通过5至10岁儿童胸部X光片的平面测量法估算肺总量。

Estimation of total lung capacity by planimetry of chest radiographs in children 5 to 10 years of age.

作者信息

Campbell S C

出版信息

Am Rev Respir Dis. 1983 Jan;127(1):106-7. doi: 10.1164/arrd.1983.127.1.106.

DOI:10.1164/arrd.1983.127.1.106

Abstract

Planimetry is an inexpensive, easy method to estimate total lung capacity (TLC) when radiographs are available. This prospective study was done to see which of the published planimetric methods for estimating TLC in children aged 5 to 10 yr was best. Helium dilution TLC measurements and 6-foot posteroanterior (PA) and lateral chest films at maximum inspiration were performed on 10 normal subjects and 14 subjects with chest abnormalities. The 2 lung areas on the PA (areas A and B) and lateral (area C) chest films were measured by planimetry. Results of helium dilution TLC measurements were compared to calculations of three different published equations to obtain the correlation coefficient (r) and the probability of identity (P). The equation TLC = 0.67 (A+B+C) ml had the best r (0.94) and P value (0.96). Thus, TLC can be estimated by planimetry in this age group.

摘要

当有胸部X光片时，平面测量法是一种估算肺总量（TLC）的低成本、简便方法。本前瞻性研究旨在确定已发表的用于估算5至10岁儿童TLC的平面测量法中哪种最佳。对10名正常受试者和14名有胸部异常的受试者进行了氦稀释法TLC测量以及最大吸气时的6英尺后前位（PA）和侧位胸部X光片检查。通过平面测量法测量PA胸片上的2个肺面积（A区和B区）和侧位胸片上的肺面积（C区）。将氦稀释法TLC测量结果与三种不同已发表方程的计算结果进行比较，以获得相关系数（r）和一致性概率（P）。方程TLC = 0.67（A + B + C）ml的r值最佳（0.94），P值为（0.96）。因此，该年龄组的TLC可通过平面测量法估算。