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MRI findings in Hirayama disease

The objective of the study was to study the magnetic resonance imaging (MRI) features of Hirayama disease on a 3 Tesla MRI scanner. Nine patients with clinically suspected Hirayama disease were evaluated with neutral position, flexion, contrast-enhanced MRI and fast imaging employing steady-state ac...

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Autores principales: Raval, Monali, Kumari, Rima, Dung, Aldrin Anthony Dung, Guglani, Bhuvnesh, Gupta, Nitij, Gupta, Rohit
Formato: Texto
Lenguaje:English
Publicado: Medknow Publications 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3056618/
https://www.ncbi.nlm.nih.gov/pubmed/21423896
http://dx.doi.org/10.4103/0971-3026.73528
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author Raval, Monali
Kumari, Rima
Dung, Aldrin Anthony Dung
Guglani, Bhuvnesh
Gupta, Nitij
Gupta, Rohit
author_facet Raval, Monali
Kumari, Rima
Dung, Aldrin Anthony Dung
Guglani, Bhuvnesh
Gupta, Nitij
Gupta, Rohit
author_sort Raval, Monali
collection PubMed
description The objective of the study was to study the magnetic resonance imaging (MRI) features of Hirayama disease on a 3 Tesla MRI scanner. Nine patients with clinically suspected Hirayama disease were evaluated with neutral position, flexion, contrast-enhanced MRI and fast imaging employing steady-state acquisition (FIESTA) sequences. The spectrum of MRI features was evaluated and correlated with the clinical and electromyography findings. MRI findings of localized lower cervical cord atrophy (C5-C7), abnormal curvature, asymmetric cord flattening, loss of attachment of the dorsal dural sac and subjacent laminae in the neutral position, anterior displacement of the dorsal dura on flexion and a prominent epidural space were revealed in all patients on conventional MRI as well as with the dynamic 3D-FIESTA sequence. Intramedullary hyperintensity was seen in four patients on conventional MRI and on the 3D-FIESTA sequence. Flow voids were seen in four patients on conventional MRI sequences and in all patients with the 3D-FIESTA sequence. Contrast enhancement of the epidural component was noted in all the five patients with thoracic extensions. The time taken for conventional and contrast-enhanced MRI was about 30–40 min, while that for the 3D-FIESTA sequence was 6 min. Neutral and flexion position MRI and the 3D-FIESTA sequence compliment each other in displaying the spectrum of findings in Hirayama disease. A flexion study should form an essential part of the screening protocol in patients with suspected Hirayama disease. Newer sequences such as the 3D-FIESTA may help in reducing imaging time and obviating the need for contrast.
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spelling pubmed-30566182011-03-18 MRI findings in Hirayama disease Raval, Monali Kumari, Rima Dung, Aldrin Anthony Dung Guglani, Bhuvnesh Gupta, Nitij Gupta, Rohit Indian J Radiol Imaging Neuroradiology The objective of the study was to study the magnetic resonance imaging (MRI) features of Hirayama disease on a 3 Tesla MRI scanner. Nine patients with clinically suspected Hirayama disease were evaluated with neutral position, flexion, contrast-enhanced MRI and fast imaging employing steady-state acquisition (FIESTA) sequences. The spectrum of MRI features was evaluated and correlated with the clinical and electromyography findings. MRI findings of localized lower cervical cord atrophy (C5-C7), abnormal curvature, asymmetric cord flattening, loss of attachment of the dorsal dural sac and subjacent laminae in the neutral position, anterior displacement of the dorsal dura on flexion and a prominent epidural space were revealed in all patients on conventional MRI as well as with the dynamic 3D-FIESTA sequence. Intramedullary hyperintensity was seen in four patients on conventional MRI and on the 3D-FIESTA sequence. Flow voids were seen in four patients on conventional MRI sequences and in all patients with the 3D-FIESTA sequence. Contrast enhancement of the epidural component was noted in all the five patients with thoracic extensions. The time taken for conventional and contrast-enhanced MRI was about 30–40 min, while that for the 3D-FIESTA sequence was 6 min. Neutral and flexion position MRI and the 3D-FIESTA sequence compliment each other in displaying the spectrum of findings in Hirayama disease. A flexion study should form an essential part of the screening protocol in patients with suspected Hirayama disease. Newer sequences such as the 3D-FIESTA may help in reducing imaging time and obviating the need for contrast. Medknow Publications 2010-11 /pmc/articles/PMC3056618/ /pubmed/21423896 http://dx.doi.org/10.4103/0971-3026.73528 Text en © Indian Journal of Radiology and Imaging http://creativecommons.org/licenses/by/2.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Neuroradiology
Raval, Monali
Kumari, Rima
Dung, Aldrin Anthony Dung
Guglani, Bhuvnesh
Gupta, Nitij
Gupta, Rohit
MRI findings in Hirayama disease
title MRI findings in Hirayama disease
title_full MRI findings in Hirayama disease
title_fullStr MRI findings in Hirayama disease
title_full_unstemmed MRI findings in Hirayama disease
title_short MRI findings in Hirayama disease
title_sort mri findings in hirayama disease
topic Neuroradiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3056618/
https://www.ncbi.nlm.nih.gov/pubmed/21423896
http://dx.doi.org/10.4103/0971-3026.73528
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