马蹄蟹的磁共振成像形态学评估。

MORPHOLOGICAL ASSESSMENT OF HORSESHOE CRABS () BY USING MAGNETIC RESONANCE IMAGING.

机构信息

Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, 794-8555, Japan,

Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, 794-8555, Japan.

出版信息

J Zoo Wildl Med. 2019 Sep;50(3):742-748. doi: 10.1638/2018-0195.

DOI:10.1638/2018-0195

PMID:33517650

Abstract

The population of , a horseshoe crab, has decreased sharply in Japan. With the exception of a few reports regarding the morphological features of , a three-dimensional analysis of its inner anatomical structures has never been documented. Here, the anatomical structures in two specimens were examined using magnetic resonance imaging (MRI). In the larger of the two specimens, the three-dimensional T2-weighted image clearly revealed muscles, digestive and urinary systems, ovary, and brain; however, the cardiovascular system was poorly visualized. In the smaller specimen, cardiovascular, digestive, and urinary systems were identifiable. In the three-dimensional T1-weighted images, tissue contrast was low, making it challenging to distinguish the individual organs. These results suggest that MRI is a powerful tool for visualizing the inner anatomical structures of horseshoe crabs.

摘要

日本鲎的数量急剧减少。除了少数关于其形态特征的报道外，其内部解剖结构的三维分析从未有文献记录。在这里，使用磁共振成像（MRI）检查了两个标本的解剖结构。在两个标本中较大的一个中，三维 T2 加权图像清晰地显示了肌肉、消化系统和泌尿系统、卵巢和大脑；然而，心血管系统的可视化效果较差。在较小的标本中，可以识别心血管、消化和泌尿系统。在三维 T1 加权图像中，组织对比度低，难以区分各个器官。这些结果表明，MRI 是可视化鲎内部解剖结构的有力工具。