Glossary

What is Exam prep (NPO and contrast)?

Exam prep is the set of instructions a patient follows before an imaging exam so it can be performed and read properly, such as NPO (nothing by mouth) for a set number of hours, drinking oral contrast, adjusting certain medications as instructed, or arriving early for IV contrast screening. Instructions vary by exam and protocol.

Call Echo nowAgent online
Or listen to a real Echo call
By Alex Le, Echo product teamUpdated August 2026

A patient who arrives without following prep usually cannot be scanned, which costs the practice an expensive scanner slot and the patient a second trip.

Echo Booking sends the prep instructions the practice configures for each exam type by SMS and email at the intervals it sets, and answers the patient's logistics questions about them. Clinical questions about prep go to the practice's staff.

Hear it for yourself

A real call from inquiry to booked appointment.

Press play and read along. Echo answers, switches language mid-call, reads live openings straight out of the calendar while it is still talking, then writes the booking back into it. Nothing is left queued for staff to finish afterwards.
Echo
Caller
switch_language
Echo
Caller
switch_language
Echo
Caller
switch_language
Echo
Caller
Echo
Caller
Echo
Caller
Echo
Caller
Echo
Caller
Echo
Caller
Echo
Caller
list_providers
Echo
Caller
Echo
Caller
list_available_dates
Echo
Caller
list_available_slots
Echo
Caller
Echo
Caller
book_appointment
Echo
Caller
Echo
Caller
book_appointment
Echo
Caller
Echo
Caller
Echo
Caller
Echo
Caller
Echo
Caller
Echo
Caller

Echo in action

0:00 / 0:00

Related terms

All 49 terms in the AI calling glossary.

HIPAA compliant · BAA included

Ready when you are

See the AI receptionist answer your calls.

A 30-minute demo is the fastest way to understand what an AI receptionist can do for your practice.

Demo