【摘要】 目的 :探讨颈动脉体瘤的超声、CT、MRI、血管造影影像学表现及诊断价值。材料与方法 :9例颈动脉体瘤中5例经手术病理证实 ,4例经血管造影证实 ,其中2例为双侧。回顾性分析颈动脉体瘤的各种影像学表现 ,评价其临床价值。结果 :各种检查均可显示肿瘤部位及其形态 ,颈动脉体瘤的B型超声特点为中等偏低实质回声 ,大于3 0cm的肿瘤可见管道结构 ,但肿瘤上缘观察欠清 ,2例行彩色多普勒超声显示瘤内网状血管 ;CT增强显示为富血管肿瘤 ,其中1例肿瘤均匀强化 ,颈内、外动脉密度与瘤体等同难以分辨 ;MRI的特点为瘤内见流空的血管影像 ,明确显示颈内、外动脉分离和紧贴或镶嵌在肿瘤后外缘及前外缘 ,MRA能良好显示肿瘤与颈总动脉及其分叉的关系 ;血管造影除明确诊断和显示供血动脉外 ,2例超选择插管栓塞咽升支血管后肿瘤血供减少约60 %。结论 :B超、CT和MRI对颈动脉体瘤均有一定的特征性诊断价值 ,以MRI最为明确 ,血管造影主要是明确供血动脉、介入治疗和减少术中出血。更多还原

【Abstract】 Objective:To study the imaging features of Carot id Body Tumors(CBT)in Ultrasound,CT,MRI and Angiography and diagnositic values of the examinations.Materials and Methods:5 of the 9 cases were proved by surgery and pathology,the other 4 cases were identified by angiography,2 of which had lesions on both sides of the neck.The chief imaging appearance of each examination was retrospected and their clinical values assessed.Results:Each imaging examination locate and highlight the physical shape of CBT.The specific sonogram of CBT was iso-echoic or hypoechoic solid lesion,small tubular areas could be seen in masses measured over 3cm in diameter,but the upper borderline of the tumor appeared indistinctive.Colour Doppler show web-like vessels inside the tumor in 2 cases;CT enhancement reflected the vascular nature of CBT,in 1 case the tumor could not be distinguished from the internal and the external carotid arteries because they are evenly enhanced;MRI imaging of CBT featured flow-void tumor vessels,and internal and external carotid arteries attached to or embedded respectively in the rear and the front of the external side of masses,distinctively seperated,MRI showed clearly the distinction between CBT and common carotid arteries and their branches;Angiography could certificate diagnosis and showed feeding vessles.After selective embolism of ascending pharyngeal artery of 2 cases,blood supply to the tumor were lessen about 60%. Conclusion:Ultrasound,CT and MRI are valuable and specific in diagnosis of CBT.MRI is superior to the others.Angiography can demonstrate feeding vessels to the CBT and arterial embolism can decrease bleeding in operation.更多还原