慢性泪囊炎患者基于CT泪道造影的泪囊与中鼻甲腋平面距离的测量研究

Measurement of the distance between lacrimal sac and axillary plane of middle turbinate in patients with chronic dacryocystitis based on CT lacrimal duct radiography

目的测量慢性泪囊炎患者患病泪囊顶部及底部至中鼻甲腋平面的距离从而明确泪囊与中鼻甲腋平面的相对位置关系。设计实验研究。研究对象成都中医药大学附属医院191例(216眼)慢性泪囊炎患者的CT泪道造影图像。方法进行CT泪道造影图像三维重建,选择冠状位上能同时完整显示泪囊及中鼻甲腋平面的图像,运用软件测量工具,对图像上患病泪囊顶部及底部至中鼻甲腋平面的距离进行测量。主要指标泪囊顶部及底部至中鼻甲腋平面的距离。结果191例216眼中女性153例173眼。所有患者、不同性别之间、不同年龄段之间、不同眼别之间,患病泪囊顶部至中鼻甲腋平面的距离与底部至中鼻甲腋平面的距离比较,除0~20岁年龄组差异无统计学意义(P>0.05)外,其余均具有统计学意义(P均<0.05),且泪囊底部至中鼻甲腋平面的距离大于顶部至中鼻甲腋平面的距离。41~60岁组患者底部至中鼻甲腋平面的距离较61~80岁组患者大(P=0.003)。结论慢性泪囊炎患者患病泪囊底部至中鼻甲腋平面的距离大于顶部至中鼻甲腋平面的距离,泪囊大部分位于中鼻甲腋平面的下方。

Objective To measure the distance from the top and bottom of the lacrimal sac(LS)to the middle turbinate axillary plane(MTAP)on computed tomographic dacryocystography(CT-DCG)to clarify the relative positional relationship between LS and MTAP in patients with chronic dacryocystitis(CD).Design experimental study.Participants CT lacrimal angiography images of 191 patients(216 eyes)with CD in the Affiliated Hospital of Chengdu University of Traditional Chinese Medicine.Methods CT-DCG was performed in the patients.CT post-processing technology was used to carry out three-dimensional reconstruction of CT images,and to measure the distance from the top and bottom of the LS to the MTAP on the CT image.Main Outcome Measures The distance from the top and bottom of the LS to the MTAP.Results 153 cases(173 eyes)in all 191 patients(216 eyes)with CD are females.There is statistically significant difference in the distance between the top and the bottom of the LS to the MTAP in patients both in different genders and in different diseased eyes(P<0.05).There is no statistically significant difference in the 20-year-old age group(P>0.05),and the other age groups are statistically significant(P<0.05).The distance from the bottom to the LS to the MTAP is larger than that from the top of the LS to the MTAP.There is statistically significant difference in the bottom distance between the 41-60-year-old group and the 61-80-year-old group(P=0.003).The distance from the bottom of the LS to the MTAP is larger in the patients aged 61-80 years than that in patients aged 61-80 years.There is no significant difference both the top distance and the bottom distance of the other groups(P>0.05).Conclusions The distance from the bottom of the LS to the MTAP is larger than that from the top of the LS to the MTAP in patients with CD.Most of the LS are located below the MTAP.