Model for B-1 imaging in MRI using the rotating RF field

Trakic, Adnan, Jin, Jin, Weber, Ewald and Crozier, Stuart (2014) Model for B-1 imaging in MRI using the rotating RF field. Computational and Mathematical Methods in Medicine, 2014 461647: 1-12. doi:10.1155/2014/461647

Author Trakic, Adnan
Jin, Jin
Weber, Ewald
Crozier, Stuart
Title Model for B-1 imaging in MRI using the rotating RF field
Formatted title
Model for 𝐵1 imaging in MRI using the rotating RF field
Journal name Computational and Mathematical Methods in Medicine   Check publisher's open access policy
ISSN 1748-670X
Publication date 2014-05-19
Sub-type Article (original research)
DOI 10.1155/2014/461647
Open Access Status DOI
Volume 2014
Issue 461647
Start page 1
End page 12
Total pages 12
Place of publication New York, NY, United States
Publisher Hindawi Publishing
Collection year 2015
Language eng
Formatted abstract
Conventionally, magnetic resonance imaging (MRI) is performed by pulsing gradient coils,which invariably leads to strong acoustic noise, patient safety concerns due to induced currents, and costly power/space requirements. This modeling study investigates a new silent, gradient coil-free MR imaging method, in which a radiofrequency (RF) coil and its nonuniform field (𝐵1+) are mechanically rotated about the patient. The advantage of the rotating 𝐵1+ field is that, for the first time, it provides a large number of degrees of freedom to aid a successful 𝐵1+ image encoding process. The mathematical modeling was performed using flip angle modulation as part of a finite-difference-based Bloch equation solver. Preliminary results suggest that representative MR images with intensity deviations of <5% from the original image can be obtained using rotating RF field approach. This method may open up new avenues towards anatomical and functional imaging in medicine.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Information Technology and Electrical Engineering Publications
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Created: Tue, 20 May 2014, 19:28:09 EST by Mr Jin Jin on behalf of School of Information Technol and Elec Engineering