🚀 go-pugleaf

I am wondering whether an NMR machine could be run 'inside-out'. As
far as I understand them, NMR imagers consist of a toroidal magnet
system, through which the subject is placed. Would it be possible to
use a bar magnet type of configuration so that the subject didn't
need to be placed within the physical magnet structure?

i.e.
this:				instead of this:
...........			    MMMMMMM
...........			  MMMMMMMMMMM
...........			MMMMMMMMMMMMMMM
MMMMMM.....			MMMM...SS..MMMM
MMMMMM.....			MMMM.SSSS..MMMM
...........			MMMM..SS...MMMM
.SS....S...			MMMM....S..MMMM
SSSS...SS..			MMMMMMMMMMMMMMM
..SSSSSS...			  MMMMMMMMMMM
...........			    MMMMMMM

where:
M = magnet structure
. = magnetic field
S = subject


Can it be done? What range would the system typically be capable
of measuring? How big would it be? How much power would be required?

Any help much appreciated. Thanks in advance,
Geoff Thomas