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Evaluation of Internal MRI Coils Using Ultimate Intrinsic SNR

Summary: Evaluation of Internal MRI Coils Using Ultimate
Intrinsic SNR
Haydar C¸elik,1
Yigitcan Eryaman,1
Ayhan Altintas¸,1
I.A. Abdel-Hafez,1
Ergin Atalar1,2,3,4*
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 cylin-
drical cavity in which internal coils could be placed. The calcu-
lated UISNR values can be used as reference solutions to eval-
uate the performance of internal MRI coils. As examples, we
evaluated the performance of a loopless antenna and an en-
dourethral coil design by comparing their ISNR with the
UISNR. Magn Reson Med 52:640­649, 2004. © 2004 Wiley-
Liss, Inc.
Key words: internal coils; external coils; endoluminal coils;


Source: Atalar, Ergin - Department of Electrical and Electronics Engineering, Bilkent University


Collections: Engineering; Biology and Medicine