Comparative evaluation of the cadaveric, radiographic and computed tomographic anatomy of the heads of green iguana (Iguana iguana), common tegu (Tupinambis merianae) and bearded dragon (Pogona vitticeps)
Comparative evaluation of the cadaveric, radiographic and computed tomographic anatomy of the heads of green iguana (Iguana iguana), common tegu (Tupinambis merianae) and bearded dragon (Pogona vitticeps)
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DOI：
10.1186/1746-6148-8-53
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发表时间：
2012-05-11
影响因子：
2.6
通讯作者：
Zotti, Alessandro
中科院分区：
文献类型：
--
作者：
Banzato, Tommaso;Selleri, Paolo;Zotti, Alessandro
背景资料：放射学和计算机断层扫描是兽医实践中最常用的诊断工具，用于诊断影响头部和颅骨的病理。然而，影像学和CT研究的准确解释需要全面了解大体和横断面解剖。尽管爬行动物作为宠物越来越成功，但目前只有少数关于其正常成像特征的报道。结果：成年绿鬣蜥6只、泰古4只、须蜥3只，成年绿鬣蜥4只、泰古4只、须蜥4只，其头部的X线片和CT表现均与正常人头部的X线片和CT表现一致。按照地层学方法解剖2具尸体，并对每个物种的2具尸体进行横切。将这些后一种标本储存在冰箱（-20 ℃）中，直至完全冷冻。通过电动带锯以5 mm的间隔获得横切面。清洁每个切片并在两侧拍照。获得每例受试者头部的X线片。对所有活体动物进行头部对比前后计算机断层扫描研究。CT图像在骨窗和软组织窗均有显示。首先在解剖图像上识别并标记单个解剖结构，然后在X线片和CT图像上进行匹配。颅骨的X线和CT图像提供了所有物种骨结构的良好细节。在CT造影剂注射使软组织的细节，以获得在鬣蜥，而只有眼睛是清楚地区别于其余的软组织在tegu和胡子龙。结论：结果提供了蜥蜴头部的正常解剖学和体内放射照相和计算机断层扫描特征的图谱，这可能有助于解释涉及这些物种的任何成像方式。
Background: Radiology and computed tomography are the most commonly available diagnostic tools for the diagnosis of pathologies affecting the head and skull in veterinary practice. Nevertheless, accurate interpretation of radiographic and CT studies requires a thorough knowledge of the gross and the cross-sectional anatomy. Despite the increasing success of reptiles as pets, only a few reports over their normal imaging features are currently available. The aim of this study is to describe the normal cadaveric, radiographic and computed tomographic features of the heads of the green iguana, tegu and bearded dragon.Results: 6 adult green iguanas, 4 tegus, 3 bearded dragons, and, the adult cadavers of : 4 green iguana, 4 tegu, 4 bearded dragon were included in the study. 2 cadavers were dissected following a stratigraphic approach and 2 cadavers were cross-sectioned for each species. These latter specimens were stored in a freezer (-20 degrees C) until completely frozen. Transversal sections at 5 mm intervals were obtained by means of an electric band-saw. Each section was cleaned and photographed on both sides. Radiographs of the head of each subject were obtained. Pre- and post-contrast computed tomographic studies of the head were performed on all the live animals. CT images were displayed in both bone and soft tissue windows. Individual anatomic structures were first recognised and labelled on the anatomic images and then matched on radiographs and CT images. Radiographic and CT images of the skull provided good detail of the bony structures in all species. In CT contrast medium injection enabled good detail of the soft tissues to be obtained in the iguana whereas only the eye was clearly distinguishable from the remaining soft tissues in both the tegu and the bearded dragon.Conclusions: The results provide an atlas of the normal anatomical and in vivo radiographic and computed tomographic features of the heads of lizards, and this may be useful in interpreting any imaging modality involving these species.