Provided herein is a radio frequency (RF) coil assembly. The RF coil assembly includes one or more coil elements arranged on a shell, a cable connector electrically connected to the coil elements, the cable connector including a number of inner wires enclosed with an outer insulative jacket, and the cable having a first end connect to a connector and a second end rotatably connected with the shell, and the inner wires exposed outwardly of the outer insulative jacket of the second end of the cable and electrically connected to the coil elements.