整体图像质量。
结果
85 例患者前瞻性纳入本研究。与标准频谱脂肪抑制图像相比，Dixon-FS 技术生成的图像整体图像质量更高，在整个视野范围内 FS 更均匀（p < 0.001）。在运动伪影、流动伪影、病变对比度和图像清晰度方面，未观察到统计学上的显著差异。
结论
Dixon-FS 技术由于 FS 均匀性和整体图像质量的改善而优于频谱技术，同时保持病变对比度。知识进展：与频谱 FS 相比，采用 Dixon FS 技术的 T 在头颈部区域成像中可显著提高 FS 均匀性和整体图像质量。
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