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目的评价MR血管成像技术-三维时间分辨力对比剂动力成像(Three-dimenstionaltime-resolved imaging of contrast Kinetics,3D-Tricks)对舌动脉形态显示能力。方法纳入研究对象43例进行3D-Tricks序列扫描,其均无颈部和脑部血管性疾病;利用容积再现(VR)、多平面重组(MPR)及最大强度投影(MIP)技术对舌动脉进行三维重建,观察舌动脉起源、形态、走行,并测量舌动脉起始点、舌骨大角段距颈动脉分叉距离以及舌动脉起始点距舌骨大角段的距离。结果 43例研究对象共显示86侧舌动脉,其中58侧直接起始于颈外动脉,27侧与面动脉、1侧与甲状腺上动脉共干且起始于颈外动脉。舌动脉在舌骨大角处较恒定,以颈动脉分叉为标志,舌骨大角段舌动脉位于颈动脉分叉上方45侧,平行于颈动脉分叉9侧,低于颈动脉分叉32侧。86侧舌动脉起始部内径为(2.88±0.46)mm,距离颈动脉分叉处为(1.33±0.62)cm,距离舌动脉舌骨大角段为(1.28±0.61)cm。结论 3D-Tricks技术能无创性显示舌动脉形态,并能获得活体的解剖学资料,在临床应用中具有重要的指导意义。
Objective To evaluate the ability of MR angiography - Three-dimenstional time-resolved imaging of contrast Kinetics (3D-Tricks) to display the morphology of lingual arteries. Methods Forty-three patients underwent 3D-Tricks scan without neck and brain vascular disease. The tongue arteries were treated by volumetric reconstruction (VR), multiplanar reconstruction (MPR) and maximum intensity projection (MIP) Three-dimensional reconstruction was performed to observe the origin, morphology and pathology of tongue arteries. The starting point of tongue arteries, the bifurcation distance between carotid bifurcation and the starting point of tongue arteries were measured. Results Totally 86 cases of lingual arteries were found in 43 cases. 58 of them started directly from the external carotid artery, 27 from the facial artery, and 1 from the superior thyroid artery and started from the external carotid artery. The lingual arteries are relatively constant at the large angle of the hyoid bone and are marked by the bifurcation of the carotid artery. The lingual arteries of the lingual large angle segment are located at 45 sides above the bifurcation of the carotid artery, parallel to 9 sides of the bifurcation of the carotid artery and 32 below the bifurcation of the carotid artery . The diameter of the lateral part of the lingual artery was (2.88 ± 0.46) mm, (1.33 ± 0.62) cm from the bifurcation of the carotid artery, and (1.28 ± 0.61) cm from the greater angle of the lingual artery. Conclusion The 3D-Tricks technique can noninvasively display the morphology of lingual arteries and obtain anatomical data of the living body, which has important guiding significance in clinical application.