Ghosting in multi-band EPI scans

Ghosting in multi-band EPI scans

by | Apr 22, 2025 | Uncategorized

In a previous post I described our procedure for stability scanning on our Siemens Cima.X scanner. Sharp-eyed readers may have noticed an oddity in our stability scanning summary, where the “Mean Ghost” measure seems to have a bimodal distribution,...

MRI Stability Summary April 2025

by | Apr 8, 2025 | Neuroimaging Facility

Summary Weekly MRI quality assurance (QA) scans are performed with the 64-, 32-, and 20-channel head coils. Scan sequences are based on recommendations of Pyles et al. (see https://sites.google.com/view/mri-facility-qa) and stability measures are calculated using the...

MRI Stability Scanning

by | Apr 8, 2025 | Neuroimaging Facility

We have implemented a weekly quality assurance (QA) protocol in which we assess the stability of the fMRI signal from the Cima.X scanner using the 64-, 32-, and 20-channel head coils and both standard Siemens and CMRR multi-band EPI pulse sequences. The scan protocol...