10.7291/D1R68J
Hermann-Sorensen, Holly
0000-0001-7345-2129
University of California, Santa Cruz
Thometz, Nicole
University of San Francisco
Woodie, Kathleen
Alaska SeaLife Center
Dennison-Gibby, Sophie
Televet Imaging Solutions, PLLC
Reichmuth, Colleen
University of California, Santa Cruz
CT DICOM studies from: In vivo measurements of lung volumes in ringed
seals: insights from biomedical imaging
Dryad
dataset
2020
FOS: Biological sciences
National Oceanic and Atmospheric Administration
https://ror.org/02z5nhe81
NA15NMF4390166, NA16NMF4390027
2020-12-15T00:00:00Z
2020-12-15T00:00:00Z
en
1234435868 bytes
2
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
This dataset supports: Hermann-Sorensen, H., Thometz, N.M., Woodie, K.,
Dennison-Gibby, S., and Reichmuth, C. In vivo measurements of lung volumes
in ringed seals: insights from biomedical imaging. Journal of Experimental
Biology. 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 assessments of lung oxygen storage capacity,
scaling relationships, and buoyant force estimates. Results suggest that
lung oxygen stores determined in vivo are smaller than those derived from
typical postmortem measurements. We also demonstrate that—while
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 calculated
body density and net buoyant force that would influence costs associated
with diving and foraging in free-ranging seals.
CT data were obtained from living ringed seals under anesthesia with slice
thickness of 0.625 - 2.5 mm. Whole body scans were obtained when possible.
The dataset contains DICOM images from nine complete series obtained with
four individuals. Metadata associated with each series can be found in the
published manuscript.
Title of each file contains information about animal identification,
inflation pressure, patient position, and whether the scan was taken with
or without contrast. Details and subject metadata can be found in the
published manuscript; modified thoracic CT imaging protocols and scanner
information are provided in Table S1.