procedure

• Angiocardiography


  1. ray imaging of the heart, coronary arteries and/or great vessels made visible by injection of a dye directly into the vessel via a catheter
• Angiogram


  A dye/contrast media is injected into the bloodstream and x-rays are taken to visualize the blood vessels
• Angiography


  An examination of blood vessels that uses X-ray, CT or MR imaging and an injection of a radiopaque contrast material to image arteries in the brain, heart, kidneys, gastrointestinal tract, aorta, neck, chest, limbs and pulmonary circulatory system
• Conventional image, CT-scan, MRI


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• Attenuation


  Loss of energy of a beam of radiant energy due to absorption, scattering, beam divergence, and other causes as the beam propagates through a medium
• Barium enema


  1. ray exam that can detect changes or abnormalities in the large intestine (colon)
• Barium sulfate


  A white insoluble radiopaque powder that is used as a contrast material to make certain body parts more visible in x-ray images
• Radiopaque


  Substances that limit the penetration of x-rays and other forms of radiation
• Biopsy


  Process of removing tissue from living patients for diagnostic examination
• Bone scan


  An imaging test in which a radiotracer called technetium-99m is injected into a vein and travels to the bone where it is detected by a special camera
• Cardiac catheterization


  A diagnostic procedure in which a catheter is placed in a large vein in the leg or arm and advanced to the heart to check for blood pressure within the heart, oxygen in the blood, and/or pumping ability of the heart muscle
• 1. arm


  An x-ray image intensifier
• Catheter angiography


  An examination of blood vessels by injecting contrast material directly into an artery through a small plastic tube
• Computed tomography


  Imaging anatomical information from a cross-sectional plane of the body
• CT-angiography


  A method of examining blood vessels utilizing x-rays and injection of iodine-rich contrast material (dye)
• Contrast media


  Also referred to as contrast agent or contrast medium. Any internally administered substance that has a different opacity from soft tissue on radiography or computed tomography
• CT-colonography (CTC)


  Also called virtual colonoscopy. A procedure in which computed tomography (CT) scanning is used to produce detailed pictures of the inside of the colon and rectum
• Diagnostic ultrasound


  Procedure that uses a transducer (probe) to generate high frequency sound waves (2-12MHz) to produce images of the body's internal structures for medical diagnostic purposes
• Doppler ultrasound


  An application of diagnostic ultrasound used to detect moving blood cells or other moving structures and measure their direction and speed of movement
• Electromagnetic radiation


  Radiation consisting of electric and magnetic waves that travel at the speed of light, such as light, radio waves, gamma rays and x-rays
• Gantry


  A frame housing the x-ray tube, collimators, and detectors in a CT or radiation therapy machine, with a large opening into which the patient is inserted; a mechanical support for mounting a device to be moved in a circular path
• MRA


  A method of angiography utilizing the magnetic properties of tissues and body fluids rather than x-rays to record images
• MRCP


  A special type of magnetic resonance imaging (MRI) exam that produces detailed images of the hepatobiliary and pancreatic systems, including the liver, gallbladder, bile ducts, pancreas and pancreatic duct
• MRI


  A diagnostic radiologic modality, in which the nuclei of the hydrogen atoms in a patient are aligned in a strong, uniform magnetic field, absorb energy from tuned radio pulses, then emit radio signals
• Mammography


  Imaging examination of the breast by means of x-rays, used for screening and diagnosis of breast disease. Ultrasound and magnetic resonance may also be used to image the breast
• Nuclear medicine


  The clinical discipline concerned with the diagnostic and therapeutic uses of radionuclides (an isotope of artificial or natural origin that exhibits radioactivity)
• PACS


  A computer system for acquiring, storing, viewing, and managing digital medical imaging studies and related information
• RIS


  A special case of a hospital information system (HIS) tailored to radiological imaging, containing information such as imaging examination orders, schedules on imaging modalities, imaging device parameters, billing codes and information
• Radiography


  Examination of any part of the body for diagnostic purposes by means of x-rays with the findings usually recorded digitally or on film
• Radiolucent


  Almost completely transparent to x-rays
• Radiopaque


  Impenetrable by x-rays or any other form of radiation
• Ultrasonography (UTZ)


  The imaging of body structures by measuring the reflection or transmission of high frequency sound waves
• Venography


  A type of x-ray in which contrast material is injected into a vein to show the details of its structure and any abnormality that may be present
• 1. ray


  The ionizing electromagnetic radiation emitted from a vacuum tube, resulting from the bombardment of the target anode with a stream of electrons from a heated cathode. Ionizing electromagnetic radiation produced by the excitation of the inner orbital electrons of an atom by other processes, such as nuclear delay and its sequelae
• Brachytherapy


  Also called internal radiation therapy. A type of radiation therapy used to treat cancer, involving the placement of a radioactive material, either temporarily or permanently, directly inside the body
• Cobalt (Co-60) RT


  Cobalt-60-based or photon radiation therapy machines are used exclusively to treat brain tumors and abnormalities
• Conformal RT


  Use of a CT image to tailor the radiotherapy beam to the exact size and shape of a tumor
• Cyclotron


  A type of particle accelerator in which charged particles are propelled by an alternating electric field between two large electrodes in a constant magnetic field created by two large
• Gamma camera


  A camera that records the distribution of radiation emitted from a chemical containing a radionuclide that is attracted to a specific organ or tissue of interest
• Gamma radiation


  (Also called gamma rays.) A very high frequency form of electromagnetic radiation that consists of photons emitted by radioactive elements