A method of recording the changes in the volume of organs, mainly used to measure blood flow in the limbs.
A noninvasive diagnostic technique that measures small changes in the volume of a body part; often used to diagnose abnormal conditions of arteries and veins.
The process of recording the changes in the volume of a limb caused by alterations in blood pressure. The limb is inserted into a fluid-filled watertight casing (oncometer) and the pressure variations in the fluid are recorded.
An apparatus for estimating changes in the size of any part placed in the apparatus; in this way changes in the volume of blood in a part can be measured. For example, researchers may use a penis plethysmograph to measure their subjects’ ability to respond sexually to certain stimuli.
A device for finding variations in the size of a part owing to variations in the amount of blood passing through or contained in the part.
The use of a plethysmograph to record the changes in volume of an organ or extremity.
A diagnostic examination involving a patient being seated within a specialized enclosure known as a plethysmograph, where they breathe through a mouthpiece. During this procedure, pressure and air flow measurements are gathered to assess the total volume of the lungs.
A method for approximating blood circulation within vessels by gauging alterations in the dimensions of a body region. Penile plethysmography is occasionally employed to examine erectile dysfunction in men, determining if erections occur during sleep.