Good to Know - Parallel Imaging SPEEDER and Exsper

Parallel Imaging SPEEDER and Exsper
Valentin H. Prevost, PhD
WHAT?
MRI images are created by gathering data from what is known in physics as the k-space. Parallel imaging (PI) under-samples data from the k-space by combining signal coming from multiple coils in parallel.
WHY?
By under-sampling data, we can speed-up scan time as less data is required in the acquisition phase.
WHEN?
Parallel Imaging can be used in several ways:
To go faster: higher patient throughput, shorter patient breath-hold, functional MRI, MR Angiography, reduce motion artifacts.
To reduce susceptibility artifacts : single shot EPI with Exsper(diffusion, DTI).
We try to make it easy to understand with videos and links to useful information, and PDFs are made available to print out if you would like to keep the information handy.
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SPEEDER=SENSE, EXSPER=GRAPPA