摘要目的：探讨红外热成像技术在检测无症状吸烟患者末梢血管病变的临床价值。方法于2013年4月至5月本院采用红外热成像仪检测80例烟龄15~40年的无症状吸烟者双下肢体血液循环状态。按吸烟量将受试者分为高（≥25包/年）和低（<25包/年）两组，分别为45例和35例，按统一姿势采图四张，分别记录双下肢第1至第5足趾（D1?5）、内外踝前部连线中点（AA）、足背中点（DP）、踝关节后部中点（AP）、内踝（MM）、及外踝（ML）共10个采样点的红外线测量值，并以左右两侧均值对比高、低吸烟两组的差异。结果两组年龄（42.89±8.82比53.26±6.37岁）和烟龄（18.24±4.18比29.34±4.87包/年）差异有统计学意义（P<0.05），但两组平均性别比例、体重、BMI和家族疾病史均差异无统计学意义（P>0.05）。矫正年龄因素后，比较各检测点（D3除外）两组红外线测量值间均差异有统计学意义（P<0.05），D3检测值组间无统计学差异（P=0.06）。结论红外热成像技术在检测吸烟患者末梢血管病变中可能具有一定的临床价值，有待扩大样本量进行分层分析。

abstractsObjective To evaluate the value of infrared thermal imaging (IRTI) in detection of peripheral vasculopathy in asymptomatic smokers. Methods From April to May in 2013,80 asymptomatic smokers who had smoked for 15?40 years were evaluated for blood supply to the lower extremities by using IRTI in our hospital. Based on the smoking amount,the subjects were divided into heavy smokers group(≥25 pack?years,n=45) and light smokers group (<25 pack?years,n=35). Measurements of IRTI were performed for each subject in quadruplicate in a uniform body posture. The average temperature of the following 10 points at the both lower limbs were recorded and compared between groups:D1?D5 (digit pedis),AA(anterior ankle?feet midpoint),DP(dorsalis pedis),AP(posterior ankle?feet midpoint),MM (malleolus medialis),and ML (malleolus lateralis). Results There were significant differences in the mean age(42.89 ± 8.82 vs 53.26 ± 6.37 y/o)and smoking history(18.24 ± 4.18 vs 29.34 ± 4.87 pack years) between the light and heavy smokers(P<0.05),but not in gender,body weight,body mass index(BMI), and family history (P>0.05). After adjusting for age, statistical difference was found in the mean temperatures at all points except for D3(P=0.06)between the two groups(P<0.05). Conclusion IRTI might be clinically valuable in assessing distal vasculopathy in asymptomatic smokers,although validation&nbsp;with stratified analysis of larger sample is needed.