Development for non-uniformity correction of whole human brain image at high field MRI

2015 Fiscal Year Final Research Report

• Project/Area Number: 24591802
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Radiation science
• Research Institution: National Institute for Environmental Studies
• Principal Investigator: WATANABE HIDEHIRO 国立研究開発法人国立環境研究所, 環境計測研究センター, 室長 (60370269)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 磁気共鳴 / 高磁場 / 高周波磁場 / 画像不均一性 / 磁気共鳴診断装置 / ヒト / 脳 / 高周波磁場コイル

Outline of Final Research Achievements

The magnetic resonance system (MR system) is a powerful tool in the clinical filed. Images with higher sensitivity, higher resolution and higher contrast can be achieved at higher static magnetic field strength. However, non-uniformity of image is caused due to inhomogeneous radio frequency magnetic field distribution. In this research, we proposed a non-uniformity correction method to overcome this problem and developed the techniques that are required for correction of the whole human brain image. We previously develpoed the ratio map method for a single silce correction. In this work, we improved this method and applied it to multiple slice correction.

Free Research Field

磁気共鳴医学