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Imaging and Radiology Guide

Understand the exam’s purpose, preparation, contrast or tracer questions, safety screening, and what happens after the images are taken.

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Find an imaging exam

The exact body area, protocol, use of contrast or tracer, sedation, and clinical purpose matter. A general exam name is not a complete set of instructions.

Important: Do not use this guide to decide whether an implant is MRI-safe, whether contrast is appropriate, or whether an imaging finding is normal. The responsible radiology and clinical teams must review the person’s circumstances and the exact protocol.

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Medical emergency

Call 911 or go to the nearest emergency department.

Call 911

Possible poisoning or a medication error without emergency signs: call Poison Help at 1-800-222-1222 (free, 24/7). For collapse, seizure, breathing trouble or inability to wake, call 911.

These routes apply in the United States. Elsewhere, use local emergency or crisis services.