Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye

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Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye. / Alstrup, Aage Kristian Olsen; Munk, Ole Lajord; Jensen, Trine Hammer; Jensen, Lasse Fast; Hedayat, Abdi; Hansen, Brian.

In: Acta Veterinaria Scandinavica (Online), Vol. 59, No. 38, 12.06.2017, p. 1-8.

Research output: Research - peer-reviewJournal article

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Alstrup, Aage Kristian Olsen ; Munk, Ole Lajord ; Jensen, Trine Hammer ; Jensen, Lasse Fast ; Hedayat, Abdi ; Hansen, Brian. / Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye. In: Acta Veterinaria Scandinavica (Online). 2017 ; Vol. 59, No. 38. pp. 1-8

Bibtex

@article{6b3571ac37134665a1451b65780f3b9a,
title = "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) areuseful tools in veterinary and human medicine. Here we demonstrate the usefulness of these techniques in the studyof the anatomy of wild marine mammals as part of a necropsy. MRI and CT scans of sperm whale teeth (n = 4) wereperformed. The methods were compared and further compared to current standard methods for evaluation of toothlayering. For MRI a zero echo time sequence was used, as previously done for imaging of intact human teeth. For CTtwo different clinical scanners were used.Results: The three scanners did not provide sufficient information to allow age estimation, but both MRI and CTprovided anatomical information about the tooth cortex and medulla without the need for sectioning the teeth. MRIscanning 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 requirewell-preserved tissue. It was not possible to estimate age based on CT scans of tooth growth lines. Further researchis needed to clarify the usability of MRI and CT as tools for marine mammal research when samples need to remainintact or when a spatial (three dimensional) arrangement of features needs to be determined.",
author = "Alstrup, {Aage Kristian Olsen} and Munk, {Ole Lajord} and Jensen, {Trine Hammer} and Jensen, {Lasse Fast} and Abdi Hedayat and Brian Hansen",
year = "2017",
month = "6",
volume = "59",
pages = "1--8",
journal = "Acta Veterinaria Scandinavica (Online)",
issn = "1751-0147",
publisher = "BioMed Central Ltd.",
number = "38",

}

RIS

TY - JOUR

T1 - Magnetic resonance imaging and computed tomography as tools for the investigation of sperm whale (Physeter macrocephalus) teeth and eye

AU - Alstrup,Aage Kristian Olsen

AU - Munk,Ole Lajord

AU - Jensen,Trine Hammer

AU - Jensen,Lasse Fast

AU - Hedayat,Abdi

AU - Hansen,Brian

PY - 2017/6/12

Y1 - 2017/6/12

N2 - Background: Scanning techniques such as magnetic resonance imaging (MRI) and computed tomography (CT) areuseful tools in veterinary and human medicine. Here we demonstrate the usefulness of these techniques in the studyof the anatomy of wild marine mammals as part of a necropsy. MRI and CT scans of sperm whale teeth (n = 4) wereperformed. The methods were compared and further compared to current standard methods for evaluation of toothlayering. For MRI a zero echo time sequence was used, as previously done for imaging of intact human teeth. For CTtwo different clinical scanners were used.Results: The three scanners did not provide sufficient information to allow age estimation, but both MRI and CTprovided anatomical information about the tooth cortex and medulla without the need for sectioning the teeth. MRIscanning 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 requirewell-preserved tissue. It was not possible to estimate age based on CT scans of tooth growth lines. Further researchis needed to clarify the usability of MRI and CT as tools for marine mammal research when samples need to remainintact or when a spatial (three dimensional) arrangement of features needs to be determined.

AB - Background: Scanning techniques such as magnetic resonance imaging (MRI) and computed tomography (CT) areuseful tools in veterinary and human medicine. Here we demonstrate the usefulness of these techniques in the studyof the anatomy of wild marine mammals as part of a necropsy. MRI and CT scans of sperm whale teeth (n = 4) wereperformed. The methods were compared and further compared to current standard methods for evaluation of toothlayering. For MRI a zero echo time sequence was used, as previously done for imaging of intact human teeth. For CTtwo different clinical scanners were used.Results: The three scanners did not provide sufficient information to allow age estimation, but both MRI and CTprovided anatomical information about the tooth cortex and medulla without the need for sectioning the teeth. MRIscanning 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 requirewell-preserved tissue. It was not possible to estimate age based on CT scans of tooth growth lines. Further researchis needed to clarify the usability of MRI and CT as tools for marine mammal research when samples need to remainintact or when a spatial (three dimensional) arrangement of features needs to be determined.

M3 - Journal article

VL - 59

SP - 1

EP - 8

JO - Acta Veterinaria Scandinavica (Online)

T2 - Acta Veterinaria Scandinavica (Online)

JF - Acta Veterinaria Scandinavica (Online)

SN - 1751-0147

IS - 38

ER -