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Prionace glauca (Pole shark): seriated CT‐scan and reconstructions: horizontal, sagittal and 3D
Author(s) -
Le FlochPrigent Patrice Pierre,
Verdeille Stéphane
Publication year - 2018
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.2018.32.1_supplement.lb536
Subject(s) - sagittal plane , anatomy , computed tomography , nuclear medicine , medicine , radiology
The pole shark ( Prionace glauca , Linnaeus 1758) is a common, pelagian condrichtyan. Material The entire, rostral extremity (28,4cm long) of an adult specimen was CT‐scanned all along the rostro‐caudal axis, in axial cross‐sections and reconstructed in the two other planes and in 3‐dimensional ones. The CT‐scan apparatus was a Siemens somatom, whole‐body apparatus with 64 detectors. Methods The frozen shark's head was laid in prone position on the radiological table. It was CT‐scanned with an acquisition (100kV, 18mAs) in the axial plane. The frontal cross‐sections (every 0,8 mm, 1 m thick) were joined. Two different penetrations were used: B30 for the soft parts and B70 for the hard parts (cartilage and extra‐skeleton). Results 355 frontal cross‐sections were obtained from the native, axial acquisition. 100 para‐sagittal cross‐sections were reconstructed from the preceeding ones and 100 horizontal ones as well. 16, 3D reconstructions were realized with several, different incidences and penetrations. Conclusion The seriated CT‐scan and the reconstructions gave numerous morphological elements in Prionace glauca, as well as in the study of their relationships. The muscular masses presented very few differenciation. The cartilaginous structures were well vizualized, as the eye and the central nervous system, the teeth were particularly easy to study, on the reconstructions, noticeably the successive raws in the inferior jaw. We thanks the “Le Venec” Company for the delivery of the animal material and Mr Lionel Feuillassier (Marinarium, Muséum National d'Histoire Naturelle), both in the town of Concarneau (Brittany, France). This abstract is from the Experimental Biology 2018 Meeting. There is no full text article associated with this abstract published in The FASEB Journal .