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[Application of three demensional reconstruction of CT in lateral cranial base surgery]
Objective:
To study the characteristics of 3D-CT of the lateral cranial base and its application in lateral cranial base surgery.
Methods:
Five normal adult subjects and 10 with lateral cranial base lesions were scanned with Philips Tomoscan SR 7000 CT scanner. The scanning ranges extended from the top to the bottom of the temporal bone, including whole lesions, with bone window algorithm and contiguous serial 1.5 mm thin-cut scans in succession in axial plane. The 3D-CT reconstruction was processed in the Easy Viewing CT/MRI workstation.
Results:
The 3D-CT reconstruction could clearly delineate the foraminan, fissures and important bony marks. The ranges of the lesions, the relationships between the lesions and the structures around them were demonstrated more clearly than 2D-CT. It was of important significance in differential diagnosis for jugular foramen lesions. 3D-CT could be used to imitate operation and design operative plan.
Conclusion:
3D-CT was of important value in diagnosis of lateral cranial base tumors, and could be used to imitate operation and design operative plan.