https://www.researchgate.net/publication/264041185_The_visualization_method_to_evaluate_the_performance_of_an_RF_coil_array_for_MRI (Any fulltext)
Perez Rodas, M., Hernandez, D., Kim, D., Park, Y., Cho, M., & Lee, S. (2013). The visualization method to evaluate the performance of an RF coil array for MRI. Institute of Electronics Engineers of Korea, 2013(7), 1111-1114.