User:JRPerez13/X-ray

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The lungs and trapped gas also show up clearly because of lower absorption compared to tissue, while differences between tissue types are harder to see. ====== These cross-sectional images can be combined into a three-dimensional image of the inside of the body. CT scans are more cost effective and faster than magnetic resonance imaging, for example, and can be used for diagnostic and therapeutic purposes in various medical disciplines.

Fluoroscopy is an imaging technique commonly used by physicians or radiation therapists to obtain real-time moving images of the internal structures of a patient through the use of a fluoroscope. In its simplest form, a fluoroscope consists of an X-ray source and a fluorescent screen, between which a patient is placed. However, modern fluoroscopes couple the screen to an X-ray image intensifier and CCD video camera allowing the images to be recorded and played on a monitor. This method may use a contrast material. Examples include cardiac catheterization (to examine for coronary artery blockages) and barium swallow (to examine for esophageal disorders and swallowing disorders). Modern fluoroscopy utilizes shorts bursts of x-rays to lower radiation exposure for the patient and operator.