Figure 5.
MB and non-MB images acquired in a healthy volunteer with different FOV reduction factors while varying resolution to maintain the same echo train length (ETL). By progressively reducing the effectively encoded FOV, it is possible to obtain progressively higher resolution images while maintaining the same level of off-resonance-induced distortion and blurring (cfr. close up view of right breast). At higher FOV reduction factors, non-MB images are non-diagnostic due to noise amplification effects. By using MB together with conventional parallel imaging reduces these effects, allowing higher undersampling factors than using parallel imaging alone.