Lung tissue volume estimated by simultaneous radiographic and helium dilution methods.
نویسندگان
چکیده
منابع مشابه
Lung tissue volume estimated by simultaneous radiographic and helium dilution methods.
The pulmonary total tissue volume (blood, extravascular water, and dry tissue volume) was measured by finding the difference between the radiographic displacement volume of the thorax (RDVT) and the lung gas volume. Simultaneous determinations of RDVT and gas volume were made in 10 healthy subjects sitting upright. RDVT was determined from posteroanterior and lateral chest radiographs, a comput...
متن کاملNitrogen washout/washin, helium dilution, and computed tomography in the assessment of end-expiratory lung volume
INTRODUCTION End expiratory lung volume (EELV) measurement in the clinical setting is routinely performed using the helium dilution technique. A ventilator that implements a simplified version of the nitrogen washout/washin technique is now available. We compared the EELV measured by spiral computed tomography (CT) taken as gold standard with the lung volume measured with the modified nitrogen ...
متن کاملNitrogen washout/washin, helium dilution and computed tomography in the assessment of end expiratory lung volume
Introduction End expiratory lung volume (EELV) measurement in the clinical setting is routinely performed using the helium dilution technique. A ventilator that implements a simplified version of the nitrogen washout/washin technique is now available. We compared the EELV measured by spiral computed tomography (CT) taken as gold standard with the lung volume measured with the modified nitrogen ...
متن کاملThe Volume of the Lung Determined by Helium Dilution. Description of the Method and Comparison with Other Procedures.
The use of the foreign gas, helium, for determination of the pulmonary capacity has been reported previously in preliminary form (1). The present report concerns further experience with this method and comparison of results obtained with results by the Christie method (2) and by the Lassen, Cournand, and Richards modification of the Christie method (3, 4) in normal and emphysematous subjects. F...
متن کاملMultiple breath helium dilution measurement of lung volumes in adults.
This manuscript recommends techniques (methodology) for the measurement of total lung capacity (TLC), functional residual capacity (FRC) and residual volume (RV) in adults using the closed-circuit helium dilution method. Lung volumes were first measured using a hydrogen gas dilution technique about 200 yrs ago. Helium replaced hydrogen for safety reasons 40–50 yrs ago when clinicians started to...
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ژورنال
عنوان ژورنال: Thorax
سال: 1982
ISSN: 0040-6376
DOI: 10.1136/thx.37.9.676