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Title:
異なる繰返し時間を有する2つのMRI画像から導出される低周波数(<1MHz)交流導電率推定
Document Type and Number:
Japanese Patent JP7225373
Kind Code:
B2
Abstract:
A 3D model of AC electrical conductivity (at a given frequency) of an anatomic volume can be created by obtaining two MRI images of the anatomic volume, where the two images have different repetition times. Then, for each voxel in the anatomic volume, a ratio IR of the intensity of the corresponding voxels in the two MRI images is calculated. This calculated IR is then mapped into a corresponding voxel of a 3D model of AC electrical conductivity at the given frequency. The given frequency is below 1 MHz (e.g., 200 kHz). In some embodiments, the 3D model of AC electrical conductivity at the given frequency is used to determine the positions for the electrodes in TTFields (Tumor Treating Fields) treatment.

Inventors:
Zeve Bonzon
Cornelia Wenger
Catherine Tempel-Brami
Hadath Herschkovich
Moshe Giraday
Application Number:
JP2021504591A
Publication Date:
February 20, 2023
Filing Date:
April 09, 2019
Export Citation:
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Assignee:
Zeve Bonzon
Cornelia Wenger
Catherine Tempel-Brami
Hadath Herschkovich
Moshe Giraday
International Classes:
A61B5/055
Foreign References:
US20170120041
US20060017749
US20070043268
US20100113959
Other References:
Eric Michel, et al.,Electrical Conductivity and Permittivity Maps of Brain Tissues Derived from Water Content Based on T1-Weighted Acquisition,Magnetic Resonance in Medicine,2017年,77,pp.1094-1103
Attorney, Agent or Firm:
Murayama Yasuhiko
Shinya Mihiro
Tatsuhiko Abe