Convolutional Neural Networks (CNNs) have currently acquired focus from researchers to address computer vision and medical image processing problems. Popular though they may be, most methods can only handle 2D pictures, but in medical liver tumor segmentation 3D volumes are normally analyzed in clinical data. Here, we offer a technique for segmenting 3D images using a fully convolutional neural network that has been trained on volumetric data. Our CNN is taught to predict segmentation for the entire volume simultaneously after being trained from scratch on prostate Magnetic Resonance Imaging (MRI) data. Liver cancer is second among male cancers in terms of mortality and sixth among female cancers in terms of mortality. Diagnosing, treating and assessing the efficacy of liver cancer all rely on accurate segmentation of hepatic lesions. As a standardized benchmark, LiTS (Liver Tumor Segmentation Challenge) allows researchers to evaluate and compare several automated liver lesion segmentation approaches. Computed tomography (CT) allows for early diagnosis, which is key to a high recovery rate. However, manually reviewing CT slices for thousands or millions of patients is difficult, tiring, costly, time-consuming, and prone to mistakes. Thus, we need a trustworthy, easy, and precise approach to automating this procedure. This work contains convolutional neural networks (CNNs) to solve all those problems; specifically, a trained RA-UNet(or) Res U-Net model using the 3D-IRCADb01 dataset, which includes CT slices from patients and masks for liver, tumors, and other organs. RA-UNet model combines the U-Net and ResNet models, instead of using convolutional blocks, it employs Residual blocks A second CNN was trained to segment the tumours based on the output of the first CNN after a first Cascaded Convolutional Neural Network (CNN) was used to segment the liver and extract the ROI. The dice coefficient was 95%, while the True Value Accuracy was 99%.
Keywords : Liver, Computed Tomography, Segmentation, Tumor Extraction, U-Net, Residual Learning.
Authors : P. GANGADHARA REDDY
Title : CT Liver Tumor Segmentation using a Hybrid Deep Convolutional Neural Network RA-UNet
Volume/Issue : 2024;6(3 (May - June))
Page No : 1 - 10