plethysmograph

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plethysmograph

[plə′thiz·mə‚graf]
(medicine)
An instrument for measuring changes in the size of a part of the body by measuring changes in the amount of blood in that part.
References in periodicals archive ?
Ranting faster than 1.5 Hz may result in increased resistance as described above and panting 0.5 Hz or less may cause problems with the controlled leak of the body plethysmograph cabinet.
A new method for measuring airway resistance using a body plethysmograph: values in normal subjects and in patients with respiratory diseases.
Volume displacement body plethysmograph for respiratory measurements in human subjects.
Respiration Measurement in the Whole Body Plethysmograph. Available: http://www.buxco.com/downloads/LomaskWBP.pdf [accessed 1 June 2007].
The operating principle of the body plethysmograph is simply based on Boyle's gas law.
We tested lung function with a constant volume body plethysmograph apparatus from Jaeger (Wurzburg, Germany).