Evaluation of coils for imaging histological slides: signal-to-noise ratio and filling factor.

Abstract:

PURPOSE:To investigate the relative gain in sensitivity of five histology coils designed in-house to accommodate tissue sections of various sizes and compare with commercial mouse head coils. METHODS:The coil set was tailored to house tissue sections ranging from 5 to1000 µm encased in either glass slides or coverslips. RESULTS:Our simulations and experimental measurements demonstrated that although the sensitivity of this flat structure consistently underperforms relative to a birdcage head coil based on the gain expected from their respective filling factor ratios, our results demonstrate that it can still provide a remarkable gain in sensitivity. Our study also describes preparation protocols for freshly excised sections, as well as premounted tissue slides of both mouse and human specimens. Examples of the exceptional level of tissue detail and the near-perfect magnetic resonance imaging to light microscopic image coregistration are provided. CONCLUSION:The increase in filling factor achieved by the histology radiofrequency (RF) probe overcomes the losses associated with electric leaks inherent to this structure, leading to a 6.7-fold improvement in performance for the smallest coil implemented. Alternatively, the largest histology coil design exhibited equal sensitivity to the mouse head coil while nearly doubling the RF planar area coverage.

journal_name

Magn Reson Med

authors

Hoang DM,Voura EB,Zhang C,Fakri-Bouchet L,Wadghiri YZ

doi

10.1002/mrm.24841

subject

Has Abstract

pub_date

2014-05-01 00:00:00

pages

1932-43

issue

5

eissn

0740-3194

issn

1522-2594

journal_volume

71

pub_type

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