Hemsley S, Palmer H, Canfield R B, Stewart M E B, Krockenberger M B, Malik R
Faculty Veterinary Science B01, University of Sydney, New South Wales, Australia.
Aust Vet J. 2013 Sep;91(9):353-65. doi: 10.1111/avj.12098.
To use cross-sectional imaging (helical computed tomography (CT)) combined with conventional anatomical dissection to define the normal anatomy of the nasal cavity and bony cavitations of the koala skull.
Helical CT scans of the heads of nine adult animals were obtained using a multislice scanner acquiring thin slices reconstructed in the transverse, sagittal and dorsal planes. Subsequent anatomical dissection permitted confirmation of correct identification and further delineation of bony and air-filled structures visible in axial and multiplanar reformatted CT images.
The nasal cavity was relatively simple, with little scrolling of nasal conchae, but bony cavitations were complex and extensive. A rostral maxillary recess and ventral conchal, caudal maxillary, frontal and sphenoidal paranasal sinuses were identified and characterised. Extensive temporal bone cavitation was shown to be related to a large epitympanic recess.
The detailed anatomical data provided are applicable to future functional and comparative anatomical studies, as well as providing a preliminary atlas for clinical investigation of conditions such as cryptococcal rhinosinusitis, a condition more common in the koala than in many other species.
运用横断面成像技术（螺旋计算机断层扫描（CT））结合传统解剖学 dissection，来明确树袋熊颅骨鼻腔和骨性腔隙的正常解剖结构。
使用多层扫描仪对9只成年动物的头部进行螺旋CT扫描，获取薄切片，并在横断、矢状和背侧平面进行重建。随后进行解剖 dissection，以确认正确识别并进一步描绘在轴向和多平面重建CT图像中可见的骨性和含气结构。
鼻腔相对简单，鼻甲卷曲较少，但骨性腔隙复杂且广泛。确定并描述了一个吻侧上颌隐窝以及腹侧鼻甲、尾侧上颌、额和蝶窦。广泛的颞骨腔隙显示与一个大的鼓室上隐窝有关。
所提供的详细解剖学数据适用于未来的功能和比较解剖学研究，同时也为诸如隐球菌性鼻旁窦炎等疾病的临床研究提供了初步图谱，隐球菌性鼻旁窦炎在树袋熊中比在许多其他物种中更为常见。
