腹部磁共振检查技术规范化与临床应用(1)
摘要：目的 实施腹部磁共振扫描规范化技术方案，分析临床应用后获得图像并评价其临床意义。方法 使用Signa HDe 1.5T 磁共振设备，8通道体线圈，呼吸门控。选择2015年1月1日作为时间节点，对此后开展的腹部磁共振检查实施规范化扫描，随机选取其中的30例作为A组(研究组)，2014年未实施规范化扫描病例随机选取30例作为B组(对照组)，进行图像质量比较分析。结果 对两组数据使用NPar软件进行统计分析，采用Mann-Whitney检验，两者间空间分辨率、均匀度、伪影指标无显著差异，但对比度指标存在显著差异(P<0.05)，实施规范化扫描后获得的图像质量对比度明显优于对准组。结论 腹部磁共振检查技术规范化可优化图像质量，尤其图像的对比度得到显著提高，有利于提高微小病变的检出率。同时灵活应用针对病变需要的扫描序列和扫描定位方法，方能对病变显示、明确诊断提供最大帮助。
关键词：磁共振；规范化扫描；腹部；临床应用
中图分类号：R445.2 文献标识码：A 文章编号：1006-1959(2017)17-0177-03 Standardization and Clinical Application of Abdominal Magnetic Resonance Imaging
, 百拇医药
WU Hui-hui，FENG Ke，GAO Ling
(Department of Medical Imaging，Nanjing Traditional Chinese Medicine Hospital，Nanjing 210000，Jiangsu，China)
Abstract：0bjective To implement the abdominal MRI scan normalization technique，analyze the clinical application and obtain the image and evaluate its clinical significance.Methods Using Signa HDe 1.5T magnetic resonance equipment，8 channel body coil，respiratory gating.In January 1，2015，a standardized scan of abdominal magnetic resonance examination was performed，and 30 of them were randomly selected as the group A(study group)，30 cases were randomly selected as group B(control group)without standardized scanning cases in 2014，and the image quality was compared and analyzed.Results NPar software was used for statistical analysis of the two sets of data，using Mann-Whitney test，between the spatial resolution and uniformity，the artifact index had no significant difference，but there are significant differences in contrast index(P<0.05)，for the implementation of standardized scanning image quality after contrast was significantly better than the control group.Conclusion Abdominal MRI technology standardization can optimize the quality of the image，especially the contrast of the image has been significantly improved，can improve the detection rate of small lesions.At the same time，the flexible application of scanning sequence and scanning location method for lesions can provide the greatest help for the display of lesions and for definite diagnosis.
, 百拇医药
Key words：Magnetic resonance imaging；Normalized scan；Abdomen；Clinical application
腹部臟器病变的影像学检查主要有B超、普通X线、CT及磁共振等检查方法。B超诊断具有方便、快捷、无辐射、低费用的优点，因而广泛应用于体检，起到器官组织异常、疾病发现的侦查作用，但囿于其成像分辨力仍有待进一步提高，临床诊疗中需要CT及磁共振提供更精确的定位、定性诊断。普通X线诊断主要应用于腹部急性病变，如立、卧位腹部平片用于诊断肠梗阻、胃肠道穿孔、尿路结石。腹部CT检查具有检查速度快，分辨率高的特点，特别近年CT成像宽体探测器技术、双源CT技术发展，能谱成像技术、高清晰度技术、高级后处理技术、扫描驱动技术、大范围灌注技术、低剂量技术、迭代技术等新技术的高速发展，使得CT腹部影像诊断得到极大发展。而腹部磁共振检查具有无辐射损伤、多参数成像、软组织分辨率高、功能成像等CT检查不具备的技术特点，在腹部脏器病变诊断中发挥重要作用。然而临床实际工作中，腹部磁共振成像效果也易受到各种理化因素影响，如扫描前准备、患者配合、扫描技术的选择应用、操作者技术水平等都对最终获得的图像质量具有决定性作用。临床工作中实施腹部磁共振扫描技术规范化，才能发挥出磁共振应用于腹部病变影像诊断的优势，获得最优图像满足临床诊断需要。, http://www.100md.com(吴卉卉 冯克 高玲)
关键词：磁共振；规范化扫描；腹部；临床应用
中图分类号：R445.2 文献标识码：A 文章编号：1006-1959(2017)17-0177-03 Standardization and Clinical Application of Abdominal Magnetic Resonance Imaging
, 百拇医药
WU Hui-hui，FENG Ke，GAO Ling
(Department of Medical Imaging，Nanjing Traditional Chinese Medicine Hospital，Nanjing 210000，Jiangsu，China)
Abstract：0bjective To implement the abdominal MRI scan normalization technique，analyze the clinical application and obtain the image and evaluate its clinical significance.Methods Using Signa HDe 1.5T magnetic resonance equipment，8 channel body coil，respiratory gating.In January 1，2015，a standardized scan of abdominal magnetic resonance examination was performed，and 30 of them were randomly selected as the group A(study group)，30 cases were randomly selected as group B(control group)without standardized scanning cases in 2014，and the image quality was compared and analyzed.Results NPar software was used for statistical analysis of the two sets of data，using Mann-Whitney test，between the spatial resolution and uniformity，the artifact index had no significant difference，but there are significant differences in contrast index(P<0.05)，for the implementation of standardized scanning image quality after contrast was significantly better than the control group.Conclusion Abdominal MRI technology standardization can optimize the quality of the image，especially the contrast of the image has been significantly improved，can improve the detection rate of small lesions.At the same time，the flexible application of scanning sequence and scanning location method for lesions can provide the greatest help for the display of lesions and for definite diagnosis.
, 百拇医药
Key words：Magnetic resonance imaging；Normalized scan；Abdomen；Clinical application
腹部臟器病变的影像学检查主要有B超、普通X线、CT及磁共振等检查方法。B超诊断具有方便、快捷、无辐射、低费用的优点，因而广泛应用于体检，起到器官组织异常、疾病发现的侦查作用，但囿于其成像分辨力仍有待进一步提高，临床诊疗中需要CT及磁共振提供更精确的定位、定性诊断。普通X线诊断主要应用于腹部急性病变，如立、卧位腹部平片用于诊断肠梗阻、胃肠道穿孔、尿路结石。腹部CT检查具有检查速度快，分辨率高的特点，特别近年CT成像宽体探测器技术、双源CT技术发展，能谱成像技术、高清晰度技术、高级后处理技术、扫描驱动技术、大范围灌注技术、低剂量技术、迭代技术等新技术的高速发展，使得CT腹部影像诊断得到极大发展。而腹部磁共振检查具有无辐射损伤、多参数成像、软组织分辨率高、功能成像等CT检查不具备的技术特点，在腹部脏器病变诊断中发挥重要作用。然而临床实际工作中，腹部磁共振成像效果也易受到各种理化因素影响，如扫描前准备、患者配合、扫描技术的选择应用、操作者技术水平等都对最终获得的图像质量具有决定性作用。临床工作中实施腹部磁共振扫描技术规范化，才能发挥出磁共振应用于腹部病变影像诊断的优势，获得最优图像满足临床诊断需要。, http://www.100md.com(吴卉卉 冯克 高玲)