Published by Misasa Medical Center, Okayama University Medical School
Published by Misasa Medical Center, Okayama University Medical School

<Formerly known as>
岡大三朝分院研究報告 (63号-72号) 環境病態研報告 (57号-62号)
岡山大学温泉研究所報告 (5号-56号) 放射能泉研究所報告 (1号-4号)

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Evaluation of low attenliation area (LAA) of the lungs in patients with reversible airway obstruction by high resolution computed tomography (HRCT).

光延 文裕 岡山大学三朝分院内科
御舩 尚志 岡山大学三朝分院内科
芦田 耕三 岡山大学三朝分院内科
保崎 泰弘 岡山大学三朝分院内科
柘野 浩史 岡山大学三朝分院内科
岡本 誠 岡山大学三朝分院内科
原田 誠之 岡山大学三朝分院内科
中井 陸郎 岡山大学三朝分院放射線科
谷崎 勝朗 岡山大学三朝分院内科
抄録
The significance of the low attenuation area (LAA) of the lungs on high resolution computed tomography (HRCT) has not been determined in patients with asthma. We examined the relationship between the percentage of lung area with CT numbers lower than -950HU (% LAA) and the mean CT number in 81 patients with reversible airway obstruction (asthma) and in 22 healthy subjects, as well as the relationship between maximal % LAA and various parameters of pulmonary function, smoking history, disease severity and allergic type in the asthmatic subjects. The mean CT number was obtained by scans at three anatomic levels, and maximal % LAA was the % LAA which had the largest value of those measured at the three anatomic levels of the lung. We found that: 1. The mean CT number was closely related to the maximal % LAA of the lungs in all subjects studied (r= -0.916, p
キーワード
low attenuation area
high resolution computed tomography
reversible airway obstruction
ISSN
0918-7839
NCID
AN10430852