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1. 发明申请

US20100171497A1 MAGNETIC RESONANCE IMAGING APPARATUS 失效
标题翻译：磁共振成像装置
公开(公告)号：US20100171497A1
公开(公告)日：2010-07-08
申请号：US12650266
申请日：2009-12-30
申请人： Yuji IWADATE , Kenichi KANDA
发明人： Yuji IWADATE , Kenichi KANDA
IPC分类号： G01R33/48
CPC分类号： G01R33/5676 , G01R33/3415 , G01R33/543
摘要： A magnetic resonance imaging apparatus includes a scan execution unit configured to execute a regular scan in which a navigator sequence for generating a magnetic resonance signal in a navigator area containing a region of interest moving with a biological movement of a subject and an imaging sequence for generating a magnetic resonance signal in an imaging area of the subject are carried out, and a signal processing unit configured to detect a position of a region of interest based on a magnetic resonance signal generated by a navigator sequence in the regular scan and to generate an image based on the detected position and the magnetic resonance signal generated by the imaging sequence. The signal processing unit is configured to generate an intensity profile with respect to the magnetic resonance signal generated by a navigator sequence in the pre-scan and received at each of the coil elements, determine the gradient polarity of the profile line corresponding to the high-signal substance in the predetermined direction in the generated intensity profile, and to select a coil element that received a magnetic resonance signal of the intensity profile highest in maximum signal intensity among the intensity profiles the gradient polarity of which was determined to face upward. The position of the region of interest is detected based on a magnetic resonance signal generated by a navigator sequence in the regular scan and received at the selected coil element.
摘要翻译：磁共振成像装置包括：扫描执行单元，被配置为执行常规扫描，其中，在包含感兴趣区域的导航区域中产生磁共振信号的导航序列，所述导航区域包含随着被摄体的生物运动移动的感兴趣区域，以及用于生成执行被检体的成像区域的磁共振信号，以及信号处理部，其基于由常规扫描中的导航序列生成的磁共振信号来检测感兴趣区域的位置，并生成图像基于由成像序列产生的检测位置和磁共振信号。信号处理单元被配置为产生相对于由预扫描中的每个线圈元件接收的导航序列产生的磁共振信号的强度分布，确定对应于高频信号的轮廓线的梯度极性，在所产生的强度分布中沿预定方向的信号物质，并且选择线性元件，其接收在梯度极性被确定为面向上的强度分布中最大信号强度最高的强度分布的磁共振信号。感兴趣区域的位置是基于由常规扫描中的导航序列产生的并在所选择的线圈元件处接收的磁共振信号来检测的。

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