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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...
Autores principales: | , , , , , |
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Formato: | Texto |
Lenguaje: | English |
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Medknow Publications
2010
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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. |
format | Text |
id | pubmed-3056618 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2010 |
publisher | Medknow Publications |
record_format | MEDLINE/PubMed |
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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