Abstract
The sonography of the spine and spinal cord was performed in 25 patients. In all patients except for one with spinal dysraphism was performed intraoperative sonography. The techniques were easy, non-invasive and in essence the same whichever again is being scanned. With extradural masses, intraoperative spinal sonography (IOSS) indicated the exact size and location of the masses and confirmed their removal and/ or adequate spinal cord decompression. With intradural lesion, IOSS showed not only localizing and characterizing lesion but also was able to demonstrate the zone of transition between the lesion and normal tissue without opening the dura mater. In patients with bony defect of the posterior arch of the spine, such as spinal dysraphism and post surgical laminectomy, sonography fascilitated the diagnosis of spinal cord tethering and suggested to be useful in the preoperative evaluation of recurrent spinal cord tumors.
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