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A non-specific host defense mechanism that removes MUCUS and other material from the LUNGS by ciliary and secretory activity of the tracheobronchial …

The simultaneous use of multiple laboratory procedures for the detection of various diseases. These are usually performed on groups of people.

The amount of force generated by MUSCLE CONTRACTION. Muscle strength can be measured during isometric, isotonic, or isokinetic contraction, either ma…

X-ray visualization of the spinal cord following injection of contrast medium into the spinal arachnoid space.

The recording of muscular movements. The apparatus is called a myograph, the record or tracing, a myogram. (From Stedman, 25th ed)

The insertion of a catheter through the skin and body wall into the kidney pelvis, mainly to provide urine drainage where the ureter is not functiona…

The systematic checking of the condition and function of a patient's CENTRAL NERVOUS SYSTEM during disease periods or following injuries, using vario…

A prenatal ultrasonography measurement of the soft tissue behind the fetal neck. Either the translucent area below the skin in the back of the fetal …

Measurement of tooth characteristics.

Measurement of the blood pressure of the retinal vessels. It is used also for the determination of the near point of convergence (CONVERGENCE, OCULAR…

Examination of the interior of the eye with an ophthalmoscope.

The use of a radiation monitoring device composed of material which emits light after being illuminated. The amount of light emitted is proportional …

The measurement of an organ in volume, mass, or heaviness.

The measurement of frequency or oscillation changes.

Measurement of the OSMOLARITY of solutions or BODY FLUIDS.

A status with BODY WEIGHT that is above certain standards. In the scale of BODY MASS INDEX, overweight is defined as having a BMI of 25.0-29.9 kg/m2.…

The determination of oxygen-hemoglobin saturation of blood either by withdrawing a sample and passing it through a classical photoelectric oximeter o…

Scales, questionnaires, tests, and other methods used to assess pain severity and duration in patients or experimental animals to aid in diagnosis, t…

An evanescent cutaneous reaction occurring when antibody is injected into a local area on the skin and antigen is subsequently injected intravenously…

The detection of genetic variability (e.g., PHARMACOGENOMIC VARIANTS) relevant to PHARMACOGENETICS and PRECISION MEDICINE. The purpose of such geneti…

Radiographic visualization or recording of a vein after the injection of contrast medium.

The techniques used to draw blood from a vein for diagnostic purposes or for treatment of certain blood disorders such as erythrocytosis, hemochromat…

Graphic registration of the heart sounds picked up as vibrations and transformed by a piezoelectric crystal microphone into a varying electrical outp…

Investigative and diagnostic methods and procedures based on the photoacoustic effect, which is the generation of SOUND WAVES from the absorption of …

The photography of images produced on a fluorescent screen by X-rays.

Making measurements by the use of stereoscopic photographs.

Method of making images on a sensitized surface by exposure to light or other radiant energy.

Photographic techniques used in ORTHODONTICS; DENTAL ESTHETICS; and patient education.

Photography of objects viewed under a microscope using ordinary photographic methods.

Plethysmographic determination in which the intensity of light reflected from the skin surface and the red cells below is measured to determine the b…