Table I.

Status of the in‐ and outflow valves, the bladder filling, and the subjective sensations during the test run prior to the MR‐scanning (t = test run condition)

	tREST	tINFUSION	tSENSATION	tDRAIN 1	tDRAIN 2
Duration	12 s	variable, mean of all subjects: 9.8 ± 1.9 s (range: 6–12 s)	12 s	30 s	30 s
Status of the valves at the in‐ and outflow tube	Valve 1 closed, Valve 2 open	Valve 1 open, Valve 2 closed	Valve 1 open, Valve 2 closed	Valve 1 closed, Valve 2 open	Valve 1 closed, Valve 2 open
Filling status of the bladder	Bladder is empty	Start of bladder filling with cold saline (4–8°C)	Bladder filling with cold saline (4–8°C)	Bladder is drained	Bladder is empty
Subjective sensation	No bladder cold sensation	No bladder cold sensation	First sensation of bladder cooling (=start of SENSATION), which slowly increases with further filling	Further increase in cold sensation up to 12 s, followed by a continuous decline in bladder cold sensation	Slight bladder cold sensation, which further declines until it is completely absent