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Measurements of the thickness of the CEREBRAL CORTEX often detected automatically from medical imaging. Abnormal changes in cortical thickness (e.g.,…

Measurement of relative composition of different BREAST tissue types often determined from MAMMOGRAPHY; ULTRASONOGRAPHY; or MRI.

Radiography of the bronchial tree after injection of a contrast medium.

Inflammatory marker measured in blood.

Continuous recording of the carbon dioxide content of expired air.

Visualization of the heart structure and cardiac blood flow for diagnostic evaluation or to guide cardiac procedures via techniques including ENDOSCO…

The volume of BLOOD passing through the HEART per unit of time. It is usually expressed as liters (volume) per minute so as not to be confused with S…

A type of impedance plethysmography in which bioelectrical impedance is measured between electrodes positioned around the neck and around the lower t…

Monitoring of FETAL HEART frequency before birth in order to assess impending prematurity in relation to the pattern or intensity of antepartum UTERI…

A measurement of the thickness of the carotid artery walls. It is measured by B-mode ULTRASONOGRAPHY and is used as a surrogate marker for ATHEROSCLE…

The transit time of an AORTIC PRESSURE wave between the COMMON CAROTID ARTERY and the COMMON FEMORAL ARTERY. It is a standard measure of ARTERIAL STI…

Assays that measure the rate of migration of MACROPHAGES. They may involve the use hollow plastic chamber, sealed at one end with a porous membrane a…

The measurement of the dimensions of the HEAD.

Radiography of the ventricular system of the brain after injection of air or other contrast medium directly into the cerebral ventricles. It is used …

A parameter usually used in PRENATAL ULTRASONOGRAPHY to measure the length of the uterine neck (CERVIX UTERI). Cervical length or its shortening is u…

Fiberoptic endoscopy designed for duodenal observation and cannulation of VATER'S AMPULLA, in order to visualize the pancreatic and biliary duct syst…

Radiography of the gallbladder after ingestion of a contrast medium.

The shortest duration of an electrical stimulus where the threshold amplitude is twice the rheobase - the minimum required for eliciting an ACTION PO…

A non-invasive imaging method that uses computed tomographic data combined with specialized imaging software to examine the colon.

Measurement of the thickness of the CORNEA.

The measurement of curvature and shape of the anterior surface of the cornea using techniques such as keratometry, keratoscopy, photokeratoscopy, pro…

Immunoelectrophoresis in which immunoprecipitation occurs when antigen at the cathode is caused to migrate in an electric field through a suitable me…

The circulation in a portion of the body of one individual of blood supplied from another individual.

In utero measurement corresponding to the sitting height (crown to rump) of the fetus. Length is considered a more accurate criterion of the age of t…

Radiography of the URINARY BLADDER.

A method for the study of certain organic compounds within cells, in situ, by measuring the light intensities of the selectively stained areas of cyt…

An image guided examination of the NASOLACRIMAL APPARATUS including NASOLACRIMAL DUCT.

Radiographic examination of the process of defecation after the instillation of a CONTRAST MEDIA into the rectum.

The measurement of the density of a material by measuring the amount of light or radiation passing through (or absorbed by) the material.

Methods and procedures for the diagnosis of diseases of the eye or of vision disorders.