摘要
目的:探讨腺样体的多层螺旋CT(MSCT)测量方法,测定各年龄组儿童腺样体的生理大小。方法:回顾性分析因其它疾病而行鼻咽部CT扫描的56名儿童的CT横断图像,薄层重建后传送至工作站行多平面重组(MPR),于MPR正中矢状面测量腺样体的厚度(A)及鼻咽腔的宽度(N),以A/N比率反映腺样体的大小。56名儿童分三组分析:Ⅰ组1～3岁14人,Ⅱ组4～8岁19人,Ⅲ组9～14岁23人。结果:三组儿童腺样体厚度分别为8.78±1.19mm、10.19±1.18mm、9.32±1.21mm,Ⅰ、Ⅱ组腺样体厚度(A)有统计学意义(t=2.65,P<0.05);鼻咽腔宽度(N)分别为17.53±1.47mm、19.13±2.12mm、22.91±2.34mm,Ⅰ、Ⅲ组的鼻咽腔宽度具有显著差异性(t=3.25,P<0.01);三组儿童腺样体的A/N比率分别为0.49±0.07、0.51±0.08、0.46±0.05,各组儿童腺样体的A/N比率不具统计学意义(P>0.05)。结论:了解儿童不同时期腺样体的生理大小,有助于临床判断腺样体有无肥大、肥大的程度。多层螺旋CT检查是儿童腺样体检查的首选。
Objective：To investigate the measurement method of adenoid by mutislice sprial CT（MSCr）, and assess the physiogical size of adenoid in children at different age group. Methods： CT axial images of 56 children examined by MSCT because other illness were analyzed retrospectively, then the data was transmitted to the workstation and reconstrcucted with mutiplarar reconstrcuction（MPR）. The adenoid thickness（A） and the width of nasopharynx cavity（N） were observed on the center slice of sagittal plane. The size of adenoid was judged by adenoidal nasopharyngeal ratio（A/N）. 56 children were divided to 3 groups： group Ⅰ 1 - 3 years old in 14, Group Ⅱ 4 - 7 years old in 19, Group Ⅲ 8 - 14 years old in 23. Results：The adenoid thlckness（A） with 3 groups was 8.78 ± 1.19mm, 10.19 ± 1.18mm, 9.32± 1.21mm the adnoid thickness（A） of Group Ⅱ was greater than Group Ⅰ （ t = 2.65, P 〈 0.05） ; the width of nasopharynx cavlty（N） with 3 groups was 17.53 ± 1.47mm, 19.13 ± 2.12mm, 22.91 ± 2.34mm, respectively. There was more senstive between Group Ⅲ and GroupI（ t = 3.25, P 〈 0.01 ） ; the A/N ratio of adenoid with 3 groups was 0.49 ± 0.07, 0.51 ± 0.08, 0.46 ± 0.05, respectively. There was no significant differece among 3 groups （ P 〉0.05）. Conclusion：To understand the physioglcal size of adenoid is useful to evalute adenoid hypertrophy and the hypetrophic extent. MSCT will be the first chioce examination of adenoid.
出处
《医学影像学杂志》
2008年第8期933-936,共4页
Journal of Medical Imaging
