Kiwa, Toshihiko and Koji, Morita and Matsunaga, Yasuaki and Mohd Mawardi, Saari and Sakai, Kenji and Tsukada, Keiji (2017) High-Resolution Laser-Assisted Magnetic Nanoparticle Imaging Using a High-TC SQUID Magnetometer. IEEE Transactions on Applied Superconductivity, 27 (4). pp. 1-4. ISSN 1051-8223 (Print); 1558-2515 (Online). (Published)
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Abstract
A new type of magnetic nanoparticle imaging (MPI) system has been proposed and developed. The spatial resolution of MPI systems is generally determined and limited by the size of the magnetic sensors used and the magnetic properties of the nanoparticles detected. Here, high-resolution imaging of magnetic particles was realized by combining the MPI system with a high-TC SQUID magnetometer and laser scanning system. The spatial resolution of this system was not determined by the properties of the magnetic nanoparticles but was determined by the laser spot size focused on samples. Thus, the higher spatial resolution imparted by conventional MPI systems could be expected. As a demonstration of the imaging system, two cylindrical containers filled with magnetic particles solutions were fabricated and measured. Although the containers were spaced only 2 mm apart, they could be clearly distinguished by the obtained signals. A knife-edge analysis was also applied to the obtained signals, and the spatial resolution of our system was estimated to be approximately 0.9 mm.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Biomagnetics; High-resolution imaging; Magnetic particles; Measurement by laser beam; SQUID |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Faculty/Division: | Faculty of Electrical & Electronic Engineering |
| Depositing User: | Mrs. Neng Sury Sulaiman |
| Date Deposited: | 17 Apr 2017 04:19 |
| Last Modified: | 18 May 2018 06:13 |
| URI: | http://umpir.ump.edu.my/id/eprint/14288 |
| Download Statistic: | View Download Statistics |
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