A schematic MRI acquisition budget is repeated line time. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
One line has a checked time
One acquisition line takes 8 s in this schematic scan.
tline=8s
Repeated lines give scan time
For 3 lines, the total time is 24 s. This is acquisition scheduling only, not image reconstruction.