肾脏皮质厚度与皮质期分肾功能相关性的增强CT研究  

The Study with Enhanced CT Measurement of Relationship between Renal Cortex Thickness and Split Renal Function during the Renal Cortical Phase

作　　者：吴杰[1] 朱小云[1] 

机构地区：[1]江苏大学附属金坛医院影像科,江苏金坛213200

出　　处：《中国CT和MRI杂志》2013年第4期72-74,共3页Chinese Journal of CT and MRI

摘　　要：目的研究肾皮质CT扫描和增强扫描与皮质期分肾功能的关系。方法选取我院进行肾脏CT检查患者共126例,包括梗阻性肾积水68例和肾肿瘤58例,合计229个肾脏。在CT扫描后进行SPECT检查,以其测量的GFR为参照标准,按照分肾功能分为3组:肾功能正常组(GFR≥34ml/min),减弱组(20ml/min≤GFR<34ml/min),受损组(GFR<20ml/min),各组分别有113个、71个和45个患肾。采用单因素方差比较上述指标的差异,采用Pearson法分析肾脏CT扫描结果与GFR之间相关性。结果三组肾皮质厚度为(0.59士0.13)cm、(0.43士0.09)cm及(0.24士0.08)cm,(P<0.01),肾皮质厚度与GFR呈高度正相关(r=0.816,P<0.05)。增强CT扫描后三组的皮质期CT增强值为(164.3士24.2)HU、(117.8士22.1)HU及(64.2士20.9)HU,(P<0.01),皮质期CT增强值与GFR呈高度正相关(r=0.861,P<0.05)。结论 CT扫描显示的肾皮质厚度及皮质期CT增强值可对分肾功能做出半定量诊断,相对于CT灌注检测方便,辐射量低。Objective To study the relationship between renal cortex on CT scanning and enhancement scanning and split renal thnction of renal cortical phase. Methods 126 patients who undergone CT scan were about 58 cases of renal tumors and 68 cases of obstructive hydronephrosis. GFR which was detected by SPECT after CT scan was used as the reference of split renal function. According to GFR, the 229 kidneys were divided into 3 groups ￡°normal renal function （ 113 case, GFR 〉 34 ml/min）, slightly impaired （71 cases, 20ml/min 〈 GFR 〈 34 ml/min） and severely impaired （45 cases, GFR 〈 20ml/min ）.The differences of these measures in different groups were analyzed with one-way ANOVA and their correlation with GFR was studied with Pearson test. Results In tile cortical thickness among 3 groups, there were significant differences. The cortical thicknesses were （0.59 ±0. 13 ） cm, （ 0.43 ± 0.09 ） cm and （0.24± 0.08 ） cm, respectively（ P 〈 0.01 ）. The renal cortical thickness was strongly correlated with GFR （ r = 0.816, P 〈 0.05）￡There were significant differences in the enhancement during the cortical phase among the 3 groups. Which were （ 164.3± 24.2 ） HU, （ 117.8 ± 22.1 ） HU and （ 64.2 ± 20.9 ） HU, respectively（ P 〈 0.01 ）. The enhancement during the cortical phase was strongly correlated with the GFR（ r = 0.861, P 〈 0.05）. Conclusions The renal cortical thickness and the enhancement during the cortical phase can be taken as a semi-quantitative method of split renal function measuring with relative low X-ray dosage compared with CT perfusion.

关 键 词：肾皮质厚度 体层摄影术 肾皮质期 肾小球滤过率 

分 类 号：R54[医药卫生—心血管疾病] R814[医药卫生—内科学]