https://scholars.lib.ntu.edu.tw/handle/123456789/581021
標題: | Improvement of multisource localization of magnetic particles in an animal | 作者: | Lin C.-W Liao S.-H Huang H.-S Wang L.-M Chen J.-H Su C.-H JYH-HORNG CHEN LI-MIN WANG |
公開日期: | 2021 | 卷: | 11 | 期: | 1 | 來源出版物: | Scientific Reports | 摘要: | In this simulation work, the linearized Bregman iterative algorithm was applied to solve the magnetic source distribution problem of a magnetic particle imaging (MPI) system for small animals. MPI system can apply an excitation magnetic field, and the induced magnetic field from the magnetic nanoparticles (MNPs) can be detected by the sensors of MPI system. With a gaussian distribution source at the upper side of the mouse brain, sensors set above the mouse brain and the constant excitation magnetic field, the average deviation of the calculated source distribution from the multiplane scanning along the axis away from the mouse brain and the closest plane scanning are 2.78 × 10–3 and 2.84 × 10–3 respectively. The simulated result showed that combination of multiplane scanning hardly improves the accuracy of the source localization. In addition, a gradient scan method was developed that uses gradient magnetic field to scan the mouse brain. The position of the maximum of the lead field matrix will be controlled by the gradient field. With a set up gaussian distribution source at the bottom of the mouse brain, the average deviation of the calculated source distribution from the gradient scan method and the constant field are 4.42 × 10–2 and 5.05 × 10–2. The location error from the two method are 2.24 × 10–1?cm and 3.61 × 10–1?cm. The simulation showed that this method can improve the accuracy compared to constant field when the source is away from the sensor and having a potential for application. ? 2021, The Author(s). |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105418896&doi=10.1038%2fs41598-021-88847-8&partnerID=40&md5=d3414c41aef00a34bc19af0592e7fd89 https://scholars.lib.ntu.edu.tw/handle/123456789/581021 |
ISSN: | 20452322 | DOI: | 10.1038/s41598-021-88847-8 |
顯示於: | 電機工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。