MEG beamforming: magnetic source imaging

Tianhu Lei; Timothy P. L. Roberts

doi:10.1117/12.812149

13 March 2009 MEG beamforming: magnetic source imaging

Tianhu Lei, Timothy P. L. Roberts

Proceedings Volume 7258, Medical Imaging 2009: Physics of Medical Imaging; 72584C (2009) https://doi.org/10.1117/12.812149
Event: SPIE Medical Imaging, 2009, Lake Buena Vista (Orlando Area), Florida, United States

Abstract

Magnetoencephalography (MEG) is a multi-channel imaging technique. It measures the magnetic field produced by electric currents inside the brain via an array composed of a large number of superconducting quantum interference devices sensors. These measurements are then used to estimate the location and the strength of those electric currents. The estimated quantities are superimposed with anatomic magnetic resonance images via coregistration to create the magnetic source images. This paper attempts to present a theoretic framework of MEG beamforming for magnetic source imaging by aiming at some fundamental issues and providing several new findings in the five related aspects: (i) physical concept, (ii) mathematical formulation, (iii) statistical description, (iv) beamforming principle, and (v) magnetic source images.

Citation Download Citation

Tianhu Lei and Timothy P. L. Roberts "MEG beamforming: magnetic source imaging", Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 72584C (13 March 2009); https://doi.org/10.1117/12.812149

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available