English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
 Local TagsRelease HistoryDetailsSummary
  Correction of Geometric Distortion in fMRI: A Single-Shot Technique Using Multi-Echo Echo-Planar Imaging (EPI)

Weiskopf, N., Klose, U., Erb, M., Birbaumer, N., & Mathiak, K. (2003). Correction of Geometric Distortion in fMRI: A Single-Shot Technique Using Multi-Echo Echo-Planar Imaging (EPI). Poster presented at 11th Scientific Meeting of the International Society of Magnetic Resonance in Medicine (ISMRM 2003), Toronto, ON, Canada.

Item is

 

show all hide all

Basic

show hide
Item Permalink: https://hdl.handle.net/21.11116/0000-0005-814C-4 Version Permalink: https://hdl.handle.net/21.11116/0000-0005-814D-3
Genre: Poster

Files

show Files

Locators

show
hide
Locator:
https://cds.ismrm.org/ismrm-2003/ismrm03.pdf (Abstract)
Description:
-
OA-Status:

Creators

show
hide
 Creators:
Weiskopf, N, Author
Klose, U, Author
Erb, M1, Author           
Birbaumer, N, Author
Mathiak, K, Author
Affiliations:
1External Organizations, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: Inhomogeneities of the static magnetic field cause geometric distortions in echo-planar imaging (EPI), which is commonly used for functional neuroimaging (fMRI). Usually, distortion correction is based on static field maps, which increases acquisition time and does not account for dynamic changes. We employed single-shot multi-echo EPI with alternating phase encoding (PE) direction. By comparing the echoes showing opposite distortions, displacement fields could be estimated. Application of the inverse displacement yielded an improved match of the echoes and allowed for weighted averages to increase contrast-to-noise ratio. This methodology is of interest for fMRI at higher fields and real-time applications.

Details

show
hide
Language(s):
 Dates: 2003-07
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: -
 Degree: -

Event

show
hide
Title: 11th Scientific Meeting of the International Society of Magnetic Resonance in Medicine (ISMRM 2003)
Place of Event: Toronto, ON, Canada
Start-/End Date: 2003-07-10 - 2003-07-16

Legal Case

show

Project information

show

Source 1

show
hide
Title: 11th Scientific Meeting of the International Society of Magnetic Resonance in Medicine (ISMRM 2003)
Source Genre: Proceedings
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: - Sequence Number: 1742 Start / End Page: 343 Identifier: ISSN: 1545-4428