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- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT02611947
CT Indexes of Emphysema and Airways in Healthy Volunteers: Normal Values; Relations With Gender, Height and Weight
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Descripción detallada
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.
Tipo de estudio
Inscripción (Actual)
Contactos y Ubicaciones
Ubicaciones de estudio
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Brussels, Bélgica, 1070
- Erasme University Hospital
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-
Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Método de muestreo
Población de estudio
Descripción
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
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
Cohortes e Intervenciones
Grupo / Cohorte |
Intervención / Tratamiento |
|---|---|
|
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 |
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
CT index - RA960 (%)
Periodo de tiempo: 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
|
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CT index - LA3rd (mm2)
Periodo de tiempo: 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)
Periodo de tiempo: 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).
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4 hours
|
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CT index - WT3rd (mm)
Periodo de tiempo: 4 hours
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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).
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4 hours
|
|
CT index - WT4th (mm)
Periodo de tiempo: 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
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Pulmonary function tests - VC (l)
Periodo de tiempo: 4 hours
|
Vital capacity was measured (expressed in l).
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4 hours
|
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Pulmonary function tests - FVC (l)
Periodo de tiempo: 4 hours
|
Forced vital capacity was measured (expressed in l).
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4 hours
|
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Pulmonary function tests - FRC (l)
Periodo de tiempo: 4 hours
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Functional residual capacity capacity was measured (expressed in l).
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4 hours
|
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Pulmonary function tests - TLC (l)
Periodo de tiempo: 4 hours
|
Total lung capacity was measured (expressed in l).
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4 hours
|
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Pulmonary function tests - RV (l)
Periodo de tiempo: 4 hours
|
Residual volume was measured (expressed in l).
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4 hours
|
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Pulmonary function tests - FEV1 (l)
Periodo de tiempo: 4 hours
|
Forced expiratory volume in one second was measured (expressed in l).
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4 hours
|
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Pulmonary function tests - DLCO (ml/min/ mmHg)
Periodo de tiempo: 4 hours
|
Diffusion lung capacity for carbon monoxide was measured (expressed in ml/min/ mmHg)
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4 hours
|
Colaboradores e Investigadores
Patrocinador
Publicaciones y enlaces útiles
Publicaciones Generales
- 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.
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio
Finalización primaria (Actual)
Finalización del estudio (Actual)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- P2010/175
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