正常人下颌骨、舌骨结构和舌后腔截面积的CT测量  

The value of CT measurement of normal human mandible, hyoid and the airway area at the hyoid level

作　　者：陈长亮[1] 张佳[1] 葛平江[2] 张思毅[2] 

机构地区：[1]广东省人民医院放射科,510080 [2]广东省人民医院耳鼻喉科,510080

出　　处：《中华放射学杂志》2004年第8期878-881,共4页Chinese Journal of Radiology

摘　　要：目的 通过测量正常人,即因颈部其他疾患而非阻塞性睡眠呼吸暂停综合征(OSAS)就诊来作CT的受检者的下颌骨和舌骨在CT图像上各径线长度及两骨骨体夹角角度,及其与颈椎的关系和舌水平后上气腔的截面积,确定其国人CT正常值并推荐其临床应用。方法 在68例正常人颌面、喉颈部CT检查个例的轴面图像上,对下颌骨设定A、B、C 3条径线及α1角:A为下颌骨两游离端内缘间的距离;B为下颌骨体内缘至A线的距离;C为A线至颈椎椎体前缘的距离;α1角为下颌骨体夹角。对舌骨设定a、b、c 3条径线及:α2角:a为舌骨大角两游离端内缘之间的距离;b为舌骨体内缘至a线的距离;c为a线至颈椎椎体前缘的距离;α2角为舌骨体夹角。在舌水平后找出1个最大的上气腔平面,设定其截面积为S。由作者在医学图像存储与传输系统工作站上操作,分别测量各径线长度及各夹角度数和舌水平后上气腔截面积的数值,并用SPSS11.5统计分析软件包行统计学分析。结果 A线值范围为:A70.8-103.1 mm,中位数为88.70 mm,均数及标准差为(89.28±5.90)mm;B线值范围为:B 51.8-76.7 mm,中位数为62.50 mm,均数及标准差为(62.61±5.78)mm;C线值范围为:C-3.5-17.2 mm,中位数为4.20 mm,均数及标准差为(9.29±3.29)mm;α1角测定值范围为:α1 50.0°-105.3°,中位数为71.05°。Objective To determine the normal value and clinical significance of the lengths and angles of both mandible and hyoid, and their relationship with cervical vertebra as well as the transverse area of the airway at the hyoid level using CT. Methods Several lines and angles on the CT images were measured in 68 normal subjects. Line A was the length between both free ends of the mandible; line B was the distance from the body of the mandible to line A; Line C was the distance from line A to the anterior aspect of the cervical vertebra. α1 was the angle between the middle of mandible body and its two free ends. Line a was the distance between two free ends of greater horn of hyoid bone. Line b was the distance from hyoid to line a. line c was the distance from line a to the cervical vertebra α2 was the angle between the middle of hyoid body and its two free ends. S stood for the area of the airway at the hyoid level. SPSS 11.5 statistical analysis package was used to analyze the results. Results The average and median distance/angle of various measurements were as follows: bne A was (89. 28±5. 90) mm and 88. 70 mm, line B was (62. 61±5. 78) mm and 62. 50 mm, line C was (9. 29±3. 29) mm and 4. 20 mm, α1 was (71. 25± 6. 77)° and 71. 05° , line a was (38. 69±6. 07) mm and 39. 90 mm, line b was (28. 79±4. 37) mm and 28.50mm, line c was (1.91±3.03) mm and 1.75 mm, α2 was (68.47±15.71)° and 66.95°.The average S was (436. 14±160. 37) mm and median was 431. 75mm2. Conclusion It's easy to measure the three lines and the two angles of mandible and hyoid. The measurement is of vital importance in the diagnosis and treatment for obstructive sleep apnea syndrome.

关 键 词：正常人 下颌骨 舌骨 结构 舌后腔截面积 CT测量 阻塞性睡眠呼吸暂停综合征 

分 类 号：R816.98[医药卫生—放射医学]