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Dye is used as a contrast for x-rays. The dye is radioactive and shows up when the xray is taken. A luminous dye is also used in ophthalmology. It is dropped into the eye and the ophthalmologist can see damage on the cornea for example.
An intravenous pyelogram is a radiographic examination of the kidneys and urinary tract using a radiopaque dye injected into the circulation. It is often abbreviated IVP.
An IVP can show the size, shape, and position of the urinary tract, and it ... During IVP, a dyecalled contrast material is injected into a vein
Urinary tract.
Contrast dye is used to enhance the quality of an x-ray. Contrast dye does not stay in the human body for very long, but it can stay for up to several hours.
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The red dye that is used in a CT scan is a contrast dye. The objective of the dye is so that certain parts of the body will show up clearer in an x-ray. Contrast dye is generally given by IV into the hand or arm.
It is usually a barium or iodine dye
It is usually a barium or iodine dye
It depends wheter you need contrast dye or not. If you need contrast dye for a scan then yes, you will need an IV placed which feels like getting a shot, if not less painful.
Contrast is typically a dye that helps to outline organs or blood vessels. Flouroscopy, MRIs, or CAT scans can see much of the body structures without contrast, but to obtain more detailed images a physician may order the tests to be done "with contrast". Other types of contrast material may be barium (ex. a "barium swallow" or upper GI with contrast shows the esophagus and stomach) or radioactive (ex. for thyroid testing).
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