Abstract #1252

Pushing fMRI spatial and temporal resolution further: high density receive arrays combined with shot-selective 2D CAIPIRINHA for 3D EPI scans at 7T

Arjan D. Hendriks¹, Federico D’Agata^1,2,3, Luisa Raimondo¹, Tim Schakel², Liesbeth Geerts⁴, Dennis W.J. Klomp¹, and Natalia Petridou¹

¹Department of Radiology, University Medical Center Utrecht, Utrecht, Netherlands, ²Department of Radiotherapy, University Medical Center Utrecht, Utrecht, Netherlands, ³Department of Neuroscience, University of Turin, Turin, Italy, ⁴Philips Healthcare, Best, Netherlands

There is an overall drive to high resolution brain MRI with a short scan time. In this study, it was investigated whether 3D EPI fMRI scans acquired with high density receive arrays, can still benefit from a CAIPI sampling pattern, in terms of (temporal) SNR. A 2D CAIPIRINHA acceleration scheme for multi-shot 3D EPI scans was implemented. When combining this implementation with high density receive coil arrays at 7T, it allowed substantial reduction of the scan time for sub-millimeter fMRI scans of the visual cortex.

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