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Abstract #1905

Design and Optimization of Asymmetrical Tapered RF Solenoid Tx / Rx Coil for Halbach-Array based Low-field MRI Scanner

Meena Rajendran1 and Shao Ying Huang1
1Singapore University of Technology, Singapore, Singapore


The optimization of an asymmetrical tapered solenoid coil using multi-objective Genetic Algorithm is presented to achieve high sensitivity, high homogeneity, low inductance simultaneously at 2.84MHz within a cylindrical volume(95×95х10mm). The asymmetrical solenoid coil has a lower half that consists of turns with variable pitches and a constant radius and an upper half that consist of turns with variable pitches and profile curvature(variable radius). Two coil winding patterns are included: single winding and multiple windings at each groove. The optimal design shows a sensitivity of 138 μT/√W (29.7%increase), 3.8% homogeneity reduction, comparable inductance compared to a traditional solenoid of similar dimensions.

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