Three-Dimensional Magnetic Particle Imaging Utilizing Multiple Pickup Coils and Field-Free Line

M. Muta, Y. Tsujita, M. Matsuo, T. Sasayama, T. Yoshida, K. Enpuku

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

2 被引用数 (Scopus)

抄録

We performed three-dimensional magnetic particle imaging using third-harmonic signal detection. The measurement system consists of three coil types, i.e., an ac excitation coil, a dc gradient coil, and five pickup coils cooled to 77 K. In the experiment, two magnetic nanoparticle samples containing 10 μg (Fe) of magnetic nanoparticles were arranged three-dimensionally with a spacing of 16 mm. An ac excitation field with a strength of 1.6 mT at 3 kHz and a dc gradient field with a field gradient of 0.2 T/m were used. A third-harmonic signal generated from the magnetic nanoparticle samples was detected using the five pickup coils. The noise of the detection system was as low as SB1/2 = 7 fT/Hz1/2 at a signal frequency of 9 kHz. A magnetic field map generated from the two magnetic nanoparticle samples was obtained by scanning the samples two-dimensionally. Field maps obtained with the five pickup coils were analyzed to reconstruct a three-dimensional distribution image of the magnetic nanoparticle sample. A mathematical technique called the nonnegative least squares method was used for this purpose. We successfully demonstrated three-dimensional magnetic particle imaging. Namely, we reconstructed the three-dimensional positions of the two magnetic nanoparticle samples with good accuracy. Quantities of the two magnetic nanoparticle samples were also estimated reasonably well. These results indicate the feasibility of the present system for three-dimensional magnetic particle imaging.

本文言語英語
ホスト出版物のタイトル2017 16th International Superconductive Electronics Conference, ISEC 2017
出版社Institute of Electrical and Electronics Engineers Inc.
ページ1-3
ページ数3
ISBN(電子版)9781509058686
DOI
出版ステータス出版済み - 3 9 2018
イベント16th International Superconductive Electronics Conference, ISEC 2017 - Napoli, イタリア
継続期間: 6 12 20176 16 2017

出版物シリーズ

名前2017 16th International Superconductive Electronics Conference, ISEC 2017
2018-January

その他

その他16th International Superconductive Electronics Conference, ISEC 2017
国/地域イタリア
CityNapoli
Period6/12/176/16/17

All Science Journal Classification (ASJC) codes

  • 電子工学および電気工学
  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学

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