Health Minister Madeleine Dube says the expensive diagnostic machine was damaged as it was being transported between Bathurst and Campbellton.
Luc Foulem, a spokesman for the Vitality Health Network, says the machine and its trailer were both damaged by the pothole on March 6.
He says a total of about 200 patients in Bathurst, Campbellton and Miramichi have had their MRI sessions rescheduled as a result of the problem.
Foulem says the machine is expected back in operation in Bathurst on Friday, but it won't be mobile until next week after parts arrive for the trailer.
The cost of repairs has not been determined.