Flow Math and Bottleneck Deck
Recall how Little's Law and Theory of Constraints apply to radiology capacity decisions.
Little's Law What three variables explain a queue? Work in process, throughput, and time in system. If the queue grows, one or more of those variables changed. Queue vs constraint What is the difference between a queue and a constraint? A queue can reveal a constraint, but they are not always the same thing. Budget pressure Someone says, We need another scanner because patients are waiting. Use when the visible wait may not be hardware capacity. Your line Maybe. Before we request capital, let's show where work waits longest and whether scanner time is the constraint or downstream of one.…
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