16层螺旋CT在脾动脉瘤诊断中的应用价值

目的评价16层螺旋CT在脾动脉瘤诊断中的价值。方法回顾性分析20例脾动脉瘤患者的CT影像资料。结果20例患者进行了16层螺旋CT增强扫描，动脉期数据被用于影像后处理，包括最大密度投影及容积再现法。20例患者中共检出32个动脉瘤，发生于脾动脉主干者5个，脾门处15外，脾内分支者12个；单发脾动脉瘤14例，多发6例；最大者最大径约8.1cm，最小者最大径约1.2cm；30个为囊形动脉瘤，2个为梭形动脉瘤；1个动脉瘤可见附壁栓子形成，1个动脉瘤可见瘤壁环形钙化；本组20例中术中发现8例，其余12例24个动脉瘤均为CT血管成像诊断。VR影像上均可清晰显示动脉瘤形态、大小、位置，包括发生于脾内分支的小动脉瘤。结论16层螺旋CT在脾动脉瘤诊断及筛查中有重要的应用价值。

Role of 16-slice CT in diagnosing splenic aneurysm

Objective To evaluate efficacy of 16-slice CT in diagnosing splenic aneurysm. Methods 20 patients with splenic aneurysm were retrospectively reviewed for their imaging findings. All 20 patients underwent enhanced 16-slice spiral CT imaging and data collected were processed using MIP or VR. Results 32 aneurysms were detected in 20 patients. 5 were situated in main stem of splenic artery, 15 in hilus of spleen, 12 in bifurcation of splenic artery inside spleen. 14 cases had single lesion and 6 had multiple lesions. The biggest lesion had a longest length 8.1cm, and shortest 1.2cm. 30 were cyst-like lesions, 2 were shuttle-like, 1 had wall-attached embolus, 1 showed ring-like calcification along wall of aneurysm. 8 out of 20 aneurysms wre detected during operation and the remaining 24 lesions in 12 cases were diagnosed by CT angiography. VR clearly displayed shape, size, and location of lesions, even those small ones situated in bifurcations. Conclusions 16-slice CT plays an important role in diagnosing splenic aneurysms.