GACHON UNIVERSITY OF INDUSTRY-ACADEMIC COOPERATION FOUNDATION;GIL MEDICAL CENTER
发明人:
KIM, DONG CHAN,김동찬,HAN, YE JI,한예지,CHUNG, JUN YOUNG,정준영,KIM, DONG CHANKR,HAN, YE JIKR,CHUNG, JUN YOUNGKR
申请号：
KR1020160143749
公开号：
KR1018207740000B1
申请日:
2016.10.31
申请国别(地区):
KR
年份:
2018
代理人:
摘要：
The present invention relates to a magnetic resonance imaging (MRI) apparatus for angiography. The MRI apparatus includes radio frequency (RF) coils, applies RF purses to a target through the RF coil, and generates blood vessel data by receiving MR signals from the target through the RF coil. The MRI apparatus includes a signal transceiver unit and a control unit. The signal transceiver unit includes: an RF transceiver unit including a signal transmission unit for applying the RF purses to the RF coil and a signal reception unit for receiving the MR signals including properties of time-of-flight (TOF) signals and balanced steady state free precession (bSSFP) signals from the RF coil； and a gradient magnetic field amplifier for controlling a spatial encoding gradient. The control unit includes: an RF control unit which generates RF purses for obtaining the TOF signals and bSSFP signals to transmit the RF purses to the signal transmission unit of the RF transceiver unit； and a gradient magnetic field control unit for generating gradient magnetic field control signals and transmitting the gradient magnetic field control signals to the gradient magnetic field amplifier. Accordingly, the MRI apparatus can obtain accurate angiography images through receiving the blood vessel images with high strength even when the blood flows at a slow rate by applying the RF purses including the TOF and bSSFP at the same time to the blood flows and blood vessels as well as reducing the time of obtaining the blood vessel images therefrom.본 발명은 혈관 조영술용 자기공명영상장치에 관한 것으로서, RF코일을 구비하고, RF코일을 통해 대상체로 RF펄스를 인가하며, RF코일을 통해 대상체로부터 MR신호를 수신하여 혈관 데이터를 생성하는 혈관 조영술용 자기공명영상장치에 있어서, 상기 RF코일에 RF펄스를 인가하는 신호 송신부와 상기 RF코일로부터 TOF 신호와 bSSFP 신호 특성을 포함하는 상기 MR 신호를 수신하는 신호 수신부를 포함하는 RF 송수신부； 및 공간 부호화 경사자장(spatial encoding gradient)을 제어하는 경사자장 증폭기；를 포함하는 신호 송수신부； 그리고 TOF 신호와 bSSFP 신호 획득을 위한 RF펄스를 생성하여 상기 RF 송수신부의 상기 신호 송신부로 전달하는 RF 제어부； 및 경사자장 제어신호를 생성하여 상기 경사자장 증폭기로 전달하는 경사자장 제어부；를 포함하는 제어부；를 포함하는 것을 특징으로 한다. 이
