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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 technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit b…

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…

Externally visible physical characteristics of a body.

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

Act of eliciting a response from a person or organism through physical contact.

Examinations that evaluate functions of the pituitary gland.

Tests that evaluate the adrenal glands controlled by pituitary hormones.

Methods used for the assessment of placental function.

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…

Laboratory analysis of pleural fluid obtained by thoracentesis, useful in evaluating pleural effusion and empyema.

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

Deliberate introduction of air or gas into the mediastinum as an aid to examination and diagnosis.

Deliberate introduction of air into the peritoneal cavity.

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…

Determination of the nature of a pathological condition or disease in the OVUM; ZYGOTE; or BLASTOCYST prior to implantation. CYTOGENETIC ANALYSIS is …

Determination of the nature of a pathological condition or disease in the postimplantation EMBRYO; FETUS; or pregnant female before birth.