多排螺旋CT薄层扫描及窗技术在急性胰腺炎诊断中的作用  

Role of thin-slice multidetector spiral CT scan and window technology in the diagnosis of acute pancreatitis

作　　者：章辉庆[1] 董修明[1] 邱晓晖[1] 穆玲[1] 

机构地区：[1]安徽省亳州市人民医院影像中心,安徽亳州236800

出　　处：《安徽医药》2013年第2期277-279,共3页Anhui Medical and Pharmaceutical Journal

摘　　要：目的探讨多排螺旋CT薄层扫描及窗技术在急性胰腺炎诊断中的作用。方法搜集经临床、实验室检查证实的70例急性胰腺炎患者的影像资料,由两名高年资影像诊断医师采取盲法进行软读片,同时采用常规腹部图像7 mm层厚、1 mm层厚及适当调节窗宽、窗位技术观察胰腺周围改变,以胰周脂肪间隙模糊、胰周积液、肾前筋膜增厚等为阳性指征,将1 mm层厚及适当调节窗宽、窗位技术组中阳性率的诊断结果分别与常规组进行配对χ2检验。结果经比较,1 mm层厚、窗宽100～200HU、窗位-40～-20 HU组阳性率最高,且与常规组诊断结果比较阳性率差异有统计学意义(χ2=27.52,P=0.000)。结论在常规腹部窗宽、窗位的基础上适当缩窄窗宽、降低窗位加上结合1 mm层厚图像进行观察,有利于发现急性胰腺炎胰腺周围的阳性征象及提高CT在临床诊断急性胰腺炎中的价值。Objective To discuss the role of thin-slice multidetector spiral CT scan and window technology in the diagnosis of acute pan- creatitis. Methods 70 cases of acute pancreatitis confirmed by clinical, laboratory examination were collected. The CT images of conven- tional abdominal image with thickness of 7 ram, 1 mm and adjusted window width, window level were evaluated by two senior doctors. The CT features, such as obscure peripancreatic fat tissue, effusion surrounding pancreas, thickening of renal fascia were considered as positive features of acute pancreatitis. Results The positive rate of acute pancreatitis was higher under thickness of 1 ram, adjusted window width 100 - 200 HU, window level - 40 - - 20 HU than that under conventional window width and window level（x2 = 13.76 ,P 〈 0.05）. Con- clusion Adjusting window width and window level with thickness Of 1 mm image was helpful to show more positive features of acute pancreatitis,which improves the value of CT in clinical diagnosis of acute pancreatitis.

关 键 词：窗技术 薄层扫描 体层摄影术 X线计算机 急性胰腺炎 

分 类 号：R816.5[医药卫生—放射医学]