CT增强扫描对肾外伤的诊断和临床价值

The Clinic Value of Contrast-enhanced CT Scans in Diagnosis for Renal Trauma

目的 探讨CT增强扫描在肾外伤诊断中的应用价值。方法 对51例经手术和临床证实为肾外伤患者的CT平扫及增强扫描影像进行回顾性分析。结果 51例患者中，CT平扫能肯定肾外伤诊断的34例．可疑肾损伤诊断的9例、未见异常的8例（敏感性84．3％、特异性66．7％）；行CT增强扫描后，全部患者均能确诊为肾外伤（敏感性100％．特异性100％）。依据其CT表现将肾外伤分为四型：（1）肾挫伤（肾内血肿）24例；（2）肾包膜下血肿18例；（3）严重肾损伤（肾横断或肾破裂）6例；（4）单纯肾周血肿3倒。结论 增强扫描在肾外伤的CT诊断中非常重要，它能够明显提高诊断的准确率，为临床治疗提供可靠的依据。

Objective To evaluate the clinic value of contrast-enhanced CT scans in diagnosis of renal trauma Methods The findings of unenhanced and contrast-enhanced CT scans of 34 cases with renal trauma confirmed by operation and clinic were retrospectively reviewed. Results Of the 51patients, the diagnoses of renal trauma on unenhanced CT scans were certain in 34 patients and uncertain in 9 patients, No abnormalities were found in 8 patients（sensitivity 84.2%, specificity 66.7%）. After the administration of contrast material, all of the patients were diagnosed as renal trauma （sensitivity 100%,specificity 100%）. Based on CT nanifestaition ,Divided into 4 types,（ 1 ）rupture of kidney 24 cases;（2）Sub-capsular hematoma 18 eases;（3）Broken kidney 6cases;（4）single hematoma around the kidney 3 cases .Conclusion Contrast-enhanced CT is important in diagnosis of renal trauma and can obviously improve the diagnostic accuracy. It provides reliable information for clinical treatment.