The following is a personal selection of my must-see layer-fMRI abstracts presented at ISMRM and OHBM in 2018. If I missed something, please let me know.
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Author: renzohuber
Renzos Power-Point Slide Repository
This post contains a collection of recently presented powerpoint slides.
Documentation of Installing an IDEA VirtualBox for VE11 from OVA
This post documents the installation of an IDEA VE11 virtual box on a mac as done on May 14th 2018
Big thanks to Andy for figuring out how this works
Prerequisites
- Here I start with a already built images of IDEA on windows vista and mars on Ubuntu. the images from FMRIF can be taken from erbium.nimh.nih.gov:/fmrif/projects/SiemensIdea/virtual_machines/OVF/): IDEA_ve11c-mars.ova and IDEA_ve11c+vd13d+vd13a.ova
- Virtual box software can be downloaded here.
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EPI phase correction algorithms
At high resolution EPI, the gradients are pushed to their limits and the ramp sampling ratio is particularly large. This means that the ghosting is increased and the Nyquist ghost correction is getting more important. In this post, I describe how to change the Nyquist ghost correction algorithm.
SS-SI VASO pitfalls in visual cortex
With respect to high-resolution VASO application, visual cortex is very unique. Because of its high demand, the most important pitfalls of SS-SI VASO in visual cortex are discussed below.
Unwanted spatial blurring during resampling
In layer-fMRI, we spend so much time and effort to achieve high spatial resolutions and small voxel sizes during the acquisition. However, during the evaluation pipeline much of this spatial resolution can be lost during multiple resampling steps.
In this post, I want to discuss sources of signal blurring during spatial resampling steps and potential strategies to account for them.
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Partial-Fourier imaging at High Resolutions
This blog post discusses the resolution loss when applying partial-Fourier imaging in GE-EPI in the presence of strong T2*-decay.
I found that that when I was aiming for high-resolutions, it is beneficial to refrain from the application of partial Fourier (PF) imaging as much as possible. For the long readout durations at high-resolutions and the fast T2/T2*-decay at high field strengths results in even stronger blurring of partial-Fourier.
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