Search results
Results From The WOW.Com Content Network
A photoplethysmogram (PPG) is an optically obtained plethysmogram that can be used to detect blood volume changes in the microvascular bed of tissue. [1] [2] A PPG is often obtained by using a pulse oximeter which illuminates the skin and measures changes in light absorption. [3]
A man undergoing whole body plethysmography. A modern body plethysmograph using ultrasound. A plethysmograph is an instrument for measuring changes in volume within an organ or whole body (usually resulting from fluctuations in the amount of blood or air it contains).
Respiratory inductance plethysmography (RIP) is a method of evaluating pulmonary ventilation by measuring the movement of the chest and abdominal wall. Accurate measurement of pulmonary ventilation or breathing often requires the use of devices such as masks or mouthpieces coupled to the airway opening.
With air-displacement plethysmography, the volume of an object is measured indirectly by determining the volume of air it displaces inside an enclosed chamber (plethysmograph).
Optoelectronic plethysmography is a method to evaluate ventilation through an external measurement of the chest wall surface motion.. A number of small reflective markers are placed on the thoraco-abdominal surface by hypoallergenic adhesive tape.
Structured Light Plethysmography (SLP) technology is a noninvasive method for collecting accurate representations of chest and abdominal wall movement. A checkerboard pattern of light is projected from a light projector onto the chest of an individual.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Plethysmography&oldid=30207719"This page was last edited on 5 December 2005, at 09:43 (UTC). (UTC).
I had started a page under photoplethysmogram. What convinced me to change to the Photoplethysmograph stub was that the term plethysmograph is much more prevalent in the medical literature than plethysmogram. This page is being constructed with input from the Photoplethysmography@yahoogroups.com group of researchers.--