目的 探讨高场1.5T MRI在闭合性脾损伤诊断中的应用价值。方法 回顾性分析经病理或随诊证实54例闭合性脾损伤患者的1.5T MRI图像信息,并与首诊CT图像相比较,确定脾内血肿及脾被膜血肿为直接诊断征象,脾内密度或信号不均、体积增大、边缘毛糙、腹腔积血为间接诊断征象,分析比较MRI及CT两种影像方法在发现直接与间接征象个数上的差异性。结果 54例脾损伤中,首诊CT确诊46例,疑似5例,3例漏诊;首诊MRI确诊51例,疑似3例,无漏诊。MRI发现脾内血肿个数高于CT,脾被膜血肿、间接征象的发现个数低于CT,差异具有统计学意义(P＜0.05)。结论 MRI脾损伤影像特点具有特征性,在部分隐匿性病例中能够与CT检查互为补充,为临床及时诊治提供重要的参考价值。
Abstract
Objective To explore the diagnostic value of high-field 1.5T MRI in closed splenic trauma. Methods The 1.5T magnetic resonance image information about 54 patients with closed splenic trauma confirmed by pathology or follow-up was retrospectively analyzed and compared with the CT image during the first visit. Intrasplenic hematoma and splenic capsule hematoma were chosen as direct diagnostic signs while uneven density or signals, an increase in volume, rough edges and hemoperitoneum were regarded as indirect diagnostic signs. The difference in the number of direct and indirect signs detected by MRI and by CT imaging was studied. Results Among the 54 cases of splenic trauma, 46 were diagnosed by CT during the first visit, 5 were suspected, and 3 cases were missed, compared with 51 and 3 diagnosed by MR that had no missed cases. MRI detected not only more intrasplenic hematomas than CT, but fewer splenic capsule hematomas and indirect signs. The difference between the two groups was statistically significant(P＜0.05). Conclusions There is something unique about MRI imaging of splenic of trauma, which can complement CT examination in some occult cases, and is of more referential value for the diagnosis and treatment of splenic trauma.
关键词
磁共振 /
脾损伤
Key words
MRI /
splenic trauma
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