使用极限固有信噪比评估内部磁共振成像线圈。

Evaluation of internal MRI coils using ultimate intrinsic SNR.

作者信息

Celik Haydar, Eryaman Yigitcan, Altintaş Ayhan, Abdel-Hafez I A, Atalar Ergin

机构信息

Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey.

出版信息

Magn Reson Med. 2004 Sep;52(3):640-9. doi: 10.1002/mrm.20200.

DOI:10.1002/mrm.20200

PMID:15334585

Abstract

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.

摘要

计算了内部和外部线圈的信噪比上限（也称为“最终固有信噪比”（UISNR））。在计算中，将人体建模为一个介电圆柱体，其内部有一个小的同轴圆柱形腔，内部线圈可放置在该腔内。计算得到的UISNR值可作为参考解，用于评估内部MRI线圈的性能。例如，我们通过将无环天线和尿道内线圈设计的ISNR与UISNR进行比较，评估了它们的性能。