The Usefulness of Ultrasonography in Neurosurgical Operations
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概要
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An intraoperative ultrasound scanner system (USS) was utilized on 28 patients (24 with intracranial lesions and four with spinal lesions) at Tsukuba University Hospital. The USS (Hitachi, Inc., Type EUB-415, Japan) was used for all patients. This apparatus includes a real-time display with a convex array and a 13-mm finger-tip transducer with a transmitting freguency of 5-6.5 MHz. Intraoperative ultrasonography is useful for reconf irming the size and location of the lesion and assists optimization of the operation procedure. It is also helpful before a tumor resection after craniotomy, during procedures such as cyst and hematoma puncture, and in diagnosing the cause of acute brain swelling during a tumor resection. It can also be used to check the removal of a tumor after resection. However, intraoperative ultrasonography after a tumor resection is less effective in detecting the residual tumor because small clots, hemostatic materials, and the postoperative cavity are obstacles to the ultrasound. Although there are limits to the resolution of the ultrasonography, it is very useful for a complete perspective of the operative procedure in the neurosurgical field.
- 日本脳神経超音波学会の論文