Axially Elongated Field-Free Point Data Acquisition in Magnetic Particle Imaging

Axially Elongated Field-Free Point Data Acquisition in Magnetic Particle Imaging
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磁粒子成像中的轴向拉长无场点数据采集

DOI:
10.1109/tmi.2014.2357077
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发表时间:
2015
影响因子:
10.6
通讯作者:
T. M. Buzug
T. M. Buzug
中科院分区:
工程技术1区
文献类型:
--
作者:
C. Kaethner;M. Ahlborg;G. Bringout;M. Weber;T. M. Buzug

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磁粒子成像(MPI)技术是一种新的成像技术,具有很好的检测体内氧化铁纳米颗粒蓄积的可能性。在MPI中,粒子的激发和信号的产生是利用振荡磁场来实现的。为了实现空间编码,无场点(FFP)被引导通过视场(FOV)。因此,可以通过机械或电磁移动来实现FFP的这种定位。传统上,数据采集路径是平面的2-D或3-D的FFP轨迹。假设人类应用,由这样的轨迹采样的视场的大小受到身体加热和神经刺激的强烈限制。在这项工作中,提出了一种新的获取MPI数据的方法,该方法基于二维FFP轨迹的轴向伸长。结果表明,这种延伸率可以作为一条数据采集路径,在不损失空间分辨率的情况下显著提高采集速度。
The magnetic particle imaging (MPI) technology is a new imaging technique featuring an excellent possibility to detect iron oxide based nanoparticle accumulations in vivo. The excitation of the particles and in turn the signal generation in MPI are achieved by using oscillating magnetic fields. In order to realize a spatial encoding, a field-free point (FFP) is steered through the field of view (FOV). Such a positioning of the FFP can thereby be achieved by mechanical or electromagnetical movement. Conventionally, the data acquisition path is either a planar 2-D or a 3-D FFP trajectory. Assuming human applications, the size of the FOV sampled by such trajectories is strongly limited by heating of the body and by nerve stimulations. In this work, a new approach acquiring MPI data based on the axial elongation of a 2-D FFP trajectory is proposed. It is shown that such an elongation can be used as a data acquisition path to significantly increase the acquisition speed, with negligible loss of spatial resolution.
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
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发表时间: 2009-01-21
影响因子: 3.4
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