Glossary
Why the appointment book does not know the exam needs contrast
With contrast and without contrast are two different exams as far as the appointment book is concerned. They change room time, equipment, the staff who must be present, and what the patient has to bring or comply with before arriving.
Why does the appointment book not know the exam needs contrast?
Because the detail sits where the system does not look. The physician ticks a box on a printed form, or writes it in the margin, and what travels to scheduling is the exam name. The patient arrives with the paper in hand and only then does someone read the difference.
Contrast use has a standing US reference: the American College of Radiology's Committee on Drugs and Contrast Media publishes the ACR Manual on Contrast Media, the document US radiologists work from. The appointment book still sees only the exam name someone typed.
| What the order carries | What scheduling needs |
|---|---|
| Exam name in free text | A bookable service from the catalogue |
| With contrast ticked by hand | A slot of different length and a room with the equipment free |
| Anatomical area described in a phrase | The exact code for the billable service |
| Prior requirements from the protocol | A condition that blocks the appointment until they are met |
It gets confused with preparation in general. Exam preparation includes contrast when it applies, and contrast also decides which slot gets reserved, a scheduling decision that comes before any message to the patient. A CT scan booked as though it were without contrast collapses on the day.