Comparison With the State-of-the-Art Methods on the Brain Tumor Dataset. The Dice Ratio and ASD of the Whole Tumor (WT), Tumor Core (TC) and Enhancing Tumor (ET) Are Reported. The High-Resolution Pathway Was Placed on the Second (Proposed-L2) and the Third Stage (Proposed-L3) to Find a Good Balance Between Semantic Resolution and Network Complexity. The Boldface Results Indicate no Significant Difference From the Best Result (p-Value <0.05 in Student’s t-Test). The Parameter Number (Param) of Each Network Is Also Reported