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. 2013 Aug 17;3:196–201. doi: 10.1016/j.nicl.2013.08.003

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© 2013 The Authors

This work is licensed under a Creative Commons Attribution 3.0 Unported License.

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Fig. 2 — Hippocampal T2 hyperintensities on 7 Tesla MRI.

Examples of hippocampal T2 hyperintensities that were hypointense (A) or hyperintense (BC) on 7 Tesla FLAIR. The left figure on each row is sagittal, the other three are coronal. For clarity, the hippocampus is outlined. Most HT2Hs appeared round or ovoid, but the ones that were hyperintense on FLAIR sometimes had a different shape.

* indicates the choroid plexus, which is also hyperintense on FLAIR, but situated outside the hippocampus. Therefore it does not interfere with a reliable rating of focal HT2Hs within the hippocampus. X indicates the fluid — parenchyma border, which is also hyperintense on FLAIR. This hyperintense rim, characteristic for 7 Tesla FLAIR, is located along the outer surface of the brain and therefore does not interfere with a reliable rating of focal HT2Hs within the hippocampus.

a: anterior; p: posterior; m: medial; l: lateral.

The whole-brain 7 Tesla FLAIR scan of the participant whose hippocampus is depicted in panel C is available as a movie in the online supplementary material. Supplementary material Whole-brain FLAIR of a healthy 54-year old individual. This particular individual has a focal hippocampal FLAIR hyperintensity, possibly due to ischemia (best visible on sagittal view at 0:29min, and on coronal view at 0:34min). More details on 7T FLAIR contrast provided at [14]. This movie can be found at: http://www.youtube.com/watch?v=EaF_wbYlYc0.