Automatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Automatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging
Automatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging
Automatic Design Tool for Robust Radio Frequency Decoupling Matrices in Magnetic Resonance ImagingbyZohaib MahmoodSubmitted to the School of Engineeri Automatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging ing in partial fulfillment of the requirements for the degree ofMaster of Science in Computation for Design and Optimizationat theMASSACHUSETTS INSTITUTE OF TECHNOLOGY42036© Massachusetts Institute of Technology 2015. All rights reserved.Signature redactedAuthor......................... ............ Automatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging .................School of Engineering42013Signature redactedCertified by........................Luca Daniel Emanuel E. Landsman Associate Professor oAutomatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging
f Electrical Engineering and Computer ScienceThesis SupervisorSignature redactedAccepted by..................... ...............................ZlktcoAutomatic Design Tool for Robust Radio Frequency Decoupling Matrices in Magnetic Resonance ImagingbyZohaib MahmoodSubmitted to the School of Engineeri Automatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging netic Resonance ImagingbyZohaib MahmoodSubmitted to the School of Engineering on January 9, 2015, in partial fulfillment of the requirements for the degree ofMaster of Science in Computation for Design and OptimizationAbstractIn this thesis we study the design of robust decoupling matrices for coupl Automatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging ed transmit radio frequency arrays used in magnetic resonance imaging (MRI). In a coupled parallel transmit array, because of the coupling itself, theAutomatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging
power delivered to a channel is typically partially re-distributed to other channels. This power must then be dissipated in circulators resulting intAutomatic Design Tool for Robust Radio Frequency Decoupling Matrices in Magnetic Resonance ImagingbyZohaib MahmoodSubmitted to the School of Engineeri Automatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging g mat rix interfaced between the RF amplifiers and the coils. The decoupling matrix is optimized to ensure all forward power is delivered to the load. The decoupling condition dictates that the admittance matrix seen by power amplifiers with 50 Ohms output impedance is a diagonal matrix with matchin Automatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging g (or 0.02 Siemens) at the diagonal. Our tool computes the values of the decoupling matrix via a non linear optimization and generate a physical realiAutomatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging
zation using reactive elements such as inductors and capacitors. The methods presented in this thesis scale to any arbitrary number of channels and caAutomatic Design Tool for Robust Radio Frequency Decoupling Matrices in Magnetic Resonance ImagingbyZohaib MahmoodSubmitted to the School of Engineeri Automatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging ivity analysis with respect to patient head-size and head-position for MRI coils.Thesis Supervisor: Luca DanielTitle: Emanuel E. Landsman Associate Professor of Electrical Engineering and Computer Science34Acknowledgments Automatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging Automatic Design Tool for Robust Radio Frequency Decoupling Matrices in Magnetic Resonance ImagingbyZohaib MahmoodSubmitted to the School of EngineeriGọi ngay
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