The present invention relates to an RF coil device for brain magnetic resonance imaging capable of obtaining improved magnetic field (B1) characteristics using an inductively coupled wireless coil and a high dielectric material, and is disposed rotationally symmetrically on the same radius with respect to the z-axis. a multi-channel transmission/reception coil unit 100 composed of a plurality of loop-type array coils curved to surround the head in the +z-axis direction； A plurality of loop-type inductively coupled wireless coil units 200 corresponding to each of the array coils of the multi-channel transmitting/receiving coil unit and arranged with a larger size outside the multi-channel transmitting/receiving coil unit 100 in a radial direction； And a plurality of high dielectric units 300 spaced apart from each other between the multi-channel transmitting/receiving coil unit 100 and the inductively coupled wireless coil unit 200, and the multi-channel transmitting/receiving coil unit 100 A first transmission/reception coil unit 111 and a second transmission/reception coil unit 112 disposed oppositely to each other； The first transmitting and receiving coil unit 111 and the second transmitting and receiving coil unit 112 and the third transmitting and receiving coil unit 113 and a fourth transmitting and receiving coil unit 114 disposed symmetrically opposite to each other in a direction perpendicular to each other, , The third transmission/reception coil unit 113 and the fourth transmission/reception coil unit 114 have a height greater than that of the first transmission/reception coil unit 111 and the second transmission/reception coil unit 112. .본 발명은 유도 결합형 무선 코일과 고유전체를 이용하여 개선된 자기장(B1) 특성을 얻을 수 있는 뇌 자기공명 영상용 RF코일 장치에 관한 것으로, z축에 대해 동일 반경 상에 회전 대칭되게 배치되되 +z축 방향으로 두부를 감싸도록 만곡 형성된 복수 개의 루프 타입의 어레이 코일로 이루어진 다채널 송수신 코일부(100)와； 상기 다채널 송수신 코일부의 어레이 코일 각각에 대응되어 방사 방향으로 상기 다채널 송수신 코일부(100)의 외측에서 더 큰 사이즈를 갖고 배치되는 루프 타입의 복수 개의 유도결합 무선 코일부(200)와； 상기 다채널 송수신 코일부(100)와 상기 유
