Bansal M
Throat Hospital, Anand, Gujarat.
Indian J Otolaryngol Head Neck Surg. 2000 Jul;52(3):311-4. doi: 10.1007/BF03006217.
CT and MR imaging give spatial information of patient's disease and anatomy. They help in preoperative surgical planning and guide the surgeon during operation. In conventional Functional Endoscopic Sinus Surgery (FESS), surgeon mentally correlates the information of CT and MR with the direct sinuscopic view of operative field. In Computer-Assisted Functional Endoscopic Sinus Surgery ( C-A FESS), computer provides image guidance for the surgeon. Surgeon can appreciate ike immediate surrounding structures outside the direct endoscopic vision of the surface. Thus widely enhancing the field of endoscopic mage. The overall accuracy of 1 to 2 mm has been reported. Many systems of tracing are being developed and tested far. Each system has its own advantages and disadvantages. It is now possible to guide mrgery with intraoperatively acquired MR images. The real-time imaging shows the tissue changes occurring during the operation. Surgeon can safely operate the lesions of optic nerve, sphenoid sinuses, pituitary gland, and cranial base.
CT和磁共振成像可提供患者疾病和解剖结构的空间信息。它们有助于术前手术规划，并在手术过程中为外科医生提供指导。在传统的功能性鼻内镜鼻窦手术（FESS）中，外科医生在脑海中将CT和磁共振成像的信息与手术视野的直接鼻窦镜视图相关联。在计算机辅助功能性鼻内镜鼻窦手术（C-A FESS）中，计算机为外科医生提供图像引导。外科医生可以了解表面直接内镜视野之外的紧邻周围结构。从而广泛扩展了内镜成像的视野。据报道，整体精度为1至2毫米。目前正在开发和测试许多追踪系统。每个系统都有其自身的优缺点。现在可以使用术中获取的磁共振图像来指导手术。实时成像显示手术过程中发生的组织变化。外科医生可以安全地操作视神经、蝶窦、垂体和颅底的病变。
