The MRI on Rose's lower back and right hip was taken on Wednesday night at Rush University Medical Center.
Rose will be re-examined by team physician Brian Cole on Saturday in Dallas, where he'll be attending All-Star Game festivities.
Rose was driving for a layup in the first quarter when Dwight Howard fouled him, dropping Rose flat on his back. Rose eventually shot his free throw and left the game. An X-ray in the United Center showed no structural damage, and that was confirmed by the MRI.
The second-year guard was selected to the Eastern Conference All-Star team, becoming the Bulls' first All-Star since Michael Jordan in 1998. Rose also is scheduled to defend his Skills Challenge title during All-Star festivities Saturday in Dallas.
NBA spokesman Tim Frank said there is no deadline for Rose to decide whether he'll able to participate in this weekend's activities.
"The guy earned his chance to be here, and we want to give him every chance to play," Frank said from Dallas. "I wouldn't say we have a contingency plan, but I'm sure [NBA vice president of basketball operations Stu Jackson] has a list of players who he could replace someone with if someone can't participate.
"We're optimistic he'll be here."