雑誌文献を検索します。書籍を検索する際には「書籍検索」を選択してください。

検索

書誌情報 詳細検索 by 医中誌

Japanese

Applications of Optical Topography in Neurosurgery Eiju Watanabe 1 1Department of Neurosurgery,Jichi Medical University Keyword: nearinfrared light , language , epilepsy focus , functional brain mapping pp.459-466
Published Date 2007/5/1
DOI https://doi.org/10.11477/mf.1416100039
  • Abstract
  • Look Inside
  • Reference

Abstract

 Optical topography is a new alternative for noninvasive functional brain mapping. It uses near infrared light projected from the scalp into the brain. The reflected light which is sampled 30mm apart from the injection probe carries the information of hemoglobin concentration change of the regional brain tissue lying at the midpoint of probes. When mapped using 24 channels,we see the real time brain activities during various tasks allowing the head movements as well. It is utilized in measuring the language function,and diagnosis of epilepsy focus. Several such clinical applications are demonstrated. The brain activities are measured during finger tapping. The mapping during word generation task shows the activities of Broca's area indicating the hemispheric dominancy of language function. We correlated the results between optical topography measurement and amytal test,showing 85% matching according to the language dominancy. It also useful in identifying the epilepsy focus because the hemoglobin increases at the focus region in the initial phase of epileptic seizures. In our study,the feasibility of optical topography in focus diagnosis is confirmed in 85% of 27 cases. The advantages of optical topography are as follows. 1: It is portable to various clinical scenes including patient ward and outpatient clinic. 2: It can be used conjunction with fMRI and MEG. 3: It measures the brain activities even during the head movements.


Copyright © 2007, Igaku-Shoin Ltd. All rights reserved.

基本情報

電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

関連文献

もっと見る

文献を共有