Segmentations of the cartilaginous skeletons of chondrichthyan fishes by the use of state-of-the-art computed tomography.

Autor:	McQuiston AD; Andrew D McQuiston, U Joseph Schoepf, Akos Varga-Szemes, Matthias Renker, Carlo N De Cecco, Stefan Baumann, Division of Cardiovascular Imaging, Department of Radiology and Radiological Sciences, Medical University of South Carolina, Charleston, SC 29425, United States., Crawford C; Andrew D McQuiston, U Joseph Schoepf, Akos Varga-Szemes, Matthias Renker, Carlo N De Cecco, Stefan Baumann, Division of Cardiovascular Imaging, Department of Radiology and Radiological Sciences, Medical University of South Carolina, Charleston, SC 29425, United States., Schoepf UJ; Andrew D McQuiston, U Joseph Schoepf, Akos Varga-Szemes, Matthias Renker, Carlo N De Cecco, Stefan Baumann, Division of Cardiovascular Imaging, Department of Radiology and Radiological Sciences, Medical University of South Carolina, Charleston, SC 29425, United States., Varga-Szemes A; Andrew D McQuiston, U Joseph Schoepf, Akos Varga-Szemes, Matthias Renker, Carlo N De Cecco, Stefan Baumann, Division of Cardiovascular Imaging, Department of Radiology and Radiological Sciences, Medical University of South Carolina, Charleston, SC 29425, United States., Canstein C; Andrew D McQuiston, U Joseph Schoepf, Akos Varga-Szemes, Matthias Renker, Carlo N De Cecco, Stefan Baumann, Division of Cardiovascular Imaging, Department of Radiology and Radiological Sciences, Medical University of South Carolina, Charleston, SC 29425, United States., Renker M; Andrew D McQuiston, U Joseph Schoepf, Akos Varga-Szemes, Matthias Renker, Carlo N De Cecco, Stefan Baumann, Division of Cardiovascular Imaging, Department of Radiology and Radiological Sciences, Medical University of South Carolina, Charleston, SC 29425, United States., De Cecco CN; Andrew D McQuiston, U Joseph Schoepf, Akos Varga-Szemes, Matthias Renker, Carlo N De Cecco, Stefan Baumann, Division of Cardiovascular Imaging, Department of Radiology and Radiological Sciences, Medical University of South Carolina, Charleston, SC 29425, United States., Baumann S; Andrew D McQuiston, U Joseph Schoepf, Akos Varga-Szemes, Matthias Renker, Carlo N De Cecco, Stefan Baumann, Division of Cardiovascular Imaging, Department of Radiology and Radiological Sciences, Medical University of South Carolina, Charleston, SC 29425, United States., Naylor GJP; Andrew D McQuiston, U Joseph Schoepf, Akos Varga-Szemes, Matthias Renker, Carlo N De Cecco, Stefan Baumann, Division of Cardiovascular Imaging, Department of Radiology and Radiological Sciences, Medical University of South Carolina, Charleston, SC 29425, United States.
Jazyk:	angličtina
Zdroj:	World journal of radiology [World J Radiol] 2017 Apr 28; Vol. 9 (4), pp. 191-198.
DOI:	10.4329/wjr.v9.i4.191
Abstrakt:	Aim: To apply dual-source multidetector computed tomography (DSCT) scanning technology in conjunction with computationally assisted segmentation in order to explore and document skeletal variation that has occurred over the course of evolution. Methods: We examined 4 divergent species of elasmobranchs with high-resolution 3 rd generation DSCT. The formalin prepared species examined were: Aptychotrema vincentiana , Mitsukurina owstoni , Negaprion brevirostris and Dactylobatus armatus . Results: All three structures of the hyoid arch (hyomandibular, ceratohyal, and basihyal) were clearly visible whereas in the two batoids, the hyomandibular was the prominent feature, the ceratohyal was not visible and the basihyal was more reduced and closer to the gill arches. The general shape of the puboischiadic bar, or pelvic girdle, illustrated a closer relationship between the two sharks and the two batoids than between the two groups. Conclusion: In exquisite detail, DSCT imaging revealed important morphological variations in various common structures in the four elasmobranch specimens studied, providing insights into their evolutionary diversification. Competing Interests: Conflict-of-interest statement: U Joseph Schoepf, MD is a consultant for and/or receives research support from Astellas, Bayer, Bracco GE Healthcare, Guerbet, Medrad, and Siemens Healthineers. Drs. Akos Varga-Szemes and Carlo N. De Cecco were consultants for and/or received research support from Guerbet and Siemens. Christian Canstein, MSc is an employee of Siemens. The other authors declare that they have no conflicts-of-interest.
Databáze:	MEDLINE
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