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The magnetic field needed to create radiofrequency signals in MR imaging. The variation in magnetic field strength induces electrical signals from the body which are converted by MR systems into diagnostic images.

Radiology technique that uses electromagnetic energy and radio waves to visualize the heart, blood vessels, and blood flow.

Radiology technique that uses magnetic forces -- or radio waves -- to produce images of body structures, including changes in the normal characteristics of organs and tissues. It enables the production of detailed pictures of internal human anatomy without the use of X-rays.

Transfer of disease-producing agents (such as cancer cells or bacteria) from an original site of disease to another part of the body with development of a similar lesion in the new location.

Surgery of the chest, abdomen, spine and pelvis, done with the aid of a viewing scope, and specially designed surgical instruments. The scope allows the surgeon to perform major surgery through several tiny openings without the need for a large incision.

Portable digital X-ray unit used in surgery wards and emergency rooms. Shaped like a giant C, the mobile unit can be positioned over patients and beds to image the area of interest.

Examinations made by mobile X-ray units. Also commonly referred to as "portable or bed-side" imaging.

Often used to describe a therapeutic method or agent, such as surgery, chemotherapy, or electrotherapy that involves the physical treatment of a disorder. It is also used to define a category of medical devices, such as CT, MR, or PET.

The fusion of molecular biology, genetic engineering, immunology, cytology (study of cells), and biochemistry with imaging. Advanced examinations are used to evaluate body tissue activity and the movement of blood throughout a tissue in response to genetic, physiological, or therapeutic challenges, such as the uptake of sugar by cells in the heart or brain.

New field of medicine that includes Molecular Diagnostics and Molecular Imaging. Molecular Diagnostics utilizes biomarkers applied to tissue samples to identify the presence of disease in individuals long before symptoms of the disease are apparent. Molecular Imaging uses disease specific imaging agents to show the presence and extent of the disease and disease specific therapy agents to treat the disease non-invasively.

Thin, cross sectional images or X-ray pulses that spin around the body to obtain a more defined multi-dimensional or 3D image. CT scanners range from one to 64 "slices" or X-ray pulses. Also referred to as channels.

Use of imaging tests to evaluate muscles, bones, tendons, ligaments and soft tissues of the body.

A condition that occurs when a blood clot blocks the coronary artery and starves the heart of oxygen. Without a constant supply of oxygen-rich blood, heart muscle cells die, causing permanent damage to the heart muscle and possible death to the patient. Also known as a heart attack.

Diagnostic study that compares blood flow to the heart muscle during stress to the blood flow to the heart muscle at rest. Abnormal flow at stress only indicates Coronary Artery Heart Disease whereas abnormal flow on both stress and rest indicates scar tissue of the heart muscle. Both the stress and rest studies utilize radioactive tracers which localize in heart muscle tissue and the localization is imaged with a Nuclear Camera and the images displayed for diagnosis after being processed with a computer.