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Externally visible physical characteristics of a body.

Systematic and thorough inspection of the patient for physical signs of disease or abnormality.

Recording of change in the size of a part as modified by the circulation in it.

Recording changes in electrical impedance between electrodes placed on opposite sides of a part of the body, as a measure of volume changes in the pa…

Measurement of the volume of gas in the lungs, including that which is trapped in poorly communicating air spaces. It is of particular use in chronic…

Radiographic visualization of the cerebral ventricles by injection of air or other gas.

Simultaneous and continuous monitoring of several parameters during sleep to study normal and abnormal sleep. The study includes monitoring of brain …

Examination of the portal circulation by the use of X-ray films after injection of radiopaque material.

Laboratory processes prior to specimen analysis. These processes include study design, compliance of the subjects investigated, compliance in adheren…

The science dealing with the correlation of the physical characteristics of a stimulus, e.g., frequency or intensity, with the response to the stimul…

Evaluation of the contour of the PULSE waves which vary in different parts of the circulation and depend on physiological as well as pathophysiologic…

Contrast imaging generated from the measurements of phase shift changes of light waves as they pass through transparent objects of varying thickness …

The observation, either continuously or at intervals, of the levels of radiation in a given area, generally for the purpose of assuring that they hav…

Graphic tracing over a time period of radioactivity measured externally over the kidneys following intravenous injection of a radionuclide which is t…

The measurement of radiation by photography, as in x-ray film and film badge, by Geiger-Mueller tube, and by SCINTILLATION COUNTING.

Imaging of a ventricle of the heart after the injection of a radioactive contrast medium. The technique is less invasive than cardiac catheterization…

Radiography of the SALIVARY GLANDS or ducts following injection of contrast medium.

The measurement of subcutaneous fat located directly beneath the skin by grasping a fold of skin and subcutaneous fat between the thumb and forefinge…

Serologic tests for syphilis.

Measurement of blood flow based on induction at one point of the circulation of a known change in the intravascular heat content of flowing blood and…

Imaging the temperatures in a material, or in the body or an organ. Imaging is based on self-emanating infrared radiation (HEAT WAVES), or on changes…

The use of a device composed of thermoluminescent material for measuring exposure to IONIZING RADIATION. The thermoluminescent material emits light w…

Measurement of the temperature of a material, or of the body or an organ by various temperature sensing devices which measure changes in properties o…

Use of a thrombelastograph, which provides a continuous graphic record of the physical shape of a clot during fibrin formation and subsequent lysis.

Technique used in AYURVEDIC MEDICINE, and EAST ASIAN TRADITIONAL MEDICINE, in which reading PULSE is used in the diagnosis of diseases.

Radiography of any part of the URINARY TRACT.

Recording of the moment-to-moment electromotive forces of the heart on a plane of the body surface delineated as a vector function of time.

Radionuclide ventriculography where a bolus of radionuclide is injected and data are recorded from one pass through the heart ventricle. Left and rig…

The signs of life that may be monitored or measured, namely pulse rate, respiratory rate, body temperature, and blood pressure.

The measurement around the body at the level of the ABDOMEN and just above the hip bone. The measurement is usually taken immediately after exhalatio…