CT DICOM studies from: In vivo measurements of lung volumes in ringed seals: insights from biomedical imaging

Hermann-Sorensen, Holly; Thometz, Nicole M.; Woodie, Kathleen; Dennison, Sophie; Reichmuth, Colleen

doi:10.7291/d1r68j

2020

DOI: 10.7291/d1r68j

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CT DICOM studies from: In vivo measurements of lung volumes in ringed seals: insights from biomedical imaging

Holly Hermann-Sorensen¹,

Nicole M. Thometz²,

Kathleen Woodie³

et al.

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In Vivo Measurements of Lung Volumes in Ringed Seals: Insights from Biomedical Imaging

Hermann-Sorensen

Thometz

Woodie

et al. 2020

Journal of Experimental Biology

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Marine mammals rely on oxygen stored in blood, muscle and lungs to support breath-hold diving and foraging at sea. Here, we used biomedical imaging to examine lung oxygen stores and other key respiratory parameters in living ringed seals (Pusa hispida). Three-dimensional models created from computed tomography (CT) images were used to quantify total lung capacity (TLC), respiratory dead space, minimum air volume and total body volume to improve assessment of lung oxygen storage capacity, scaling relationships and buoyant force estimates. The results suggest that lung oxygen stores determined in vivo are smaller than those derived from postmortem measurements. We also demonstrate that, whereas established allometric relationships hold well for most pinnipeds, these relationships consistently overestimate TLC for the smallest phocid seal. Finally, measures of total body volume reveal differences in body density and net vertical forces in the water column that influence costs associated with diving and foraging in free-ranging seals.

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In Vivo Measurements of Lung Volumes in Ringed Seals: Insights from Biomedical Imaging

Hermann-Sorensen

Thometz

Woodie

et al. 2020

Journal of Experimental Biology

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show abstract

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CT DICOM studies from: In vivo measurements of lung volumes in ringed seals: insights from biomedical imaging

Cited by 1 publication

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In Vivo Measurements of Lung Volumes in Ringed Seals: Insights from Biomedical Imaging

In Vivo Measurements of Lung Volumes in Ringed Seals: Insights from Biomedical Imaging

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