Anatomy and three-dimensional reconstructions of the brain of a bottlenose dolphin (Tursiops truncatus) from magnetic resonance images
Anatomy and three-dimensional reconstructions of the brain of a bottlenose dolphin (Tursiops truncatus) from magnetic resonance images
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DOI：
10.1002/ar.10018
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发表时间：
2001-12-01
影响因子：
--
通讯作者：
Johnson, JI
中科院分区：
文献类型：
--
作者：
Marino, L;Sudheimer, KD;Johnson, JI
鲸目动物（海豚、鲸鱼和海豚）的大脑是被研究最少的哺乳动物大脑之一，因为收集和从组织学上准备这些相对罕见和大的样本是很困难的，磁共振成像提供了一种观察大脑内部结构的方法，当传统的组织学方法不实用的时候。此外，内部结构可以在其精确的解剖位置进行分析，这在通常伴随组织学处理的空间畸变后很难完成。在这项研究中，对一只成年宽吻海豚（Tursiops truncatus）的大脑进行了冠状面前后148个水平的扫描。从这些扫描中，使用Voxel-View和VoxelMath （Vital Images, Inc.）程序构建了计算机生成的三维模型。该模型在三维空间中表示内部和外部形态的细节，然后在正交平面上进行切割，在水平和矢状面上产生相应的一系列虚拟切片。所有三个平面的切片显示了主要神经解剖学特征的大小和位置，如皮质叶和皮质下结构的排列，如下丘和上丘，并展示了MRI在海豚大脑神经解剖学研究中的实用性。科学通报，2001,(4):387 - 394。(C) 2001 Wiley-Liss, Inc。
Cetacean (dolphin, whale, and porpoise) brains are among the least studied mammalian brains because of the formidability of collecting and histologically preparing such relatively rare and large specimens, Magnetic resonance imaging offers a means of observing the internal structure of the brain when traditional histological procedures are not practical. Furthermore, internal structures can be analyzed in their precise anatomic positions, which is difficult to accomplish after the spatial distortions often accompanying histological processing. In this study, images of the brain of an adult bottlenose dolphin, Tursiops truncatus, were scanned in the coronal plane at 148 antero-posterior levels. From these scans a computer-generated three-dimensional model was constructed using the programs Voxel-View and VoxelMath (Vital Images, Inc.). This model, wherein details of internal and external morphology are represented in three-dimensional space, was then resectioned in orthogonal planes to produce corresponding series of virtual sections in the horizontal and sagittal planes. Sections in all three planes display the sizes and positions of major neuroanatomical features such as the arrangement of cortical lobes and subcortical structures such as the inferior and superior colliculi, and demonstrate the utility of MRI for neuroanatomical investigations of dolphin brains. Anat Rec 264:397-414, 2001. (C) 2001 Wiley-Liss, Inc.