双源CT在颈动脉体瘤诊治中的应用

The use of dual source CT in diagnosis of carotid body tumors

目的评价双源CT(dual source CT,DSCT)在颈动脉体瘤(carotid body tumor,CBT)诊断、治疗中的价值。方法 2007年9月至2010年4月对临床拟诊CBT的5例行颈部双源CT检查,根据临床体征及影像学检查确定肿瘤的性质及其与颈总、颈内、颈外动脉的关系,评估手术的风险及可行性。结果 5例DSCT检查结果均显示颈总动脉分叉处界线清晰的软组织实性肿块。增强扫描后病灶均呈明显强化,瘤体血供丰富。4例单侧瘤体较小CBT呈现典型的"高脚杯"征。1例双侧瘤体较大,虽未见到颈总动脉分叉处典型"高脚杯"征,但表现为颈总动脉分叉处血管外生性的肿瘤,动脉管腔无明显狭窄。5例均可做出CBT的诊断,均在保留颈总动脉、颈内动脉的基础上完整切除瘤体。结论 DSCT具有检查方便,迅速无创的优点,对CBT的诊断、分型、判断手术难易情况及评估风险均具有指导意义。

Objective To evaluate the value of dual source CT in diagnosis and treatment of carotid body tumors.Methods Between Sep,2007 and April 2010,a total of 5 patients who were planed to be diagnosed as carotid body underwent dual source CT.The relationship of the tumour and the near vessels,and the character of the tumor were identified by analysis of clinical signs and imaging results.The risk factors and feasibility of operations were evaluated before done.The tumors were resected.Results The clear edge mass of soft tissue was shown in all 5 patients in dual source CT images at the bifurcation of the common carotid artery.The tumors presented obviously enhanced high-density after contrast media administration.The tumors have plenty blood supply.4 patients with small tumor in only one side show especially ＂cup-sign＂.One female patient with bilateral tumors didn＇t have＂cup-sign＂and significant narrow blood vessel,however the tumors were much bigger.5 patients were all diagnosed by dual source CT.The tumours were resected and reserved common carotid artery and internal carotid artery.Conclusion Dual source CT is convenience,non-trauma.Its information can be composited.It can offer overall image information of the blood vessel disease such as CBT,which is very important for diagnosis,typing,evaluation the risk of the operation of CBT.So,dual source CT can be the first choice in the diagnosis of carotid body tumor.