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Evaluation of internal MRI coils using ultimate intrinsic SNR
Author(s) -
Çelik Haydar,
Eryaman Yiǧitcan,
Altıntaş Ayhan,
AbdelHafez I.A.,
Atalar Ergin
Publication year - 2004
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.20200
Subject(s) - electromagnetic coil , cylinder , coaxial , nuclear magnetic resonance , acoustics , signal to noise ratio (imaging) , antenna (radio) , noise (video) , signal (programming language) , physics , computer science , mathematics , optics , telecommunications , geometry , quantum mechanics , artificial intelligence , image (mathematics) , programming language
The upper bounds of the signal‐to‐noise ratio (also known as the “ultimate intrinsic signal‐to‐noise ratio” (UISNR)) for internal and external coils were calculated. In the calculation, the body was modeled as a dielectric cylinder with a small coaxial cylindrical cavity in which internal coils could be placed. The calculated UISNR values can be used as reference solutions to evaluate the performance of internal MRI coils. As examples, we evaluated the performance of a loopless antenna and an endourethral coil design by comparing their ISNR with the UISNR. Magn Reson Med 52:640–649, 2004. © 2004 Wiley‐Liss, Inc.