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Step one: map the timeline
Start by laying out the visit in sequence: booking call, instructions in the days before, arrival and check-in, changing and screening questions, the scan itself, and what happens afterward. Worked example: for a knee MRI, the timeline might note that metal screening happens at check-in, that you lie still for a set period, and that results usually go to the referring clinician rather than being given on the spot. Writing in this order lets readers find their own place in the process and see that each stage is routine and manageable.
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Step two: separate fixed rules from variable details
Every imaging center has rules that rarely change, such as removing metal and disclosing implants, and details that vary, such as fasting, contrast dye or clothing. Label each clearly. In the knee example, say that metal removal applies everywhere, while whether a contrast injection is needed depends on the order from the clinician. Encourage readers to confirm variable items with their own center. This protects the guide from overpromising and teaches patients which questions to ask, instead of giving a single script that may not apply to them.
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Step three: address sensation and worry directly
Describe what the scan feels like in plain terms: the table, the tunnel or open design, the loud knocking, headphones or earplugs, and the instruction to stay still. Worked example: tell the knee patient that the noise is rhythmic and normal, that a call button is within reach, and that they can ask staff about music or a short break plan. Then close with a short checklist of questions to bring, so the reader leaves with action rather than just reassurance. Have a clinician review the final guide before publishing.