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目的:运用头颈部CTA对茎突的解剖进行研究。资料与方法:随机选取我院200例进行头颈部CTA检查的受试者,年龄范围21~82岁,平均年龄(57.38±9.99)岁。根据受试者年龄进行分组,A组<60岁,B组≥60岁。将原始数据传入GE AW 4.5工作站进行容积再现(VR),多平面重组(MPR)等后处理,观察颞骨茎突的形态,并分型;测量茎突的长度、内倾角、前倾角及茎突尖端与颈内外动脉之间的最短距离。结果:197例受试者茎突平均长度约为26.79 mm,内倾角约为21.07°,前倾角约为25.03°,茎突尖端与颈内动脉最短距离均值约为6.26 mm,与颈外动脉最短距离均值约为4.15 mm;茎突尖端与颈外动脉最短距离为0的有44个,占总数的11.2%。双侧茎突长度、内倾角、茎突尖端与颈外动脉最短距离及右侧前倾角性别差异具有统计学意义(P<0.05);内倾角、茎突尖端与颈外动脉最短距离左右侧差异具有统计学意义(P<0.05)。茎突分为4型,各型的比例分别为:完整型(71.75%),发育不良型(22.75%),分节型(4.25%)及未发育型(1.25%)。结论:头颈部CTA不仅能显示茎突的形态、测量茎突的长度、内倾角及前倾角,更能清晰显示茎突与颈内外动脉之间的关系,测量茎突尖端与动脉之间的最短距离,对临床诊断及治疗茎突相关疾病有一定指导及参考意义。
OBJECTIVE: To study the anatomy of the styloid process using head and neck CTA. Materials and Methods: We randomly selected 200 cases of CTA for head and neck in our hospital, ranging in age from 21 to 82 years with a mean age of (57.38 ± 9.99) years. Group A was less than 60 years old and Group B was 60 years old. The original data were sent to GE AW 4.5 workstation for post-processing such as volume rendering (VR) and multiplanar reconstruction (MPR). Morphology of the temporal bone styloid process was observed and classified. The length, camber angle, The shortest distance between the tip and the internal and external carotid artery. Results: The average length of styloid process was about 26.79 mm in 197 subjects, with an inclination of about 21.07 ° and an anteversion of about 25.03 °. The shortest distance between the styloid process tip and the internal carotid artery was about 6.26 mm, The average distance between the styloid process and the external carotid artery was 4.15 mm. There were 44 shortest distances between the styloid process and the external carotid artery, accounting for 11.2% of the total. There were significant differences in the length of styloid process, camber angle, the shortest distance between the styloid process and the external carotid artery and the right anterior tilt angle (P <0.05), and the difference between the camber angle and the shortest distance between the styloid process and the external carotid artery Statistically significant (P <0.05). Styles were divided into four types, the proportion of each type were: intact (71.75%), underdeveloped (22.75%), segmented (4.25%) and unexplained (1.25%). Conclusion: CTA of head and neck can not only display the morphology of styloid process, but also measure the length, incline and anteversion angle of styloid process. It can clearly show the relationship between styloid process and internal and external carotid artery. Measure the relationship between styloid process and artery The shortest distance, the clinical diagnosis and treatment of styloid process-related diseases have some guidance and reference value.