学术论文

      自制水模在3.0T MRI颈部脂肪抑制序列扫描中的价值

      The value of self-made water phantom for 3.0T MRI cervical fat-suppression sequence scan

      摘要:
      目的:探讨自制水模在3.0T MRI颈部频率选择饱和法脂肪抑制(FS)序列扫描中的应用价值.方法:通过常规及水模序列,用相同参数对30例志愿者颈部进行FS快速自旋回波(TSE)T1WI和FS TSE T2WI扫描,对所得图像进行主观及客观评价,并比较分析.结果:主观评价法中,FS TSE T1WI分级在常规组和水模组分别为0级:1例和30例、1级:4例和0例、2级:8例和0例、3级:17例和0例,P均<0.05;FS TSE T2WI分级分别为0级:0例和1例、1级:1例和29例、2级:8例和0例、3级:21例和0例,P均<0.05.客观评价法中,FS TSE T1WI在下颌角、环状软骨、胸锁关节水平胸锁乳突肌信噪比中值在常规组和水模组分别为25.00(4.53,72.65)和103.72(99.77,108.04)、9.05(3.45,60.32)和118.80(106.59,123.94)、19.00(3.35,61.21)和101.74(87.38,110.29),P均<0.05;FS TSE T2WI像上分别为8.30(3.63,13.91)和15.26(12.68,17.50)、3.84(2.86,11.95)和15.06(12.76,16.88)、5.06(2.71,13.40)和14.46(11.47,15.68),P均<0.05.结论:在3.0T MRI颈部FS序列扫描中,应用水模可明显提高成像质量,并且操作简单,易于推广.
      Abstract:
      Objective:To investigate the application value of self-made water phantom in 3.0T MRI cervical frequency selective saturated fat-suppression sequence scan.Methods:Necks of 30 volunteers were treated with FS TSE(rapid spin echo)T1WI and FS TSE T2WI scan by same parameters of routine and water phantom sequences,respectively.The obtained images were subjective and objectively evaluated for comparative analysis.Results:During subjective evaluation,FS TSE T1WI grading were 1 case and 30 cases at grade 0,4 cases and 0 case at grade 1,8 cases and 0 case at grade 2,17 cases and 0 case at grade 3 in routine group and water phantom group,respectively(all P<0.05).FS TSE T2WI grading were 0 case and 1 case at grade 0,1 case and 29 cases at grade 1,8 cases and 0 case at grade 2,21 cases and 0 case at grade 3 in routine group and water phantom group,respectively (all P<0.05).During objective evaluation,signal to noise ratio of FS TSE T1WI at mandibular angle,cricoid and sternocleidomastoid muscle at sternoclavicular joint level were 25.00 (4.53,72.65) and 103.72 (99.77,108.04),9.05(3.45,60.32) and 118.80(106.59,123.94),19.00(3.35,61.21) and 101.74(87.38,110.29) in routine group and water phantom group,respectively (all P<0.05);signal to noise ratio of FS TSE T1WI were 8.30 (3.63,13.91) and 15.26 (12.68,17.50),3.84(2.86,11.95) and 15.06(12.76,16.88),5.06(2.71,13.40) and 14.46(11.47,15.68) in routine group and water phantom group,respectively (all P<0.05).Conclusion:For 3.0T MRI cervical FS sequence scan,water phantom can obviously improve image quality,be operated simply and easy to popularize.
      Author: WANG Rong ZHU Da-rong HAN Zhi-jiang DING Jin-wang
      作者单位: 杭州市第一人民医院放射科,浙江杭州,310006
      刊 名: 中国临床医学影像杂志 ISTICPKU
      年,卷(期): 2017, 28(3)
      分类号: R653 R445.2
      关键词: 知识脉络磁共振成像知识脉络
      在线出版日期: 2017年4月12日