Xu Ye-Min, Zhang Yong-Ya, Kang Hong-Zhuang, Fan Lin-Feng, Zhang Zhi-Liang, Yu Qiang
Department of Radiology, Ninth People's Hospital, Shanghai Second Medical University. Shanghai 200011, China.
Shanghai Kou Qiang Yi Xue. 2005 Feb;14(1):14-7.
To evaluate the clinical value of X ray lateral cephalogram in the measurement of adenoids in children.
45 cases (aged from 3 to 13 year old) with adenoid hypertrophy suspected clinically were examined with lateral cephalometric projections, of which 40 cases were examined with lateral nasopharyngeal projections at one time. Then the quality of films were appraisal and the adenoids were measured on the film. Student's X(2) test was used for statistics analysis.
X ray lateral cephalogram can distinctly reveal the structure of nasopharynx. The method was simply and reproducible. The quality of the films were determined based on the conjunction between the base of the pterygoid plate and extracranial aspect of the occipital slope, with consideration of the mandibular margin and sphenoid saddle. The conjunction should be clearly demonstrated and the edges of the mandibular margin and sphenoid saddle should be sharp and well demarcated in qualified films. 45 cases were examined with lateral cephalometric projections, 34 cases had standard films, accounting for 76%. 40 cases were examined with lateral nasopharyngeal projections, 21 had standard films, accounting for 53%. The quality of X ray lateral cephalogram was significantly better than lateral nasopharyngeal projections (P<0.05).
Compared with the routine lateral nasopharyngeal projection, lateral nasopharyngeal cephalogram has images of high quality, is better for showing the nasopharyngeal structures as well as measurement of the adenoids with parenchyma. It is the imaging method of choice for children with OSAHS.
评估X线头颅侧位片在儿童腺样体测量中的临床价值。
对45例临床怀疑腺样体肥大的患儿（年龄3至13岁）进行头颅侧位投照检查，其中40例同时进行鼻咽侧位投照。然后对胶片质量进行评估，并在胶片上测量腺样体。采用Student's X(2)检验进行统计学分析。
X线头颅侧位片能清晰显示鼻咽部结构。该方法简单且可重复。胶片质量根据翼突板基部与枕骨斜坡颅外侧面的结合情况判定，同时考虑下颌缘和蝶鞍。在合格的胶片上，该结合应清晰显示，下颌缘和蝶鞍边缘应锐利且分界清晰。45例进行头颅侧位投照检查，34例获得标准片，占76%。40例进行鼻咽侧位投照，21例获得标准片，占53%。X线头颅侧位片的质量明显优于鼻咽侧位投照（P<0.05）。
与常规鼻咽侧位投照相比，鼻咽部头颅侧位片图像质量高，更有利于显示鼻咽部结构以及对腺样体实质进行测量。它是小儿阻塞性睡眠呼吸暂停低通气综合征（OSAHS）患儿的首选成像方法。
