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    • 4. 发明授权
    • Magnetic resonance imaging method and system with adaptively selected flip angels
    • 磁共振成像方法和系统具有自适应选择的天使
    • US06230039B1
    • 2001-05-08
    • US09536943
    • 2000-03-28
    • Matthias StuberRene Botnar
    • Matthias StuberRene Botnar
    • A61B500
    • G01R33/5676A61B5/055
    • This invention relates to methods and apparatus for magnetic resonance (MR) imaging of moving parts of a patient in which flip angles for the excitation of nuclear magnetization are adaptively selected during image data acquisition in order to minimize artifacts. In particular, the flip angles are selected so that a smooth distribution of signal-strengths in k-space results even though the order of phase-encoding gradients is also adaptively selected in dependence of the measured instantaneous state of motion of the moving part. The invention also includes MR apparatus for practicing the described methods and software for controlling an MR apparatus to practice the methods.
    • 本发明涉及一种用于患者运动部件的磁共振(MR)成像的方法和装置,其中在图像数据采集期间自适应地选择用于激励核磁化的翻转角以最小化伪像。 特别地,选择翻转角度,使得即使相关编码梯度的顺序也根据所测量的运动部件的瞬时运动状态自适应地选择,所以即使在k空间中的信号强度的平滑分布也是如此。 本发明还包括用于实施所述方法的MR装置和用于控制MR装置来实施该方法的软件。