Comparison of positioning methods of a ferromagnetic sphere for magnetic steering using 3 T MRI

Author

Han, Byung H. ; Kang, Lae H. ; Ha, Yong H. ; Cho, Min H. ; Lee, Soo Y.

Author_Institution

Department of Biomedical Engineering, Kyung Hee University, Yongin, Kyungki, Republic of Korea

fYear

2008

fDate

20-25 Aug. 2008

Firstpage

3231

Lastpage

3234

Abstract

Magnetic steering of an untethered ferromagnetic device in a living body has many advantages in the clinical fields. In this paper, the positioning and tracking methods of a ferromagnetic sphere have been compared with magnetic resonance phantom images obtained with three different imaging sequences, spin echo, gradient echo, and selected positive contrast sequences. The position of the ferromagnetic sphere has been calculated from the MRI images which have susceptibility artifacts caused by the magnetic sphere. We have compared the positioning errors among the magnetic sphere images.

Keywords

Image analysis; Imaging phantoms; Magnetic cores; Magnetic devices; Magnetic materials; Magnetic resonance imaging; Magnetic susceptibility; Minimally invasive surgery; Pattern analysis; Propulsion; Algorithms; Artifacts; Contrast Media; Equipment Design; Humans; Image Interpretation, Computer-Assisted; Imaging, Three-Dimensional; Magnetic Resonance Imaging; Magnetics; Models, Statistical; Phantoms, Imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE

Conference_Location

Vancouver, BC

ISSN

1557-170X

Print_ISBN

978-1-4244-1814-5

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2008.4649892

Filename

4649892