Table 1.

Measured susceptibility values inside the internal cerebral veins before and at four time points (at intervals of 15 min) after caffeine and acetazolamide administration.

	Pre-administration (in ppm)	Post-administration (in ppm)
		Time 1	Time 2	Time 3	Time 4
Caffeine	0.47 ± 0.06	0.53 ± 0.07	0.58 ± 0.10	0.61 ± 0.08	0.61 ± 0.09
Acetazolamide	0.46 ± 0.08	0.38 ± 0.09	0.36 ± 0.06	0.36 ± 0.08	0.37 ± 0.07