To evaluate the diagnostic value and clinical significance of multi-slice spiral CT (MSCT) enhanced scanning in blunt renal trauma.

The clinical data of 116 patients with renal trauma treated in our hospital from January 2012 to December 2017 were analyzed. All of these cases underwent abdomen MSCT scans and 92 cases underwent enhanced scans, 41 patients performed excretory phase scan. The CT manifestations were analyzed, and compared with the B ultrasound results, the rates of diagnosis of kidney were compared.

According to criterion of Association for the Surgery of Trauma (AAST), the 116 cases were divided intoⅠ-Ⅴ grades according to American Association for the surgery of trauma organ injury Severity Scale for the Kidney. Multi-slice spiral CT in the diagnosis of patients with renal injury in 26 cases of grade I, 27 cases of grade II, 39 cases of gradeⅢ, 14 patients of gradeⅣ, 10 cases of grade V. Diagnosis rates of spiral MSCT in classⅠ, gradeⅡ,Ⅲ,Ⅳ,Ⅴ level in renal closed injury rate were 88.5%, 88.9%, 89.7%, 92.8%, 100.0%, which was significantly higher than that of B ultrasound diagnosis coincidence rate 80.7%, 81.5%, 84.6%, 85.7%, 90%, the difference had statistical significance (P<0.05). The outcomes of MSCT enhanced scanning achieve a 100% diagnostic accuracy rate, which was confirmed by surgical findings. In one case of MSCT plain scan, right kidney injury was considered and renal integrity was detected by surgical exploration, while enhanced scan was 100% consistent with the surgical results.

MSCT enhanced scanning can quickly determine the degree of renal injury and the concomitant injury of patients, and has important clinical guiding value for the diagnosis and grading of renal injury.