Cone-shaped micro coil for magnetic resonance imaging

Author

Inamura, Tetsunari ; Dohi, Tadashi

Author_Institution

Dept. of Precision Mech., Chuo Univ., Tokyo, Japan

fYear

2013

fDate

20-24 Jan. 2013

Firstpage

335

Lastpage

338

Abstract

This paper reports on a cone-shaped micro coil for measuring an NMR (Nuclear Magnetic Resonance) signal of an MRI (Magnetic Resonance Imaging). A three dimensional cone-shaped micro coil was fabricated by pulling up an outer frame of a spiral patterned micro coil. Since there are supporting parts between the wiring, the cone-shaped micro coil has uniform pitch. By using this process, we fabricated the cone-shaped micro coil of 30 mm in diameter and 8 mm in height. The resistance and Q-factor of the coil were 2.14 Ω and 32.3 at 8.5 MHz. As a demonstration of MRI by the cone-shaped micro coil, we acquired MR images of a quail egg and an okra.

Keywords

Q-factor; coils; image resolution; magnetic resonance imaging; microfabrication; nuclear magnetic resonance; 3D cone-shaped microcoil; MRI demonstration; NMR signal measurement; Q-factor; frequency 8.5 MHz; magnetic resonance imaging; nuclear magnetic resonance; okra; quail egg; resistance 2.14 ohm; spiral patterned microcoil; three-dimensional cone-shaped microcoil; Coils; Image resolution; Magnetic resonance imaging; Parasitic capacitance; Resistance; Spirals; Wiring;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro Electro Mechanical Systems (MEMS), 2013 IEEE 26th International Conference on

Conference_Location

Taipei

ISSN

1084-6999

Print_ISBN

978-1-4673-5654-1

Type

conf

DOI

10.1109/MEMSYS.2013.6474246

Filename

6474246