• 医学文献
  • 知识库
  • 评价分析
  • 全部
  • 中外期刊
  • 学位
  • 会议
  • 专利
  • 成果
  • 标准
  • 法规
  • 临床诊疗知识库
  • 中医药知识库
  • 机构
  • 作者
热搜词:
换一批
论文 期刊
取消
高级检索

检索历史 清除

医学文献 >>
  • 全部
  • 中外期刊
  • 学位
  • 会议
  • 专利
  • 成果
  • 标准
  • 法规
知识库 >>
  • 临床诊疗知识库
  • 中医药知识库
评价分析 >>
  • 机构
  • 作者
热搜词:
换一批

MR场强及设备类型对健康人腹部实质脏器表观扩散系数值的影响

MR influence of different magnetic field and different scanner with same magnetic field on apparent diffusion coefficient of abdominal organs in healthy volunteers

摘要:

目的 探讨1.5T与3.0T及不同的1.5T设备测量健康志愿者肝、脾及胰实质ADC值的稳定性.方法 利用美国GE1.5T、德国Siemens1.5 T及荷兰Philips 3.0 T MR仪对33名健康志愿者行腹部DWI,b值为0及600s/mm2.测量肝、脾、胰(分为头、体、尾)的ADC值.比较各脏器在2台不同1.5T设备及3.0与1.5T设备所测得ADC值的差异.数据分析采用配对t检验.结果 在GE1.5T、Siemens 1.5 T与Philips 3.0 T设备上,肝的平均ADC值分别为(1.56±0.10) ×10-3、(1.67±0.15)×10-3及(1.35±0.12)× 10-3 mm2/s;脾的平均ADC值分别为(0.96±0.10)× 10-3、(0.98-±0.11) ×10-3及(0.81±0.14)×10-3 mm2/s;胰头的平均ADC值分别为(2.09 ±0.27)×10-3、(2.20±0.21)×10-3及(2.05 ±0.27)× 10-3 mm2/s;胰体的平均ADC值分别为(2.03±0.27)×10-3、(2.09±0.30)× 10-3及(1.76 ±0.25)×10-3 mm2/s;胰尾的平均ADC值分别为(1.88 ±0.28)×10-3、(1.88±0.27)×10-3及(1.56±0.27)×10-3 mm2/s.不同场强下肝、脾、胰体及胰尾的ADC值差异有统计学意义(GE1.5 T与Philips 3.0 T相比,肝:t=11.073,P<0.01;脾:t=4.143,P<0.01;胰体:t=4.677,P<0.01;胰尾:t=5.356,P<0.01;Siemens 1.5 T与Philips 3.0 T相比,肝:t=12.795,P<0.01;脾:t=5.376,P <0.01;胰体:t=5.174,P<0.01;胰尾:t=4.648,P<0.01);而胰头的ADC值差异无统计学意义(GE 1.5 T与Philips 3.0 T相比:t=0.340,P>0.05;Siemens 1.5 T与Philips 3.0 T相比:t=1.349,P>0.05).在不同的1.5T设备上,肝的平均ADC值差异有统计学意义(t=-4.563,P<0.01);而脾(t=-0.732,P>0.05)、胰头(t=-0.879,P>0.05)、胰体(t=-1.020,P>0.05)、胰尾(t=0.054,P>0.05)的平均ADC值差异均无统计学意义.结论 在不同场强及不同1.5T设备上,对腹部实质脏器的ADC值测量部分存在影响.

