A MRI/CAT scan patient arm support assembly comprising a lower frame including a pair of horizontal side members positioned parallel to each other, at least one cross member connecting the pair of horizontal side members, the pair of horizontal side members and the at least one cross member forming a MRI/CAT scan bed-engaging surface, an upper frame connected to and extending angularly upward from the lower frame, the upper frame having a pair of vertical side members positioned parallel to each other, a handle interconnecting the pair of vertical side members, the handle oriented in a substantially horizontal manner and positioned above the lower frame, the handle vertically adjustable along the vertical side members, and at least one removable armrest connected to one of the vertical side members of the upper frame, the removable armrest rotatably adjustable about the vertical side member and adjustable along the vertical side member.