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    • 1. 发明公开
    • 멀티 슬라이스 자기 공명 투영 방법
    • 多片MR成像方法和MRI设备
    • KR1020010073217A
    • 2001-07-31
    • KR1020010020409
    • 2001-04-17
    • 지이 요꼬가와 메디칼 시스템즈 가부시끼가이샤
    • 미야모토쇼에이오시오고이치고스기스스무
    • G01N24/08
    • G01R33/4835G01R33/5618
    • PURPOSE: To actually apply forced recovery pulses to a multi-slice method by applying refocus pulses selecting the slice only after a pulse sequence per slice within repetitive time and then applying forced recovery pulse rows. CONSTITUTION: A sequence memory circuit 6 operates a gradient magnetic field drive circuit 3 in accordance with commands from a computer 7 to generate a gradient magnetic field from a gradient magnetic field coil 1g of a magnet assembly 1, operates a gate modulation circuit 8 to modulate a high frequency output signal from an RF oscillation circuit 9 and apply it to an RF power amplifier 4, and applies it to a transmission coil 1t of the magnet assembly 1 after amplifying power to transmit RF pulses. Here, a refocus pulse selecting slice only is applied after a pulse sequence per slice within repetitive time, and then forced recovery pulse row selecting slice only is applied in multi-slice MR imaging.
    • 目的:通过应用再聚焦脉冲实际应用强制恢复脉冲到多重切片方法,仅在重复时间内每片切片脉冲序列之后选择切片,然后施加强制恢复脉冲行。 构成:序列存储器电路6根据来自计算机7的命令操作梯度磁场驱动电路3,以从磁体组件1的梯度磁场线圈1g产生梯度磁场,操作门调制电路8以调制 来自RF振荡电路9的高频输出信号并将其施加到RF功率放大器4,并且在放大功率以将其发射RF脉冲之后将其施加到磁体组件1的传输线圈1t。 这里,仅在重复时间内每片切片的脉冲序列之后施加再聚焦脉冲选择切片,然后仅在多切片MR成像中应用强制恢复脉冲行选择切片。