Thin-sectional Anatomy And 3D Reconstruction Of Sella Turcica And Adjacent Structures For Transsphenoidal Approach

In recent years, endoscope is increasingly used in neurosurgical operations with the development of neuroendoscope. Aiming at wide application of neuroendoscope in endonsal transsphenoidal surgery for the diseases relating to sella turcica, we studied the sectional anatomy around saddle of transsphenoidal approach and built its three-dimension (3-D) visible model. The visible human technique was used to collect the data of sella turcica and adjacent structures. After semi-automated segmentation on the serial cross-sectional image data with Photoshop and 3D-Doctor software, the related structures for transsphenoidal approach were reconstructed and visualized on personal computer with the software for tridimensional reconstruction. The 3-D structures for transsphenoidal approach were accurately displayed and measured. The main results are as following:1. By visible human technique, seven anatomical atlas of thin serial section image of the related structures for transsphenoidal approach including five transverse sections, one coronal and one sagittal section were obtained. The data set provided an accurate anatomical basis for neurosurgery and clinical imaging diagnosis. One data set of sella turcica and its adjacent structures which were accurately segmented was completed.2. The thin-sectional images of the related structures for transsphenoidal approach was used to learn the sectional imaging features of sella turcica and adjacent structures in transverse, coronal and sagittal planes. It can provide thin-sectional anatomic data for the imaging diagnosis of sella turcica diseases, and is conducive to selecting operation approach.3. The middle nasal concha, nasal septum, optic nerve, internal carotid artery, sphenoidal sinus, dorsum sellae, hypophysis and vomer were semiautomatically segmented with software such as Photoshop, 3D-Doctor and were volume rendering and surface rendering by reconstruction on computer. The reconstructed structures can be displayed singly, in small groups or as a whole, as well as can be rotated around any axis and displayed transparently. Any line and angle of the reconstruction can be conveniently...