Every unit has its own queue, its own preparation and its own budget

Why one page per unit?

Because the budget lives there. The head of radiology answers for machine utilisation and for the waiting list. The head of laboratory answers for volume and turnaround times. An institutional conversation about order completion dissolves across management layers, while a conversation about the MRIs that were ordered and never booked has an owner, a budget and some urgency.

The volume concentrates too: in practice most of what gets referred is exams, and five units cover almost all of it. That is why these five pages exist before any other segmentation, and why the 30 per-exam guides hang off them.

How does each unit's queue differ?

In the preparation and in the cost of a lost hour. In laboratory a good share is walk-in demand, and the one who falls through is the patient who never went to give the sample. In radiology the slot is expensive, an MRI drags a contrast protocol, and an empty hour is lost outright.

In gastroenterology the preparation for a colonoscopy runs for days, and booking it badly means losing the slot and repeating the whole preparation. In cardiology the volume sits in follow-up checks that fall through with nobody missing them until the event. In dental the queue is produced by staged treatment: a scaling that never got its second session.

Where does the per-exam detail live?

In the per-exam guides. Each of the 30 hangs off one of these five units and goes down to the level of the order: what it is called, which aliases it travels under, what preparation it demands. The unit explains the shape of the queue and the guide resolves the case in your hand.

Two readings close the picture: booking more without care makes no-show worse, which is why the order of operations matters, and stage-by-stage measurement, which is how you know which of the five units to start with. The shared vocabulary sits in the glossary.