CT Indexes of Emphysema and Airways in Healthy Volunteers: Normal Values; Relations With Gender, Height and Weight
調査の概要
詳細な説明
87 healthy volunteers performed consecutively a low-dose chest CT scan and pulmonary function tests:
On chest CT scans, indexes reflecting pulmonary emphysema and airways measurements have been computed by using dedicated softwares. Each of our three readers performed two reading sessions.
Relative area of lung parenchyma with attenuation value less than -960 Hounsfield Units; luminal area and wall thickness in third and fourth generations airways were recorded.
- Pulmonary function tests were performed: vital capacity, forced vital capacity , functional residual capacity, total lung capacity, residual volume, forced expiratory volume in one second, and diffusion lung capacity for carbon monoxide were recorded (either in absolute values and percentage of predicted values).
CT indexes were compared with gender, height and weight.
研究の種類
入学 (実際)
連絡先と場所
研究場所
-
-
-
Brussels、ベルギー、1070
- Erasme University Hospital
-
-
参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
サンプリング方法
調査対象母集団
説明
Inclusion Criteria:
- Never smoked.
- No respiratory infection in the 4 weeks before the begin of the study.
- No history of pulmonary resection.
- No active malignancy or malignancy of any organ system within the past 5 years.
Exclusion Criteria:
- no exclusion criteria
研究計画
研究はどのように設計されていますか?
デザインの詳細
コホートと介入
グループ/コホート |
介入・治療 |
|---|---|
|
Healthy Volunteers
Inclusion criteria:
|
Supine chest CT scan after full inspiration. Acquisition parameters: (Topogram 35 mA 120 kV 512 mm length) 35 quality ref mAs with care-dose ON 120 kV Pitch 1.4 Rotation time 0.33 s Acquired images 64 x 0.6 mm |
この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
CT index - RA960 (%)
時間枠:4 hours
|
From acquired data, images were reconstructed using a soft algorithm.
On these soft images, the relative area of lung parenchyma with attenuation value less than -960 Hounsfield Units was computed (expressed in %), as an index representative of pulmonary emphysema extent.
|
4 hours
|
|
CT index - LA3rd (mm2)
時間枠:4 hours
|
From acquired data, images were reconstructed using a high resolution algorithm.
On these high-resolution images, the airway lumen was measured in third generations of airways (expressed in mm2).
|
4 hours
|
|
CT index - LA4th (mm2)
時間枠:4 hours
|
From acquired data, images were reconstructed using a high resolution algorithm.
On these high-resolution images, the airway lumen was measured in fourth generations of airways (expressed in mm2).
|
4 hours
|
|
CT index - WT3rd (mm)
時間枠:4 hours
|
From acquired data, images were reconstructed using a high resolution algorithm.
On these high-resolution images, the airway wall was measured in third generations of airways (expressed in mm).
|
4 hours
|
|
CT index - WT4th (mm)
時間枠:4 hours
|
From acquired data, images were reconstructed using a high resolution algorithm.
On these high-resolution images, the airway wall was measured in fourth generations of airways (expressed in mm).
|
4 hours
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Pulmonary function tests - VC (l)
時間枠:4 hours
|
Vital capacity was measured (expressed in l).
|
4 hours
|
|
Pulmonary function tests - FVC (l)
時間枠:4 hours
|
Forced vital capacity was measured (expressed in l).
|
4 hours
|
|
Pulmonary function tests - FRC (l)
時間枠:4 hours
|
Functional residual capacity capacity was measured (expressed in l).
|
4 hours
|
|
Pulmonary function tests - TLC (l)
時間枠:4 hours
|
Total lung capacity was measured (expressed in l).
|
4 hours
|
|
Pulmonary function tests - RV (l)
時間枠:4 hours
|
Residual volume was measured (expressed in l).
|
4 hours
|
|
Pulmonary function tests - FEV1 (l)
時間枠:4 hours
|
Forced expiratory volume in one second was measured (expressed in l).
|
4 hours
|
|
Pulmonary function tests - DLCO (ml/min/ mmHg)
時間枠:4 hours
|
Diffusion lung capacity for carbon monoxide was measured (expressed in ml/min/ mmHg)
|
4 hours
|
協力者と研究者
出版物と役立つリンク
一般刊行物
- Madani A, Zanen J, de Maertelaer V, Gevenois PA. Pulmonary emphysema: objective quantification at multi-detector row CT--comparison with macroscopic and microscopic morphometry. Radiology. 2006 Mar;238(3):1036-43. doi: 10.1148/radiol.2382042196. Epub 2006 Jan 19.
- Madani A, De Maertelaer V, Zanen J, Gevenois PA. Pulmonary emphysema: radiation dose and section thickness at multidetector CT quantification--comparison with macroscopic and microscopic morphometry. Radiology. 2007 Apr;243(1):250-7. doi: 10.1148/radiol.2431060194.
- Hackx M, Bankier AA, Gevenois PA. Chronic obstructive pulmonary disease: CT quantification of airways disease. Radiology. 2012 Oct;265(1):34-48. doi: 10.1148/radiol.12111270.
- Hackx M, Gyssels E, Severo Garcia T, De Meulder I, Alard S, Bruyneel M, Van Muylem A, Ninane V, Gevenois PA. Chronic Obstructive Pulmonary Disease: CT Quantification of Airway Dimensions, Numbers of Airways to Measure, and Effect of Bronchodilation. Radiology. 2015 Dec;277(3):853-62. doi: 10.1148/radiol.2015140949. Epub 2015 May 19.
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
キーワード
その他の研究ID番号
- P2010/175
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