PURPOSE: A magnetic resonance imaging device and a controlling method thereof are provided to reduce preparing time for photographing by detecting the diagnosing position of a patient and move the position inside the magnetic assembly of the magnetic resonance imaging device. CONSTITUTION: An administrator transfers a patient to the patient table of a magnetic resonance imaging device(200). The administrator installs an RF coil at the diagnosing position of the patient(210). A patient positioning system begins the inserting operation of a transfer part after the RF coil is installed at the diagnosing position of the patient(220). The patient positioning system confirms whether the RF coil or a signal receiving part installed at the RF coil or a tag terminal receives a signal(230). The position information of the diagnosing position of the patient or the RF coil is calculated(240). The transferring distance of the transfer part is controlled according to the position information of the diagnosing position of the patient or the RF coil(250). [Reference numerals] (200) Transferring a patient； (210) Installing an RF coil at the diagnosing position of the patient； (220) Beginning the inserting operation of a transfer part； (230) Sensing a signal of a tag or a signal transmitting unit installed in magnet from the RF coil, a tag terminal or a signal receiving unit installed at the diagnosing position of the patient； (240) Calculating the position information of the diagnosing position of the patient or the RF coil； (250) Controlling the transferring distance of the transfer part according to the position information of the diagnosing position of the patient or the RF coil； (260) Photographing； (AA) Start； (BB) No； (CC) Yes； (DD) End환자를 촬영하기 전에 소요되는 준비 시간을 줄일 수 있는 자기 공명 영상 장치 및 그 제어 방법을 게시한다. 자기 공명 영상 장치는 자석 어셈블리와, 상기 자석 어셈블리 내부로 환자를 삽입하는 이송부와 이를 지지하는 고정부로 형성되는 환자 테이블을 구비하며, 자석 어셈블리의 임의의 지점에 설치되는 태그 또는 신호 송신부와, 환자의 진단부위 또는 환자의 진단부위에 부착되는 RF코일에 설치되는 태그 단말기 또는 신호 수신부와, 이송부에 의
