| 樊云,刘杰,杨凤,杨明,王颖.热感应呼吸探测仪用于5岁以下儿童胸部数字X线摄影[J].中国医学影像技术,2026,42(3):453~456 |
| 热感应呼吸探测仪用于5岁以下儿童胸部数字X线摄影 |
| Thermal-sensing respiration detector applicated in chest digital radiography for children under 5 years |
| 投稿时间：2025-12-22 修订日期：2026-03-06 |
| DOI：10.13929/j.issn.1003-3289.2026.03.027 |
| 中文关键词: 儿童,学龄前 婴儿 放射摄影术,胸部 热成像术 前瞻性研究 |
| 英文关键词:child,preschool infant radiography,thoracic thermography prospective studies |
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| 中文摘要: |
| 目的 观察热感应呼吸探测仪用于5岁以下儿童胸部数字X线摄影(DR)的价值。方法 前瞻性招募1 000名拟接受胸部DR检查的＜5岁且不能立位配合儿童,随机将其均分为观察组和对照组各500名,并于组内根据年龄划分5个亚组。对观察组以热感应呼吸探测仪监测口鼻区域吸气相(设温度降低阈值为0.3 ℃)并自动触发曝光;对照组由技师根据呼吸状态选择曝光时机进行手动曝光。利用双因素方差分析观察摄片方法与年龄对肺野充盈肋间数的影响,以身高为协变量、采用双因素协方差分析评估上述因素对肺野最大横径的影响;根据校正后组间同龄边际均值的差值及其95%置信区间(CI)判断吸气质量指标改善效果。结果 观察组肺野充盈肋间数及肺野最大横径均大于对照组(P均＜0.05)。相比对照组,观察组肺野充盈肋间数增加0.45(0.37,0.53)个、校正身高后肺野最大横径增加9.58(7.38,11.77)mm(P均＜0.05),且各亚组吸气质量指标均获改善。观察组废片率为0(0/500),对照组废片率为2.20%(11/500)。结论 利用热感应呼吸探测仪能捕捉5岁以下各龄儿童吸气相、优化曝光时机、提升胸部DR图像质量。 |
| 英文摘要: |
| Objective To explore the value of thermal-sensing respiratory detector for chest digital radiography (DR) in children under 5 years. Methods A total of 1 000 children aged ＜5 years and unable to cooperate with standing position examination who would undergo chest DR examination were prospectively enrolled and randomly divided into observation group and control group (each n=500), then were further divided into 5 subgroups according to ages. A thermal-sensing respiratory detector was used to monitor the oral and nasal area, and automatic exposure was triggered during inspiration with a temperature decrease threshold of 0.3 ℃ in observation group, while the manual exposure time was subjectively determined by technician based on chest and abdominal wall motion in control group to obtain chest DR. Two-way analysis of variance was used to explore the impact of examination method and age on the number of intercostal spaces with lung field expansion, while two-way analysis of covariance, with height as a covariate, was used to observe the impact of examination method and age on the maximum transverse diameter of lung field. The improvement of inspiratory quality was represented by the adjusted marginal mean differences and the 95% confidence interval (CI) in the same ages between groups. Results The number of visible intercostal spaces and maximum transverse diameter of lung fields in observation group were higher than those in control group (both P＜0.05). Compared with control group, the number of visible intercostal spaces increased 0.45 (0.37, 0.53), and the height-adjusted maximum transverse diameter of lung fields increased 9.58 (7.38, 11.77) mm in observation group (both P＜0.05), and improvements of inspiratory quality indicators were observed across all subgroups. The reject film rate was 0 (0/500) in observation group and 2.20% (11/500) in control group. Conclusion Thermal-sensing respiratory detector enabled objective identification of inspiratory phase in children under 5 years, hence optimizing exposure timing and improving imaging quality of chest DR. |
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