Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye
Abstract Background Scanning techniques such as magnetic resonance imaging (MRI) and computed tomography (CT) are useful tools in veterinary and human medicine. Here we demonstrate the usefulness of these techniques in the study of the anatomy of wild marine mammals as part of a necropsy. MRI and CT...
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ftdoajarticles:oai:doaj.org/article:f79eacb9c0684e2895c40e7a82ead777 2023-05-15T17:59:26+02:00 Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye Aage Kristian Olsen Alstrup Ole Lajord Munk Trine Hammer Jensen Lasse Fast Jensen Abdi Hedayat Brian Hansen 2017-06-01T00:00:00Z https://doi.org/10.1186/s13028-017-0307-y https://doaj.org/article/f79eacb9c0684e2895c40e7a82ead777 EN eng BMC http://link.springer.com/article/10.1186/s13028-017-0307-y https://doaj.org/toc/1751-0147 doi:10.1186/s13028-017-0307-y 1751-0147 https://doaj.org/article/f79eacb9c0684e2895c40e7a82ead777 Acta Veterinaria Scandinavica, Vol 59, Iss 1, Pp 1-8 (2017) Imaging techniques Computer tomography Magnetic resonance Sperm whales Eyes Teeth Veterinary medicine SF600-1100 article 2017 ftdoajarticles https://doi.org/10.1186/s13028-017-0307-y 2022-12-30T22:12:45Z Abstract Background Scanning techniques such as magnetic resonance imaging (MRI) and computed tomography (CT) are useful tools in veterinary and human medicine. Here we demonstrate the usefulness of these techniques in the study of the anatomy of wild marine mammals as part of a necropsy. MRI and CT scans of sperm whale teeth (n = 4) were performed. The methods were compared and further compared to current standard methods for evaluation of tooth layering. For MRI a zero echo time sequence was used, as previously done for imaging of intact human teeth. For CT two different clinical scanners were used. Results The three scanners did not provide sufficient information to allow age estimation, but both MRI and CT provided anatomical information about the tooth cortex and medulla without the need for sectioning the teeth. MRI scanning was also employed for visualizing the vascularization of an intact eye from one of the stranded sperm whale. Conclusions Clearly, MRI was useful for investigation of the retinal vasculation, but optimum results would require well-preserved tissue. It was not possible to estimate age based on CT scans of tooth growth lines. Further research is needed to clarify the usability of MRI and CT as tools for marine mammal research when samples need to remain intact or when a spatial (three dimensional) arrangement of features needs to be determined. Article in Journal/Newspaper Physeter macrocephalus Sperm whale Directory of Open Access Journals: DOAJ Articles Acta Veterinaria Scandinavica 59 1 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Imaging techniques Computer tomography Magnetic resonance Sperm whales Eyes Teeth Veterinary medicine SF600-1100 |
spellingShingle |
Imaging techniques Computer tomography Magnetic resonance Sperm whales Eyes Teeth Veterinary medicine SF600-1100 Aage Kristian Olsen Alstrup Ole Lajord Munk Trine Hammer Jensen Lasse Fast Jensen Abdi Hedayat Brian Hansen Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye |
topic_facet |
Imaging techniques Computer tomography Magnetic resonance Sperm whales Eyes Teeth Veterinary medicine SF600-1100 |
description |
Abstract Background Scanning techniques such as magnetic resonance imaging (MRI) and computed tomography (CT) are useful tools in veterinary and human medicine. Here we demonstrate the usefulness of these techniques in the study of the anatomy of wild marine mammals as part of a necropsy. MRI and CT scans of sperm whale teeth (n = 4) were performed. The methods were compared and further compared to current standard methods for evaluation of tooth layering. For MRI a zero echo time sequence was used, as previously done for imaging of intact human teeth. For CT two different clinical scanners were used. Results The three scanners did not provide sufficient information to allow age estimation, but both MRI and CT provided anatomical information about the tooth cortex and medulla without the need for sectioning the teeth. MRI scanning was also employed for visualizing the vascularization of an intact eye from one of the stranded sperm whale. Conclusions Clearly, MRI was useful for investigation of the retinal vasculation, but optimum results would require well-preserved tissue. It was not possible to estimate age based on CT scans of tooth growth lines. Further research is needed to clarify the usability of MRI and CT as tools for marine mammal research when samples need to remain intact or when a spatial (three dimensional) arrangement of features needs to be determined. |
format |
Article in Journal/Newspaper |
author |
Aage Kristian Olsen Alstrup Ole Lajord Munk Trine Hammer Jensen Lasse Fast Jensen Abdi Hedayat Brian Hansen |
author_facet |
Aage Kristian Olsen Alstrup Ole Lajord Munk Trine Hammer Jensen Lasse Fast Jensen Abdi Hedayat Brian Hansen |
author_sort |
Aage Kristian Olsen Alstrup |
title |
Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye |
title_short |
Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye |
title_full |
Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye |
title_fullStr |
Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye |
title_full_unstemmed |
Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye |
title_sort |
magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (physeter macrocephalus) teeth and eye |
publisher |
BMC |
publishDate |
2017 |
url |
https://doi.org/10.1186/s13028-017-0307-y https://doaj.org/article/f79eacb9c0684e2895c40e7a82ead777 |
genre |
Physeter macrocephalus Sperm whale |
genre_facet |
Physeter macrocephalus Sperm whale |
op_source |
Acta Veterinaria Scandinavica, Vol 59, Iss 1, Pp 1-8 (2017) |
op_relation |
http://link.springer.com/article/10.1186/s13028-017-0307-y https://doaj.org/toc/1751-0147 doi:10.1186/s13028-017-0307-y 1751-0147 https://doaj.org/article/f79eacb9c0684e2895c40e7a82ead777 |
op_doi |
https://doi.org/10.1186/s13028-017-0307-y |
container_title |
Acta Veterinaria Scandinavica |
container_volume |
59 |
container_issue |
1 |
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1766168236976504832 |