title: Intraoperative ultrasound assistance in resection of intracranial meningiomas.
abstract: OBJECTIVE
  Intracranial meningiomas, especially those located at anterior and middle skull base, are difficult to be completely resected due to their complicated anatomy structures and adjacent vessels. It's essential to locate the tumor and its vessels precisely during operation to reduce the risk of neurological deficits. The purpose of this study was to evaluate intraoperative ultrasonography in displaying intracranial meningioma and its surrounding arteries, and evaluate its potential to improve surgical precision and minimize surgical trauma.
  
  
  METHODS
  Between December 2011 and January 2013, 20 patients with anterior and middle skull base meningioma underwent surgery with the assistance of intraoperative ultrasonography in the Neurosurgery Department of Shanghai Huashan Hospital. There were 7 male and 13 female patients, aged from 31 to 66 years old. Their sonographic features were analyzed and the advantages of intraoperative ultrasonography were discussed.
  
  
  RESULTS
  The border of the meningioma and its adjacent vessels could be exhibited on intraoperative ultrasonography. The sonographic visualization allowed the neurosurgeon to choose an appropriate approach before the operation. In addition, intraoperative ultrasonography could inform neurosurgeons about the location of the tumor, its relation to the surrounding arteries during the operation, thus these essential arteries could be protected carefully.
  
  
  CONCLUSIONS
  Intraoperative ultrasonography is a useful intraoperative technique. When appropriately applied to assist surgical procedures for intracranial meningioma, it could offer very important intraoperative information (such as the tumor supplying vessels) that helps to improve surgical resection and therefore might reduce the postoperative morbidity.
authors.affiliation: Neurosurgery Department of Huashan Hospital, Shanghai 200040, China;
authors.forename: Hailiang
authors.initials: H
authors.lastname: Tang
authors.forename: Huaping
authors.initials: H
authors.lastname: Sun
authors.forename: Liqian
authors.initials: L
authors.lastname: Xie
authors.forename: Qisheng
authors.initials: Q
authors.lastname: Tang
authors.forename: Ye
authors.initials: Y
authors.lastname: Gong
authors.forename: Ying
authors.initials: Y
authors.lastname: Mao
authors.forename: Qing
authors.initials: Q
authors.lastname: Xie
authors.forename: Mingzhe
authors.initials: M
authors.lastname: Zheng
authors.forename: Daijun
authors.initials: D
authors.lastname: Wang
authors.forename: Hongda
authors.initials: H
authors.lastname: Zhu
authors.forename: Jianhong
authors.initials: J
authors.lastname: Zhu
authors.forename: Xiaoyuan
authors.initials: X
authors.lastname: Feng
authors.forename: Zhenwei
authors.initials: Z
authors.lastname: Yao
authors.forename: Xiancheng
authors.initials: X
authors.lastname: Chen
authors.forename: Liangfu
authors.initials: L
authors.lastname: Zhou
keywords: Intraoperative ultrasonography; intracranial meningioma