低剂量螺旋CT技术的临床应用_张巍.pdf

2006 16 8 J Med Imagi g Vol. 16 No. 8 2006 CT 1,2 1 张 巍 综述, 郭玉林 审校 ( 1. 2004 750004; 2. 250014) CT , , CT , , CT ; , X : R814. 2 :A : 1006- 9011(2006) 08- 0861- 04 The clinical application of the low- dose CT examination ZHAN G Wei, G UO Yu-lin. Ningxia Med ical Colleg e, Grad 2004 Morster , Yinchuan 750004, China Abstract Low-dose CT exami atio ot o ly assures qua tity of images, but also lowers the level of radiatio while the patie ts ac- cepti g check. It is valuable to lower the radiatio , especialy at the chest, para asal si us a d child e cephalic. This article i troduce the low-dose CT exami atio applied status a d adva ces i the cli ical. Key words Low-dose; Tomography, X-ray computed [ 1] Naidich 1990 CT , , , , , , , , ( WHO) ( IRCP) ( IOMP) X , CT , , CT , , , [ 3] 1 , : ( mA) , , , CT 25~ 35mA; (Pitch) , 2 CT , CT ( ) Pitch= 1, 40mA 1 2. 1 CT 40mAs, Pitch= 2, 20mAsPitch CT , , , Z CT [2] , X 1mSv 5/ ; , X , , 10 , CT [ 4] , CT 100 10 , ,