Before revision:  To overcome these issues we proposea two-phase strategy for training native 3D CNN models on sparse 2Dannotations where missing labels are inferred by a 2D CNN model andcombined with manual annotations in a weighted manner during losscalculation .
After revision:  To overcome these issues we propose a two-phase strategy for training native 3D CNN models on sparse 2Dannotations where missing labels are inferred by a 2D CNN model andcombined with manual annotations in a weighted manner during losscalculation .