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angiography
radiography of vessels after the injection of a radiopaque contrast medium
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coronary angiography
angiography of the coronary arteries to determine any pathological obstructions of the arteries that supply blood to the heart
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angiogram
radiographic image of the heart and blood vessels obtained after the injection of a contrast medium
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barium sulfate
a contrast medium used in diagnostic contrast studies of the gastrointestinal system
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catheter
a hollow, flexible tube that can be inserted into a vessel or cavity of the body to inject or remove fluids
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cineradiography
the filming with a movie camera of the images that appear on a fluorescent screen, especially those images of body structures that have been injected with a nontoxic radiopaque medium; used for diagnostic purposes
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coldspot
light shades of grey on a scan that indicate a decreased uptake of a radiopharmaceutical substance
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contrast medium
in radiology, a substance that is injected into the body, introduced via catheter or swallowed, to facillitate radiographic imaging of internal structures that otherwise are difficult to visualize on x-ray films
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gamma camera
a device that uses the emission of light from a crystal struck by gamma rays to produce an image of the distribution of radioactive material in a body organ
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gamma rays
high energy waves emitted by radioactive substances
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half-life
the time required for a radioactive substance to lose 50% of its activity through decay
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hotspot
darker shades of grey on a scan that indicate an increased uptake of a radiopharmaceutical substance
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in vitro
a biological reaction occuring in laboratory apparatus, such as in a test tube or culture medium
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isotope
one of two or more forms of a chemical element having almost identical properties
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lumen
a tubular cavity or the channel within any organ or structure of the body
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myelogram
radiograph of the spinal canal after injection of a contrast medium
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percutaneous approach
technique in which a catheter is introduced through the skin into an organ, body cavity, or vessel to perform an interventional procedure such as fluid drainage or stone removal
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radiation
emission of xrays from a common source; used for therapeutic and diagnostic purposes
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radioactive
pertaining to a substance capable of emitting radiant energy
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radioisotope
a radioactive isotope of an element; used for therapeutic and diagnostic purposes
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radiopharmaceutical
- radioactive element occuring either as an individual element or as an element attached to another substance called a carrier
- used in testing the location, size, outline, or function of tissues, organs, vessels, or body fluids
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shield
a protective device, usually containing lead, to block radiation absorption by the body
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tracer study
study in which radionucleotides are used as tags, attached to a chemical, and followed as they move through the body
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ultrasound tests
studies in which ultrasound images of the internal structures of the body are produced using sound waves
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uptake
absorption of a radiopharmaceutical into tissues or organs of the body
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fluor/o
luminous, fluorescent
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later/o
side, to one side
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poster/o
back (of body), behind, posterior
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radi/o
radiation, x-ray, radius (lower arm bone on thumb side)
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anteroposterior
from the front to the back of the body
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fluoroscope
an instrument used for immediate projection of a radiographic image on a fluorescent screen for visual examination
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lateral
pertaining to one side of the body
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mediolateral
pertaining to the middle and the side of the body
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posterolateral
pertaining to the back and side of the body
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proximal
pertaining nearer to a point of reference, usually the trunk of the body, when compared with another part of the body
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radiography
the process of recording an x-ray
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ventr/o
belly, belly-side
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sonogram
an image of the internal structures of the body obtained through the use of high-frequency sound waves
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therapeutic
pertaining to a treatment that is beneficial to the body
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tomography
radiographic technique that produces a film representing a detailed cross-section of a tissue structure
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ventral
pertaining to the front side of the body
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abduction
lateral movement of a limb away from the body
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adduction
lateral movement of a limb toward the body
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echogram
radiographic image that is produced when ultrasound echo patterns reflect off tissues of different densities
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epigastric
pertaining to the region of the abdomen above the stomach
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hypogastric
pertaining to the region of the abdomen below the stomach
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infracostal
pertaining to the area below the ribs
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intercostal
pertaining to the area between the ribs
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intravenous
pertaining to within a vein
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isothermal
having equal temperature
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perimetry
act of measuring a border or edge of the body
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retropharynx
the posterior portion of the throat
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substernal
pertaining to the area below the sternum (breastbone)
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transabdominal
pertaining to across or through the abdominal wall
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-graph
instrument for recording
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-graphy
process of recording
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arteriogram
a radiograph of an artery after the injection of a radiopaque contrast medium
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cardiograph
an instrument for recording the electrical activity of the heart
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arthrography
radiography of a joint after the injection of a contrast medium
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radiolucent
substances that allow x-rays to penetrate with a minimum of absorption
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radiopaque
substances that do not permit the passage of x-rays or other radiant energy
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