更多
abstracts:

Objective To evaluate the reproducibility of ADC measurements at 1.5 vs 3.0 T and at 1.5 T of different scanners in liver,spleen and pancreas of healthy volunteers.Methods Abdominal DWI were performed on 33 healthy volunteers by using GE 1.5 T,Siemens 1.5 T and Philips 3.0 T MR scanners.The mean ADC values of liver,spleen,pancreatic head,body,and tail were calculated.The ADC data were analyzed by using paired-sample t tests.Results The mean ADC of liver at GE 1.5 T,Siemens 1.5T and Philips 3.0 T were (1.56 ±0.10) ×10-3,(1.67 ±0.15) ×10-3 and(1.35 ±0.12) ×10-3 mm2/s,spleen were (0.96±0.10) × 10 3,(0.98 ±0.11) ×10-3and(0.81 ±0.14) × 10-3 mm2/s,pancreatic head were (2.09 ± 0.27) × 10-3,(2.20 ± 0.21) × 10-3 and (2.05 ± 0.27) × 10-3 mm2/s,pancreatic body were (2.03 ± 0.27) × 10-3,(2.09 ± 0.30) × 10-3 and (1.76 ± 0.25) × 10-3 mm2/s,pancreatic tail were (1.88 ± 0.28) × 10-3,(1.88 ± 0.27) × 10-3 and (1.56 ± 0.27) × 10-3 mm2/s,respectively.From the aspect of different field strength MR scanners,there were significant differences in mean ADC of liver (t =11.073,P <0.01 in GE 1.5 T vs Philips 3.0 T; t =12.795,P <0.01 in Siemens 1.5 T vs Philips 3.0 T),spleen (t =4.143,P < 0.01 in GE 1.5 T vs Philips 3.0 T; t =5.376,P < 0.01 in Siemens 1.5 T vs Philips 3.0 T),pancreatic body (t =4.677,P < 0.01 in GE 1.5 T vs Philips 3.0 T; t =5.174,P <0.01 in Siemens 1.5 T vs Philips 3.0 T) and tail (t =5.356,P <0.01 in GE 1.5 T vs Philips 3.0 T; t =4.648,P <0.01 in Siemens 1.5 T vs Philips 3.0 T),but there were no significant differences in mean ADC of pancreatic head (t =0.340,P > 0.05 in GE 1.5 T vs Philips 3.0 T; t =1.349,P > 0.05 in Siemens 1.5 T vs Philips3.0 T).From the aspect of different 1.5 T MR scanners,there were significant differences in mean ADC of liver (t =-4.563,P < 0.01),but there were no significant differences in mean ADC of spleen (t =-0.732,P > 0.05),pancreatic head (t =-0.879,P > 0.05),body (t =-1.020,P >0.05) and tail (t =0.054,P > 0.05).Conclusion Between 1.5 T and 3.0 T MR scanners,there were significant differences in mean ADC of liver,spleen,pancreatic body and tail,but there were no significant differences in mean ADC of pancreatic head.At different 1.5 T MR scanners,there were significant differences in mean ADC of liver,but there were no significant differences in mean ADC of spleen,pancreatic head,body and tail.

More
作者: 高佳音 [1] 张加成 [2] 杨正汉 [1] 李金凝 [3] 陈敏 [1] 周诚 [1]
期刊: 《中华放射学杂志》2013年47卷2期 142-146页 MEDLINEISTICPKUCSCD
栏目名称: 腹部放射学
DOI: 10.3760/cma.j.issn.1005-1201.2013.02.010
发布时间: 2013-04-19
基金项目:
北京市自然科学基金资助 北京市科委"首都特色临床医学应用发展"资助项目
  • 浏览:469
  • 下载:137

加载中!

相似文献

  • 中文期刊
  • 外文期刊
  • 学位论文
  • 会议论文

加载中!

加载中!

加载中!

加载中!

扩展文献

特别提示:本网站仅提供医学学术资源服务,不销售任何药品和器械,有关药品和器械的销售信息,请查阅其他网站。

  • 客服热线:4000-115-888 转3 (周一至周五:8:00至17:00)

  • |
  • 客服邮箱:yiyao@wanfangdata.com.cn

  • 违法和不良信息举报电话:4000-115-888,举报邮箱:problem@wanfangdata.com.cn,举报专区

官方微信
万方医学小程序
new翻译 充值 订阅 收藏 移动端

官方微信

万方医学小程序

使用
帮助
Alternate Text
调查问卷