摘要
目的 :评价磁共振胆管成像 (MRC)三维原始图 (简称为原始图 )与 3D最大强度投影 (MIP)重建图像 (简称为MIP图 )在胆囊结石及胆总管结石中的应用价值。方法 :对 42例明确诊断为胆囊或胆总管结石的患者行 3DFSE扫描 ,获得原始图后 ,经工作站行靶最大强度投影 (MIP)重建得到三维立体图。两位有经验的放射学医师对图像进行分析 ,在病变的显示与否上取得一致。然后 ,对原始图及MIP图对结石的显示率进行统计学处理。结果 :在胆总管结石的显示上 ,原始图及MIP的显示率分别为 93 .3 3 %和 86.67% ,两者差异无显著性意义 (P >0 .0 5 ) ;而对于胆囊结石 ,显示率分别为97.0 6%和 2 3 .5 3 % ,两者间差异存在显著性意义 (P <0 .0 5 )。结论 :原始图及MIP图在显示胆总管结石上 ,两者具有同样较高的临床价值 ,而在显示胆囊结石上 。
Object:To evaluate the application of 3D FSE source image and maxium intensity projection (MIP) image in demonstration of cholecystolithiasis and choledocholithiasis.Mehtods:Forty two patients with choledocholithiasis and cholecystolithiasis or both were studied with 3D FSE sequence,then 3D source images were processed to MIP using a targeted MIP algorithm at workstation.The studies were randomized for interpretation by two experienced radiologists.The sensitivity of source image and MIP image was calculated and compared.Results:Common ductal stones were revealed with source images and MIP images in 14 (93.33%) and 13 patients(86.67%)( P >0.5),respectively.The difference of sensitivities between the two methods was not significant.In cholecystolithiasis,the sensitivity was 97.06% and 23.53%( P <0.05) for source and MIP images,respectively.The sensitivity of source images was significantly higher than that of MIP images.Conclusion:Our results indicate that source images and MIP images have similar value in detecting choledocholithiasis.But for the detection of cholecystolithiasis,source images are significantly more sensitive than MIP images.
出处
《放射学实践》
2003年第8期595-597,共3页
Radiologic Practice
关键词
胆囊
胆总管结石
MRC:3D原始图
MIP图
对比研究
Maximum intensity projection (MIP)
Choledocholithiasis
Cholecystolithiasis
Magnetic resonance cholangiography (MRC)
