What type of radiograph should be taken before a contrast study?

Before conducting a contrast study, it is essential to obtain a survey radiograph. This type of radiograph serves as a baseline image that allows the clinician to assess the anatomy and any pre-existing conditions that might affect the interpretation of the contrast-enhanced images. By having this initial image, it becomes easier to detect any abnormalities or changes that the contrast medium may highlight during the study.

A survey radiograph is key in helping to determine the necessity of a contrast study, as it can reveal information about the structure and any potential obstructions or anomalies. It also aids in planning the procedure, ensuring that the contrast can be administered safely and effectively.

Fluoroscopy, diagnostic radiographs, and post-contrast radiographs serve different purposes in the imaging process. Fluoroscopy is used for real-time imaging, often during procedures; diagnostic radiographs capture images to aid in diagnosis but do not serve as a baseline prior to contrast; and post-contrast radiographs are taken after the contrast has been administered to visualize the area of interest. Each of these has its role, but the survey radiograph is specifically important in the context of preparing for a contrast study.