Field-Free Line Magnetic Particle Imaging Magnet Design Using Nested Halbach Cylinders

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-03-15 DOI:10.1109/LMAG.2022.3159446

Melike Ergor;Ayhan Bingolbali

引用次数: 0

Abstract

Magnetic particle imaging (MPI) is a novel imaging technique that is a promising candidate for practical use in the medical field. The field-free line (FFL) selection field method in MPI provides spatial encoding along a line, resulting in a faster acquisition time and enhanced sensitivity with increased signal-to-noise ratio. To obtain FFL, a magnet system was designed using nested Halbach rings with octagonal-shaped permanent magnets. In this specific study, simulation studies were implemented using this magnet system for a real case. For this purpose, gradient values and stabilities of the magnet system were calculated. In this investigation, a gradient field within 60 mm stability was obtained along each axis. The gradient field attained values up to 6.1 T/m, which is a highly important parameter for spatial resolution in MPI systems.

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基于嵌套Halbach圆柱的无场线磁粉成像磁体设计

磁粉成像（MPI）是一种新的成像技术，在医学领域具有很好的应用前景。MPI中的无场线（FFL）选择场方法提供沿线的空间编码，导致更快的采集时间和增强的灵敏度，同时提高了信噪比。为了获得FFL，使用带有八边形永磁体的嵌套Halbach环设计了磁体系统。在这项具体研究中，使用该磁体系统对实际情况进行了模拟研究。为此，计算了磁体系统的梯度值和稳定性。在这项研究中，沿着每个轴获得了稳定性在60mm以内的梯度场。梯度场的值高达6.1T/m，这是MPI系统中空间分辨率的一个非常重要的参数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.