Der Fetus und der Lärm

Brezinka, C; Lechner, Th.; Stephan, Klaus

doi:10.1159/000272841

Cited by 10 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Gradient field switching produces acoustic noise, which may be detrimental to fetal auditory development. 52 Reports of evidence of hearing loss, shortened gestation and low birth weight in cases where the fetus was exposed to excessive noise in utero exist, 53 but this was caused by chronic maternal exposure to loud noise and not acute noise levels experienced during fetal MRI examinations. Despite the lack of evidence about the risk of acoustic damage to the fetus, some safety measures can be applied.…”

Section: Safety Concernsmentioning

confidence: 99%

Fetal MRI at 3T—ready for routine use?

Weisstanner¹,

Gruber²,

Brugger³

et al. 2017

BJR

View full text Add to dashboard Cite

Fetal MR now plays an important role in the clinical work-up of pregnant females. It is performed mainly at 1.5 T. However, the desire to obtain a more precise fetal depiction or the fact that some institutions have access only to a 3.0 T scanner has resulted in a growing interest in performing fetal MR at 3.0 T. The aim of this article was to provide a reference for the use of 3.0 T MRI as a prenatal diagnostic method.

show abstract

Section: Safety Concernsmentioning

confidence: 99%

Fetal MRI at 3T—ready for routine use?

Weisstanner¹,

Gruber²,

Brugger³

et al. 2017

BJR

View full text Add to dashboard Cite

show abstract

“…(182,232,246) Some studies report evidence of high frequency hearing loss, shortened gestation and low birth weight in cases where the fetus was exposed to excessive noise in utero ; however the noise in these cases was a result of chronic maternal exposure to loud noise, and did not reflect the acute noise levels experienced during fetal MRI examinations. (285,286)…”

Section: Fetal Imagingmentioning

confidence: 99%

MRI evaluation and safety in the developing brain

Tocchio

Kline‐Fath

Kanal

et al. 2015

Seminars in Perinatology

113

View full text Add to dashboard Cite

Magnetic resonance imaging (MRI) evaluation of the developing brain has dramatically increased over the last decade. Faster acquisitions and the development of advanced MRI sequences such as magnetic resonance spectroscopy (MRS), diffusion tensor imaging (DTI), perfusion imaging, functional MR imaging (fMRI), and susceptibility weighted imaging (SWI), as well as the use of higher magnetic field strengths has made MRI an invaluable tool for detailed evaluation of the developing brain. This article will provide an overview of the use and challenges associated with 1.5T and 3T static magnetic fields for evaluation of the developing brain. This review will also summarize the advantages, clinical challenges and safety concerns specifically related to MRI in the fetus and newborn, including the implications of increased magnetic field strength, logistics related to transporting and monitoring of neonates during scanning, sedation considerations and a discussion of current technologies such as MRI-conditional neonatal incubators and dedicated small-foot print neonatal intensive care unit (NICU) scanners.

show abstract

Quiet echo planar imaging for functional and diffusion MRI

Hutter

Price

Cordero‐Grande

et al. 2017

Magnetic Resonance in Med

View full text Add to dashboard Cite

PurposeTo develop a purpose‐built quiet echo planar imaging capability for fetal functional and diffusion scans, for which acoustic considerations often compromise efficiency and resolution as well as angular/temporal coverage.MethodsThe gradient waveforms in multiband‐accelerated single‐shot echo planar imaging sequences have been redesigned to minimize spectral content. This includes a sinusoidal read‐out with a single fundamental frequency, a constant phase encoding gradient, overlapping smoothed CAIPIRINHA blips, and a novel strategy to merge the crushers in diffusion MRI. These changes are then tuned in conjunction with the gradient system frequency response function.ResultsMaintained image quality, SNR, and quantitative diffusion values while reducing acoustic noise up to 12 dB (A) is illustrated in two adult experiments. Fetal experiments in 10 subjects covering a range of parameters depict the adaptability and increased efficiency of quiet echo planar imaging.ConclusionPurpose‐built for highly efficient multiband fetal echo planar imaging studies, the presented framework reduces acoustic noise for all echo planar imaging‐based sequences. Full optimization by tuning to the gradient frequency response functions allows for a maximally time‐efficient scan within safe limits. This allows ambitious in‐utero studies such as functional brain imaging with high spatial/temporal resolution and diffusion scans with high angular/spatial resolution to be run in a highly efficient manner at acceptable sound levels. Magn Reson Med 79:1447–1459, 2018. © 2017 The Authors Magnetic Resonance in Medicine published by Wiley Periodicals, Inc. on behalf of International Society for Magnetic Resonance in Medicine. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

show abstract

Der Fetus und der Lärm

Cited by 10 publications

References 16 publications

Fetal MRI at 3T—ready for routine use?

Fetal MRI at 3T—ready for routine use?

MRI evaluation and safety in the developing brain

Quiet echo planar imaging for functional and diffusion MRI

Contact Info

Product

Resources

About