Reconfigurable multi‐channel RF crossbar switch matrix for MRI receiver front‐end. Issue 6 (1st March 2017)

• Record Type: Journal Article
• Authors: Lee, H.L.
• Is Part Of: Electronics letters. Volume 53:Issue 6(2017)
• Page Start: 380
• Page End: 381
• Publication Date: 2017-03-01
• Subjects: matrix algebra -- radio receivers -- wireless channels -- inductors -- image enhancement -- biomedical MRI -- medical image processing; reconfigurable multichannel RF crossbar switch matrix -- MRI receiver front‐end -- reconfigurable crossbar transmission line switch matrix -- magnetic resonance imaging system -- signal loss‐compensation circuitry -- inductor bank -- signal‐to‐noise ratio -- SNR enhancement -- RF path loss -- phantom test image quality -- magnetic flux density 4 tesla -- frequency 170 MHz; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2016.4489
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : In this Letter, a highly reconfigurable crossbar transmission line switch matrix for magnetic resonance imaging (MRI) system is proposed. Unlike the conventional M × N crossbar switch configuration, the proposed structure can manipulate 2 M × N matrix without doubling the area occupancy. Also, the proposed structure includes the signal loss‐compensation circuitry based on inductor banks to enhance signal‐to‐noise ratio (SNR). Thus, for any required numbers of input and output channels, the proposed structure can reduce the overall size, the number of required component, and even increase the quality of MR images by SNR enhancement. The proposed structure was implemented and verified at 4‐Tesla (170 MHz) MR system through the comparison of RF path loss, SNR and phantom test image qualities.