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| Radiocontrast ： ウィキペディア英語版 |
Radiocontrast agent
Radiocontrast agents are a type of medical contrast medium used to improve the visibility of internal bodily structures in X-ray-based imaging techniques such as computed tomography (CT), radiography, and fluoroscopy. Radiocontrast agents are typically iodine or barium compounds. When an agent improves visibility of an area, it is called "contrast enhancing".
Magnetic resonance imaging (MRI) functions through different principles and thus utilizes different contrast agents. These compounds work by altering the magnetic properties of nearby hydrogen nuclei.
==Types and uses==
Radiocontrast agents used in X-ray examinations can be grouped based on its use.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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