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High resolution fMRI - Leuven

Sunaert, Stefan, M.D. Leuven, University of Leuven Belgium


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This ExamCard focuses on high spatial resolution mapping, which may be used for studies of retinotopic mapping of the visual cortex or similar studies. The ExamCard further includes basic scans like surveys and anatomical scans.



This functional scan produces a high-spatial resolution T2* weighted scan. A high SENSE factor of 2.5 is used to minimize the EPI readout length and thus limit the effect of blurring. The high matrix is combined with slices of 2mm and a gap of 0.2 mm. The TR is fixed to 2800 ms while 180 dynamic scans are performed.


Paradigms that may be used

- Retinotopic mapping: e.g. using visual stimuli presented at different visual field location (horizontal versus vertical meridians).

- Tonotopic mapping: variation of pure sinusoidal tones at different auditory frequencies should visualize specific subparts of primary/secondary auditory cortices.


Within the ExamCard, for all scans, text and images are provided. Within the fMRI protocol the fMRI paradigms and IViewBold analysis are further described.

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Jan 18, 2005

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