LIU-NET: lightweight Inception U-Net for efficient brain tumor segmentation from multimodal 3D MRI images. - Gul e Sehar Shahid; Jameel Ahmad; Chaudary Atif Raza Warraich; Amel Ksibi; Shrooq Alsenan; Arfan Arshad; Rehan Raza; Zaffar Ahmed Shaikh (PeerJ Comput. Sci., 2025)