Relation between noise correlation and transmission coefficient of surface coils for magnetic resonance imaging

Author

Wang, J.

Author_Institution

Med. Eng. Group, Siemens AG, Erlangen, Germany

Volume

1

fYear

1995

fDate

20-25 Sep 1995

Firstpage

469

Abstract

To develop phased array surface coils, noise correlation between coil elements should be carefully considered. Here, an analytical expression has been derived which indicates the relation between noise correlation and transmission coefficient of any arbitrary two-port network. According to this result, it is clear that the transmission coefficient describes completely the noise correlation of the coils. To achieve minimum noise correlation for a coil system, one only needs to reduce the transmission coefficient s₂₁ between coil 1 and coil 2

Keywords

biomedical NMR; biomedical equipment; coils; noise; MRI; analytical expression; arbitrary two-port network; coil elements; magnetic resonance imaging; medical diagnostic imaging; noise correlation; phased array surface coils; surface coils; transmission coefficient; Circuit noise; Coils; Electrical resistance measurement; Equivalent circuits; Impedance; Magnetic noise; Noise measurement; Noise reduction; Phased arrays; Scattering parameters;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference

Conference_Location

Montreal, Que.

Print_ISBN

0-7803-2475-7

Type

conf

DOI

10.1109/IEMBS.1995.575204

Filename

575204