Neuroimaging Facility Updates and Advances
Stability scan update: Mid-June
Summary I've updated my stability scan summary code to bring all the measures into a single plot. Hopefully it's not too busy. Details on stability scans below. My last post explained the bimodal distribution of the "Mean ghost" measure for the 64-channel coil....
Ghosting in multi-band EPI scans
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, particularly for...
MRI Stability Summary April 2025
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
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...
Evaluating motion correction for structural brain scans
Siemens provided the MindCORE Neuroimaging Facility witha demo of their built-in motion correction software for structural scans (BioMatrix Motion Sensor - SAMER). Below are examples of T1 MPRAGE scans collected from a participant performing various commonly observed...