scholarly journals Motion-robust diffusion compartment imaging using simultaneous multi-slice acquisition

2018 ◽  
Vol 81 (5) ◽  
pp. 3314-3329 ◽  
Author(s):  
Bahram Marami ◽  
Benoit Scherrer ◽  
Shadab Khan ◽  
Onur Afacan ◽  
Sanjay P. Prabhu ◽  
...  
Keyword(s):  
Slice Acquisition

scholarly journals Now you see it, now you don't: optimal parameters for interslice stimulation in concurrent TMS-fMRI

2021 ◽  
Author(s):  
Catriona L Scrivener ◽  
Jade B Jackson ◽  
Marta Morgado Correia ◽  
Marius Mada ◽  
Alexandra Woolgar
Keyword(s):  
Single Channel ◽  
Signal To Noise Ratio ◽  
Brain Activity ◽  
Surface Coil ◽  
Acquisition Time ◽  
Surface Coils ◽  
Human Participant ◽  
Set Up ◽  
Promising Avenue ◽  
Slice Acquisition

The powerful combination of transcranial magnetic stimulation (TMS) concurrent with functional magnetic resonance imaging (fMRI) provides rare insights into the causal relationships between brain activity and behaviour. Despite a recent resurgence in popularity, TMS-fMRI remains technically challenging. Here we examined the feasibility of applying TMS during short gaps between fMRI slices to avoid incurring artefacts in the fMRI data. We quantified signal dropout and changes in temporal signal-to-noise ratio (tSNR) for TMS pulses presented at timepoints from 100ms before to 100ms after slice onset. Up to 3 pulses were delivered per volume using MagVenture's MR-compatible TMS coil. We used a spherical phantom, two 7-channel TMS-dedicated surface coils, and a multiband (MB) sequence (factor=2) with interslice gaps of 100ms and 40ms, on a Siemens 3T Prisma-fit scanner. For comparison we repeated a subset of parameters with a more standard single-channel TxRx (birdcage) coil, and with a human participant and surface coil set up. We found that, even at 100% stimulator output, pulses applied at least -40ms/+50ms from the onset of slice readout avoid incurring artifacts. This was the case for all three setups. Thus, an interslice protocol can be achieved with a frequency of up to ~10 Hz, using a standard EPI sequence (slice acquisition time: 62.5ms, interslice gap: 40ms). Faster stimulation frequencies would require shorter slice acquisition times, for example using in-plane acceleration. Interslice TMS-fMRI protocols provide a promising avenue for retaining flexible timing of stimulus delivery without incurring TMS artifacts.

Ultra-fast Brain MR Imaging Using Simultaneous Multi-slice Acquisition (SMA) Technique

2007 ◽  
Author(s):  
Edzer L. Wu ◽  
Li-Wei Kuo ◽  
Fu-Hsing Wu ◽  
Chien-Fang Hsu ◽  
Chang-Wei Hsieh ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Slice Acquisition

scholarly journals Retrospective detection of interleaved slice acquisition parameters from fMRI data

2014 ◽  
Author(s):  
David Parker ◽  
Georges Rotival ◽  
Andrew Laine ◽  
Qolamreza R. Razlighi
Keyword(s):  
Fmri Data ◽  
Slice Acquisition

Clinical application of Half Fourier Acquisition Single Shot Turbo Spin Echo (HASTE) imaging accelerated by simultaneous multi-slice acquisition

2018 ◽  
Vol 98 ◽  
pp. 200-206 ◽  
Author(s):  
Jenni Schulz ◽  
José P. Marques ◽  
Annemieke ter Telgte ◽  
Anouk van Dorst ◽  
Frank-Erik de Leeuw ◽  
...  
Keyword(s):  
Clinical Application ◽  
Spin Echo ◽  
Single Shot ◽  
Turbo Spin Echo ◽  
Turbo Spin ◽  
Slice Acquisition

INCREASING IMAGE SLICE ACQUISITION DECREASES ARTIFACTS GENERATED BY DIFFERENT ROOT-END FILLING MATERIALS

2019 ◽  
Vol 127 (1) ◽  
pp. 37-38
Author(s):  
J.C. KATS ◽  
M. NOUJEIM ◽  
H. DEMIRTURK KOCASARAC
Keyword(s):  
Filling Materials ◽  
Image Slice ◽  
Slice Acquisition

THE EFFECT OF ANGLE SLICE ACQUISITION ON COMPUTED TOMOGRAPHIC CERVICAL VERTEBRAL COLUMN MORPHOMETRY IN GREAT DANES

2015 ◽  
Vol 56 (5) ◽  
pp. 503-510 ◽  
Author(s):  
Amanda M. Jurkoshek ◽  
Ronaldo C. da Costa ◽  
Paula Martin-Vaquero
Keyword(s):  
Vertebral Column ◽  
Computed Tomographic ◽  
Slice Acquisition

scholarly journals 342. Development of double slice acquisition method with 0.2T MRI system

1992 ◽  
Vol 48 (8) ◽  
pp. 1425
Author(s):  
Shinji Kawasaki ◽  
Hiroshi Nishimura ◽  
Junichi Taguchi
Keyword(s):  
Acquisition Method ◽  
Slice Acquisition
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