Cargando…

Outpacing movement — ultrafast volume coverage in neuropediatric magnetic resonance imaging

BACKGROUND: Conventional MRI sequences are often affected in neuropediatric imaging by unavoidable movements. Therefore, children younger than 6 years usually have to be examined under sedation/anesthesia. A new real-time MRI technique with automatic slice advancement allows for motion-robust T2-wei...

Descripción completa

Detalles Bibliográficos
Autores principales: Gräfe, Daniel, Roth, Christian, Weisser, Margit, Krause, Matthias, Frahm, Jens, Voit, Dirk, Hirsch, Franz Wolfgang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7604272/
https://www.ncbi.nlm.nih.gov/pubmed/32949250
http://dx.doi.org/10.1007/s00247-020-04771-5
_version_ 1783604109294698496
author Gräfe, Daniel
Roth, Christian
Weisser, Margit
Krause, Matthias
Frahm, Jens
Voit, Dirk
Hirsch, Franz Wolfgang
author_facet Gräfe, Daniel
Roth, Christian
Weisser, Margit
Krause, Matthias
Frahm, Jens
Voit, Dirk
Hirsch, Franz Wolfgang
author_sort Gräfe, Daniel
collection PubMed
description BACKGROUND: Conventional MRI sequences are often affected in neuropediatric imaging by unavoidable movements. Therefore, children younger than 6 years usually have to be examined under sedation/anesthesia. A new real-time MRI technique with automatic slice advancement allows for motion-robust T2-weighted volume coverage of the whole brain within a few seconds in adults. OBJECTIVE: To evaluate to which extent the new volume coverage method can be used to visualize cerebrospinal fluid and reduce the need for anesthesia in children. MATERIALS AND METHODS: We assessed 30 children ages 6 years and younger with suspected or proven hydrocephalus, hygroma or macrocephalus using volume coverage sequences with 20 slices per second in three planes. If necessary, a parent was placed in the bore together with the child for calming and gentle immobilization. We compared visualization of cerebrospinal fluid spaces and course of the shunt catheter in volume coverage sequences vs. fast spin-echo sequences. RESULTS: The clinical issue could be sufficiently assessed in all children with use of volume coverage sequences, whereas conventional fast spin-echo sequences performed moderately to poorly. Visualization of the tip of a shunt failed in 16% of volume coverage scans and 27% of turbo spin-echo scans. A subsequent examination under anesthesia was never necessary. None of the examinations had to be stopped prematurely. CONCLUSION: The motion-robust volume coverage sequences with T2-type contrast can be used to avoid sedation of children in the evaluation of cerebrospinal fluid spaces, even in the presence of vigorous motion. For other indications and contrasts, the technique must still be evaluated. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s00247-020-04771-5) contains supplementary material, which is available to authorized users.
format Online
Article
Text
id pubmed-7604272
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher Springer Berlin Heidelberg
record_format MEDLINE/PubMed
spelling pubmed-76042722020-11-10 Outpacing movement — ultrafast volume coverage in neuropediatric magnetic resonance imaging Gräfe, Daniel Roth, Christian Weisser, Margit Krause, Matthias Frahm, Jens Voit, Dirk Hirsch, Franz Wolfgang Pediatr Radiol Original Article BACKGROUND: Conventional MRI sequences are often affected in neuropediatric imaging by unavoidable movements. Therefore, children younger than 6 years usually have to be examined under sedation/anesthesia. A new real-time MRI technique with automatic slice advancement allows for motion-robust T2-weighted volume coverage of the whole brain within a few seconds in adults. OBJECTIVE: To evaluate to which extent the new volume coverage method can be used to visualize cerebrospinal fluid and reduce the need for anesthesia in children. MATERIALS AND METHODS: We assessed 30 children ages 6 years and younger with suspected or proven hydrocephalus, hygroma or macrocephalus using volume coverage sequences with 20 slices per second in three planes. If necessary, a parent was placed in the bore together with the child for calming and gentle immobilization. We compared visualization of cerebrospinal fluid spaces and course of the shunt catheter in volume coverage sequences vs. fast spin-echo sequences. RESULTS: The clinical issue could be sufficiently assessed in all children with use of volume coverage sequences, whereas conventional fast spin-echo sequences performed moderately to poorly. Visualization of the tip of a shunt failed in 16% of volume coverage scans and 27% of turbo spin-echo scans. A subsequent examination under anesthesia was never necessary. None of the examinations had to be stopped prematurely. CONCLUSION: The motion-robust volume coverage sequences with T2-type contrast can be used to avoid sedation of children in the evaluation of cerebrospinal fluid spaces, even in the presence of vigorous motion. For other indications and contrasts, the technique must still be evaluated. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s00247-020-04771-5) contains supplementary material, which is available to authorized users. Springer Berlin Heidelberg 2020-09-19 2020 /pmc/articles/PMC7604272/ /pubmed/32949250 http://dx.doi.org/10.1007/s00247-020-04771-5 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International license, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Original Article
Gräfe, Daniel
Roth, Christian
Weisser, Margit
Krause, Matthias
Frahm, Jens
Voit, Dirk
Hirsch, Franz Wolfgang
Outpacing movement — ultrafast volume coverage in neuropediatric magnetic resonance imaging
title Outpacing movement — ultrafast volume coverage in neuropediatric magnetic resonance imaging
title_full Outpacing movement — ultrafast volume coverage in neuropediatric magnetic resonance imaging
title_fullStr Outpacing movement — ultrafast volume coverage in neuropediatric magnetic resonance imaging
title_full_unstemmed Outpacing movement — ultrafast volume coverage in neuropediatric magnetic resonance imaging
title_short Outpacing movement — ultrafast volume coverage in neuropediatric magnetic resonance imaging
title_sort outpacing movement — ultrafast volume coverage in neuropediatric magnetic resonance imaging
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7604272/
https://www.ncbi.nlm.nih.gov/pubmed/32949250
http://dx.doi.org/10.1007/s00247-020-04771-5
work_keys_str_mv AT grafedaniel outpacingmovementultrafastvolumecoverageinneuropediatricmagneticresonanceimaging
AT rothchristian outpacingmovementultrafastvolumecoverageinneuropediatricmagneticresonanceimaging
AT weissermargit outpacingmovementultrafastvolumecoverageinneuropediatricmagneticresonanceimaging
AT krausematthias outpacingmovementultrafastvolumecoverageinneuropediatricmagneticresonanceimaging
AT frahmjens outpacingmovementultrafastvolumecoverageinneuropediatricmagneticresonanceimaging
AT voitdirk outpacingmovementultrafastvolumecoverageinneuropediatricmagneticresonanceimaging
AT hirschfranzwolfgang outpacingmovementultrafastvolumecoverageinneuropediatricmagneticresonanceimaging