Olson K L, Manolidis S, Hayman L A, Chan L L, Taber K H
Bobby R. Alford Department of Otorhinolaryngology and Communicative Sciences, Baylor College of Medicine, Houston, Texas 77030, USA.
Laryngoscope. 2001 Dec;111(12):2095-9. doi: 10.1097/00005537-200112000-00002.
To facilitate planning in temporal bone surgery for the middle cranial fossa approach by using sagittal reconstructed temporal bone computed tomography images.
Comparison of anatomic measurements on random high-resolution, reformatted computed tomography scans of the temporal bone.
High-resolution computed tomography of 10 normal temporal bones in the axial and coronal planes was obtained, and two-dimensional sagittal reconstructions were performed using a commercial software program. Eight anatomical relationships between neural and/or vascular structures were measured. Representative images were inverted to recreate the plane of the middle cranial fossa approach.
Anatomical relationships among the vestibule, superior semicircular canal, internal auditory canal, internal carotid artery, and middle cranial fossa exhibited a high SD in the 10 subjects. The sample size and the large range for the eight anatomical relationships precluded the detection of a significant difference between right and left temporal bones or sex and age of the patient.
The present report presents a novel, practical measurement protocol for rapidly evaluating important individual anatomical differences in patients before middle cranial fossa surgery. Inverted sagittal reconstructions facilitate presurgical planning for the middle cranial fossa approach by 1) assessing critical anatomical relationships before surgery and 2) providing customized measurements between vital landmarks and the first in vivo measurements. This decreases the likelihood of surgical mishaps and improves teaching by providing the first in vivo measurements of practical anatomical relationships in the sagittal plane.
通过使用矢状面重建颞骨计算机断层扫描图像，促进中颅窝入路颞骨手术的规划。
对随机选取的颞骨高分辨率、重新格式化计算机断层扫描图像上的解剖测量进行比较。
获取10例正常颞骨的轴位和冠状位高分辨率计算机断层扫描图像，并使用商业软件程序进行二维矢状面重建。测量神经和/或血管结构之间的8种解剖关系。将代表性图像反转以重建中颅窝入路平面。
在10名受试者中，前庭、上半规管、内耳道、颈内动脉和中颅窝之间的解剖关系显示出较高的标准差。8种解剖关系的样本量和较大范围使得无法检测出左右颞骨之间或患者性别与年龄之间的显著差异。
本报告提出了一种新颖、实用的测量方案，用于在中颅窝手术前快速评估患者重要的个体解剖差异。矢状面反转重建通过以下方式促进中颅窝入路的术前规划：1）在手术前评估关键解剖关系；2）提供重要标志点之间的定制测量以及首次活体测量。这降低了手术失误的可能性，并通过提供矢状面实际解剖关系的首次活体测量来改进教学。
