背景:这项研究的目的是比较全景X线摄影和计算机断层扫描(CT)获得的长度比,以验证前者是否足以诊断冠状增生过程。
方法:对1例冠状突增生患者进行调查。使用Levandoski方法在全景X射线照片上测量冠状突与髁之间的长度比,并使用Tavassol等人描述的方法在CT扫描上测量。和Stopa等人。比较了使用三种测量方法获得的平均长度比。
结果:用Levandoski方法测量的平均长度比明显低于用Stopa等人描述的方法测量的平均长度比。(1.09[0.09]vs.1.21[0.09];P=0.0001),并且低于使用Tavassol等人描述的方法测得的值。(1.09[0.09]vs.1.34[0.44];P=0.013)。
结论:使用Levandoski方法对冠状突过程进行全景测量倾向于低估长度比,强调在最轻微的怀疑下使用扫描图测量方法来确认冠状突增生的诊断的重要性。
BACKGROUND: The objective of this study was to compare the length ratios obtained on panoramic radiography and computed tomography (CT) to verify whether the former is adequate for diagnosing coronoid process hyperplasia.
METHODS: A
case series of patients with coronoid process hyperplasia was investigated. Length ratios between the coronoid process and condyle were measured on panoramic radiographs by using the Levandoski method and on CT scans by using the methods described by Tavassol et al. and Stopa et al. The mean length ratios obtained using the three measurement methods were compared.
RESULTS: The mean length ratio measured with the Levandoski method was significantly lower than that measured with the method described by Stopa et al. (1.09 [0.09] vs. 1.21 [0.09]; P = 0.0001) and lower than that measured with the method described by Tavassol et al. (1.09 [0.09] vs. 1.34 [0.44]; P = 0.013).
CONCLUSIONS: Panoramic measurement of the coronoid process by using the Levandoski method tended to underestimate the length ratio, emphasizing the importance of using a scanographic measurement method at the slightest doubt to confirm the diagnosis of coronoid process hyperplasia.