Near field computation for medical diagnostics

Author

Naveendra, T.S. ; Hoole, P.R.P.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore

Volume

35

Issue

3

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

1765

Lastpage

1768

Abstract

In contemporary imaging methods the magnitude of the electromagnetic signals is assumed to be independent of the distance between the radiating region and the receiver. The veracity of this assumption is evaluated for a typical magnetic resonance imaging (MRI) scenario. Further, a more exact model of the MR signal based on magnetic dipoles is proposed and used for image reconstruction. The received signals are modeled using the complete electromagnetic field representation and the reconstructed images are compared with that using the models reported in literature. The difference that the complete form of the electromagnetic fields makes to the final reconstructed image is seen to be significant

Keywords

biomedical MRI; electromagnetic fields; image reconstruction; magnetic moments; medical image processing; modelling; MRI scenario; electromagnetic field representation; electromagnetic signals; image reconstruction; imaging methods; magnetic dipoles; magnetic resonance imaging; magnitude/phase modifying factor; medical diagnostics; near field computation; reconstructed images; Biomedical imaging; Electromagnetic fields; Electromagnetic modeling; Hydrogen; Image reconstruction; Magnetic fields; Magnetic resonance imaging; Medical diagnosis; Positron emission tomography; Resonant frequency;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.767372

Filename

767372