Imaging of Magnetic Nanoparticles Using AC Susceptibility Data
Magnetic nanoparticle tomography (MNT) can estimate the position of magnetic nanoparticles (MNPs) via inverse problem analysis. In MNT studies, a system matrix is experimentally acquired for inverse problem analysis. However, the long acquisition time causes large temperature fluctuations in the exc...
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| Veröffentlicht in: | IEEE transactions on magnetics 2023-11, Vol.59 (11), p.1-1 |
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| container_title | IEEE transactions on magnetics |
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| creator | Futagawa, Naoya Fujimoto, Misaki Higashino, Kohta Sasayama, Teruyoshi Yoshida, Takashi |
| description | Magnetic nanoparticle tomography (MNT) can estimate the position of magnetic nanoparticles (MNPs) via inverse problem analysis. In MNT studies, a system matrix is experimentally acquired for inverse problem analysis. However, the long acquisition time causes large temperature fluctuations in the excitation coil and electric circuit, resulting in noise in the system matrix. In this study, to remove this noise, the system matrix was calculated using AC susceptibility data experimentally obtained via magnetic particle spectroscopy. The inverse problem was solved using the calculated system matrix. As a result, spatial fluctuation was suppressed. Moreover, the position of MNPs was accurately estimated. These results confirmed that the proposed method is useful for estimating the position of MNPs in MNT systems. |
| doi_str_mv | 10.1109/TMAG.2023.3293542 |
| format | Article |
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In MNT studies, a system matrix is experimentally acquired for inverse problem analysis. However, the long acquisition time causes large temperature fluctuations in the excitation coil and electric circuit, resulting in noise in the system matrix. In this study, to remove this noise, the system matrix was calculated using AC susceptibility data experimentally obtained via magnetic particle spectroscopy. The inverse problem was solved using the calculated system matrix. As a result, spatial fluctuation was suppressed. Moreover, the position of MNPs was accurately estimated. 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In MNT studies, a system matrix is experimentally acquired for inverse problem analysis. However, the long acquisition time causes large temperature fluctuations in the excitation coil and electric circuit, resulting in noise in the system matrix. In this study, to remove this noise, the system matrix was calculated using AC susceptibility data experimentally obtained via magnetic particle spectroscopy. The inverse problem was solved using the calculated system matrix. As a result, spatial fluctuation was suppressed. Moreover, the position of MNPs was accurately estimated. These results confirmed that the proposed method is useful for estimating the position of MNPs in MNT systems.</description><subject>Circuits</subject><subject>Fluctuations</subject><subject>Harmonic analysis</subject><subject>Interpolation</subject><subject>Inverse problems</subject><subject>Magnetic field measurement</subject><subject>Magnetic fields</subject><subject>Magnetic flux</subject><subject>Magnetic nanoparticles</subject><subject>magnetic particle imaging</subject><subject>Magnetism</subject><subject>Mathematical analysis</subject><subject>medical diagnostic imaging</subject><subject>Nanoparticles</subject><subject>tomography</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpNkE1PwkAQhjdGExH9ASYemnhu3a_ux8WEoCIJ6EE4b6ZlSkqgrbvlwL93Gzh4mpnM-87HQ8gjoxlj1L6slpNZxikXmeBW5JJfkRGzkqWUKntNRpQyk1qp5C25C2EXS5kzOiKv8wNs62abtFWyhG2DfV0mX9C0HfiY7jEk6zD0J9Pk5xhK7Pq6qPd1f0reoId7clPBPuDDJY7J-uN9Nf1MF9-z-XSySEsuVZ8WaCpDtRUiXoOVFgU1eW61FiA3AFxJVVgGFnADShgKVa7BYCEoSmXQijF5Ps_tfPt7xNC7XXv0TVzpuDEsj48bFlXsrCp9G4LHynW-PoA_OUbdgMkNmNyAyV0wRc_T2VMj4j8905orJv4ARNJiOg</recordid><startdate>20231101</startdate><enddate>20231101</enddate><creator>Futagawa, Naoya</creator><creator>Fujimoto, Misaki</creator><creator>Higashino, Kohta</creator><creator>Sasayama, Teruyoshi</creator><creator>Yoshida, Takashi</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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In MNT studies, a system matrix is experimentally acquired for inverse problem analysis. However, the long acquisition time causes large temperature fluctuations in the excitation coil and electric circuit, resulting in noise in the system matrix. In this study, to remove this noise, the system matrix was calculated using AC susceptibility data experimentally obtained via magnetic particle spectroscopy. The inverse problem was solved using the calculated system matrix. As a result, spatial fluctuation was suppressed. Moreover, the position of MNPs was accurately estimated. 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| source | IEEE Electronic Library (IEL) |
| subjects | Circuits Fluctuations Harmonic analysis Interpolation Inverse problems Magnetic field measurement Magnetic fields Magnetic flux Magnetic nanoparticles magnetic particle imaging Magnetism Mathematical analysis medical diagnostic imaging Nanoparticles tomography |
| title | Imaging of Magnetic Nanoparticles Using AC Susceptibility Data |
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