For select examinations,air (negative contrast)and radiopaque contrast are used as a pair to outline mucosal linings,joint interspaces,and passageways.These examinations are considered

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The use of both air (negative contrast) and radiopaque contrast is known as a double-contrast study. This method allows for greater visualization and detail of specific structures, such as mucosal linings and joint interspaces. It is a common and safe technique used in various radiology examinations, including upper gastrointestinal studies and arthrography.

For Select Examinations,air (Negative Contrast)and Radiopaque Contrast Are Used as a Pair