Dubious -

On further review, I'm not sure some of the press releases about the Tesla 9.4's ("resolving individual cells") are worth their hype. In fact, I'm relieved that I didn't site them as gospel.

Turns out the the voxol (the resolvable element of the 2-D slice being imaged) for a 9.4 Telsa is 0.2mm x 0.3mm x 0.2mm or (0.2 cubic mm) ["A Computational Atlas of the Human Hippocampus from Postmortem 9.4T MRI," PA Yushkevich et al at p. 7] http://picsl.upenn.edu/caph08/papers/slides15.pdf while that of the 1.5 Tesla is approximately 3 cubic mm ["The Basics of MRI," JP Hornak, Chapter 1 (INTRODUCTION) - Tomographic Imaging] http://www.cis.rit.edu/htbooks/mri/inside.htm, differing only by a power of 15 of so.

And a power of 15 is of course nothing to sneeze at. In fact, if you open "A Computational Atlas of the Human Hippocampus from Postmortem 9.4T MRI," which came out of Penn's Department of Radiology last year - basically slides for a PowerPoint presentation - you can see comparisons between images taken with the Tesla T1 and two versions of the T2 on page 3, with another from the 9.4 on page 7. And while the 9.4 is clearly a great improvement, cellular it isn't. That said, just as there were significant differences between two versions of the T1, there may be with the 9.4 as well. But all of this is well above my (former) pay-grade.

Mike