Accurate Noise Level and Noise Covariance Matrix Assessment in Phased Array Coil Without a Noise Scan

Yu Ding¹, Yiu-Cho Chung², Orlando P. Simonetti¹

In this study, we propose an novel method to assess noise level and noise covariance matrix in the k-space data when both signal and noise are present. Experimental results show that the noise level as well as the noise covariance matrix can be accurately derived from multi-frame k-space data without deploying a separate noise scan.