摘要
目的对比高分辨率与低分辨率三维快速自转回波成像技术(3D-Sampling Perfection with Application-Optimized Contrasts by using Different Flip Angle Evolutions,3D-SPACE)序列在磁共振胰胆管水成像(Magnetic Resonance Cholangiopancreatography,MRCP)中的应用效果。方法使用Siemens Avanto 1.5T磁共振扫描仪对44名受检者行胰胆管水成像,同时采用3D-SPACE的高分辨率与低分辨率序列扫描,两名高年资医师对成像效果进行评价和评分,评分的结果采用秩和校验进行统计学分析。结果高分辨率3D-SPACE原始图像对微小病变显示更清晰;低分辨率3D-SPACE成像时间更快;最大密度投影(Maximum Intensity Projection,MIP)重建图像质量无统计学差异(胆总管显示评分差异:P=0.899,左、右肝内胆管、主胰管显示评分差异:P=0.623)。结论对于配合程度较差的受检者应用低分辨率3D-SPACE更易获得较理想图像。
Objective To compare the application effects of 3 dimensional sampling perfertion with application optimized contrasts using different flip angle evolutions (3D-SPACE) sequence under the status of high-resolution and low-resolution in Magnetic Resonance Cholangiopancreatography (MRCP)examination. Methods Fortyfourexaminees were conducted MRCP scanning with Siemens Avanto 1.5T magnetic resonance imaging (MRI) scanner. In such examination, examinees were scanned by adopting 3DSPACEsequence with highresolutionand lowresolutionmode respectively. Then the imaging effects in the two resolution models were evaluated and scored by two senior radiologists separately.Later, the scoring results were analyzed statistically with the Wilcoxon rank sum test. Results Minimal changes were displayed more clearly in original image with highresolution3DSPACEsequence, whilst imaging time of lowresolution3DSPACEsequence was less. There was no significant difference in image quality with Maximum Intensity Projection (MIP) reconstruction technology between the two resolution models (score difference in delineating common bile duct: P=0.899, score difference in delineating right and left hepatic duct as well as main pancreatic duct: P=0.623). Conclusion For examinees with poor cooperation, low-resolution 3D-SPACE sequence was easier to get qualified images.
作者
肖建明
彭涛
王宗勇
王娜
XIAO Jian-ming;PENG Tao;WANG Zong-yong;WANG Na(Department of Radiology, Affiliated Hospital & Clinical Medical College of Chengdu University, Chengdu Sichuan 610081, China)
出处
《中国医疗设备》
2017年第3期77-79,102,共4页
China Medical Devices
关键词
磁共振胰胆管水成像
可变翻转角快速自旋回波
最大密度投影
分辨率
3DSPACE
magnetic resonance cholangiopancreatography
sampling perfertion with application optimized contrasts using different flip angle evolutions
maximum intensity projection
resolution ratio
3D-SPACE
