利用先进的计算机断层扫描技术对软骨鱼类的软骨骨骼进行分割。
Segmentations of the cartilaginous skeletons of chondrichthyan fishes by the use of state-of-the-art computed tomography.
作者信息
McQuiston Andrew D, Crawford Callie, Schoepf U Joseph, Varga-Szemes Akos, Canstein Christian, Renker Matthias, De Cecco Carlo N, Baumann Stefan, Naylor Gavin J P
机构信息
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.
出版信息
World J Radiol. 2017 Apr 28;9(4):191-198. doi: 10.4329/wjr.v9.i4.191.
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 generation DSCT. The formalin prepared species examined were: , , and .
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.
目的
应用双源多探测器计算机断层扫描（DSCT）技术结合计算机辅助分割，以探索和记录在进化过程中发生的骨骼变异。
方法
我们使用高分辨率第三代DSCT检查了4种不同的板鳃亚类物种。经福尔马林处理的检查物种有： 、 、 和 。
结果
舌弓的所有三个结构（舌颌骨、角舌骨和基舌骨）都清晰可见，而在两种鳐类中，舌颌骨是突出特征，角舌骨不可见，基舌骨更退化且更靠近鳃弓。耻骨坐骨棒或骨盆带的总体形状表明，两种鲨鱼和两种鳐类之间的关系比两组之间的关系更密切。
结论
DSCT成像以极高的细节揭示了所研究的四个板鳃亚类标本中各种常见结构的重要形态变异，为它们的进化多样性提供了见解。
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