关键词: 图像重建, 磁共振成像, 噪声均衡, 射频接收机, Y因子法

Abstract: The configuration of multiple radiofrequency receivers is becoming more and more popular on magnetic resonance imaging (MRI) systems nowadays. One problem associated with multiplereceiver MRI is that the noise levels may differ among different receiver channels, affecting the homogeneousness of the reconstructed images. In the paper, a noise homogenization method for multiplereceiver MRI is proposed. In the method, the scaling factor for each receiver channel is adjusted according to the noise level in the channel measured by a modified Y factor method. The performance of the proposed method was evaluated experimentally.

Key words: MRI, image reconstruction, noise homogenization, multiple receivers, Y factor method