摘要
目的应用低剂量CT探讨小儿多囊性肾发育不良(Multicystic Dysplastic Kidney,MCDK)的影像诊断价值。方法 2008年2月至2009年12月经低剂量CT扫描诊断为单侧多囊性肾发育不良9例患儿;年龄1岁-12(4.79±4.56)岁。结果 CT扫描参数:120KV,60-110(85.28±13.31)mAs,有效剂量(effective dose,ED)为3.18-11.35(7.37±2.36)mSv;①患肾明显小于健肾;②囊的数目1-11(5.6±2.9)个;直径5～95(19.5±14.3)mm;③患肾动静脉发育不良或不发育;④1例患侧囊壁钙化;⑤患肾3例可见条索状的实性成份;⑥健肾代偿性增大。结论低剂量CT扫描可清楚显示MCDK病变特点,患肾较小、形态不规则,以多囊性改变为主,囊液呈水样密度,肾血管发育不良。
Objective To explore the value of low-dose CT in the diagnosis of Multicystic Dysplastic Kidney in children.Methods From February 2008 to December 2009,9 children were diagnosed as unilateral multicystic dysplastic kidney by low-dose CT.The mean age was 4.79±4.56 years old（rang 1-12 years old）.Results The CT scanning technical parameters：120KV,60-110（85.28±13.31）mAs;CTDI：4.4-8.8（6.66±1.12）mGy,DLP：212-438.63（315.63±80.98）mGycm;ED：3.18-11.35（7.37±2.36）mSv.①Dysplastic kidney was obviously smaller than contralateral kidney.②The number of cystis was 1-11（5.6±2.9）and the diameter was 5-95（19.5±14.3）mm.③The vascellum of the dysplastic kidney was aplasia or dysplasia.④The calcification could be seen on the capsule wall in 1 case.⑤Cord-like solid components could be observed in 3 cases.⑥Compensatory hypertrophy of contralateral kidneys was generally expected.Conclusion The characteristics of MCDK can be clearly showed by using Low-dose CT：the dysplastic kidney is small and irregular.The characteristics of dysplastic kidney are poly-cystic changes.The density of fluid in the cystis is similar to water.The vascellum of dysplastic kidney is dysplasia.
出处
《中国CT和MRI杂志》
2011年第6期19-21,共3页
Chinese Journal of CT and MRI
