磁共振BLADE技术在肝脏成像中的临床应用

目的：探讨肝脏成像中磁共振BLADE技术的临床应用价值。方法：2012年5月-2013年5月期间共90例志愿者，采用数字抽取法随机分为三组，扫描序列分别是：A组：T2WI＋FS＋Trigger，K空间填充100％；B组：T2WI＋FS＋Trigger＋BLADE，K空间填充100％；C组：T2WI＋FS＋Trigger＋BLADE，K空间填充200％。对不同序列图像伪影评分及正常肝脏实质信噪比（SNR）进行统计学分析。结果：正常肝脏三组伪影评分有明显统计学差异（F=11．037，P〈0．001），A组伪影统计学上多于B组及C组（P值分别为0．003及0．0012）；正常肝脏三组SNR有明显统计学差异（F=11．037，P〈0．001），A组统计学上明显低于B组及C组（P值分别为0．031及0．023）。结论：BLADE技术的应用，可减少肝脏MRI影像伪影，提高影像质量。

Clinical application of magnetic resonance BLADE technology in liver imaging

Objective： To investigate the clinical value of BLADE sequence in MRI of liver. Methods： Ninty volunteers were enrolled during the period of May 2012 to May 2013. All subjects were randomly divided into three groups with digital extraction method： Group A, T2WI＋FS＋Trigger and K space with 100% filling. Group B： T2WI＋FS＋Trigger＋BLADE and K space with 100% filling. Group C： T2WI＋FS＋Trigger＋BLADE and K space with 200% filling. Image artifacts and signal to noise ratio （SNR） of normal liver parenchyma were statistically analyzed among different sequences. Results： Imaging artifacts scores of normal liver reached statistically significant difference among three groups （F=11.037, P〈0.001）. Imaging artifacts scores of normal liver in A group was statistiCally higher than group B and group C （P=0.003 and P=0.001 2 respectively）; SNR of normal liver reached statistically significant difference among three groups（F=11.037, P〈0.001）. SNR of normal liver in A group was statistically lower than group B and group C（P=0.031 and P=0.023 respectively）. Conclusion： BLADE technology can reduce artifacts in MR1 of liver and improve its image quality.