动态容积CT在青年型鼻咽血管纤维瘤术前评估中的价值

发布时间：2018-04-20 05:22

本文选题：鼻咽肿瘤 + 血管纤维瘤　；参考：《中国医学影像学杂志》2017年06期

【摘要】：目的探讨320排动态容积CT在青年型鼻咽血管纤维瘤(JNA)术前评估病灶及明确供血动脉中的价值。资料与方法回顾性分析18例经320排动态容积CT检查并经手术病理证实的JNA患者的影像学资料,进行肿瘤的影像学分期,确定肿瘤的供血动脉。结果增强早期肿瘤呈不均匀明显强化(17/18),随时间延长病灶强化范围扩大,其中11例时间-密度曲线(TDC)呈速升速降型,7例呈持续上升型。肿瘤的供血均包含患侧颈外动脉系的分支,并与影像学分期密切相关,随着肿瘤分期增高,供血动脉的数目增多,差异有统计学意义(r=0.858,P0.05),IIc期以上的病灶由患侧上颌及咽升动脉同时供血。320排动态容积CT扫描检查的有效剂量为(3.30±0.08)m Sv,低于DSA寻找血供时产生的辐射剂量(7.62±2.39)m Sv,差异有统计学意义(t=-7.98,P0.05)。结论 320排动态容积CT影像具有一定的特征性,能够较好地显示供血动脉,进行精准影像学分期,在肿瘤的术前评估中具有重要的临床价值。
[Abstract]:Objective to evaluate the value of 320-slice dynamic volume CT in the preoperative evaluation of lesions and the determination of feeding arteries in young patients with nasopharyngeal angiofibroma. Materials and methods the imaging data of 18 patients with JNA diagnosed by 320 row dynamic volume CT and confirmed by operation and pathology were retrospectively analyzed. The imaging stages of the tumor were performed to determine the blood supply artery of the tumor. Results at the early stage of enhancement, the tumor was enhanced inhomogeneously by 17 / 18, and the range of enhancement was enlarged with the extension of time. Among them, 11 cases of TDCs showed the type of rapid ascending and fast descending, and 7 cases showed the type of continuous ascending. The blood supply of the tumor included the branches of the affected external carotid artery system, and was closely related to the imaging staging. With the increase of the tumor stage, the number of the blood supply arteries increased. The difference was statistically significant in the lesions above stage IIC from the maxillary and ascending arteries. The effective dose was 3.30 卤0.08m Sv. which was lower than the radiation dose of 7.62 卤2.39mSv when DSA was looking for blood supply. The difference was statistically significant. The difference was statistically significant between 7.98-7.98mSv and 7.98mSv.Then, the effective dose was 3.30 卤0.08mSv in the dynamic volume CT scanning of the upper maxillary artery and the ascending pharynx artery at the same time, which was significantly lower than the radiation dose of 7.62 卤2.39mSv when DSA was looking for blood supply. Conclusion 320 slice dynamic volume CT imaging has some characteristics, it can display the blood supply artery well and carry out accurate imaging staging. It has important clinical value in the preoperative evaluation of tumor.
【作者单位】：福建医科大学附属第一医院影像科;
【分类号】：R730.44;R739.63

【相似文献】