scholarly journals A Novel 2-Phase U-net Algorithm Combined with Optimal Mass Transportation for 3D Brain Tumor Detection and Segmentation

2022 ◽  
Author(s):  
Wen-Wei Lin ◽  
Jia-Wei Lin ◽  
Tsung-Ming Huang ◽  
Tiexiang Li ◽  
Mei-Heng Yueh ◽  
...  
Keyword(s):  
Brain Tumor ◽  
Histogram Equalization ◽  
Tumor Detection ◽  
Training Dataset ◽  
Mass Transportation ◽  
Two Phase ◽  
Brain Images ◽  
Brain Image ◽  
Imaging Research ◽  
Fluid Attenuated Inversion Recovery

Abstract Utilizing the optimal mass transportation (OMT) technique to convert an irregular 3D brain image into a cube, a required input format for the U-net algorithm, is a brand new idea for medical imaging research. We develop a cubic volume-measure-preserving OMT (V-OMT) model for the implementation of this conversion. The contrast-enhanced histogram equalization grayscale of fluid attenuated inversion recovery (FLAIR) in a brain image creates the corresponding density function. We then propose an effective two-phase U-net algorithm combined with the V-OMT algorithm for training and validation. First, we use the U-net and V-OMT algorithms to precisely predict the whole tumor (WT) region. Second, we expand this predicted WT region with dilation and create a smooth function by convoluting the step-like function associated with the WT region in the brain image with a 5×5×5 blur tensor. Then, a new V-OMT algorithm with mesh refinement is constructed to allow the U-net algorithm to effectively train Net1--Net3 models. Finally, we propose ensemble voting postprocessing to validate the final labels of brain images. We randomly choose 1000 and 251 brain samples from theBraTS 2021 training dataset, which contains 1251 samples, for training and validation, respectively. The Dice scores of the WT, tumor core (TC) and enhanced tumor (ET) regions for validation computed by Net1--Net3 were 0.93705, 0.90617 and 0.87470, respectively. A significant improvement in brain tumor detection and segmentation with higher accuracy is achieved.

scholarly journals Brain Tumor Detection using Enhanced Convolution Neural Network for MR Images

2021 ◽  
Vol 10 (2) ◽  
pp. 10-13
Author(s):  
M.B. Bramarambika ◽  
◽  
M Sesha Shayee ◽  
Keyword(s):  
Neural Network ◽  
Brain Tumor ◽  
Brain Tumors ◽  
Detection System ◽  
Human Life ◽  
Classification Problem ◽  
Tumor Detection ◽  
Convolution Neural Network ◽  
Brain Images ◽  
The Brain

Brain tumor is a mass that grows unevenly in the brain and directly affects human life. The mass occurs spontaneously because of the tissues surrounding the brain or the skull. There are two types of Brain tumor such as Benign and Malignant. Malignant brain tumors contain cancer cells and grow quickly and spread through to other brain and spine regions as well. Accurate and prompt diagnosis of brain tumors is essential for implementing an effective treatment of this disease. Brain images produced by the Magnetic Resonance Imaging (MRI) technique are a rich source of data for brain tumor diagnosis and treatment in the medical field. Due to the existence of a large number of features compared to the other imaging types. The performance of existing methods is inadequate considering the medical significance of the classification problem. Earlier methods relied on manually delineated tumor regions, prior to classification. This prevented them from being fully automated. The automatic algorithms developed using CNN and its variants could not achieve an influential improvement in performance. In order to overcome such an issue, the proposed one is automatic brain tumor detection system, which is “ Enhanced Convolution Neural Network (CNN) Algorithm for MRI Images” for the detection of brain tumor is useful to detect and classify the Glioma part into low Glioma and high Glioma.

scholarly journals Brain Tumor Detection and Segmentation using Histogram and Optimization Algorithm

2019 ◽  
Vol 8 (10S) ◽  
pp. 125-129
Keyword(s):  
Brain Tumor ◽  
Optimization Algorithm ◽  
Ground Truth ◽  
Tumor Detection ◽  
High Accuracy ◽  
Mathematical Foundation ◽  
Mr Images ◽  
Brain Image ◽  
Segmentation Technique ◽  
The Brain

In this research, an automated and customized neoplasm segmentation methodology is given and valid against ground truth applying simulated T1-weighted resonance pictures in twenty five subjects. a replacement intensity-based segmentation technique known as bar graph primarily based gravitational optimization algorithm is developed to segment the brain image into discriminative sections (segments) with high accuracy. whereas the mathematical foundation of this rule is given in details, the appliance of the projected rule within the segmentation of single T1-weighted pictures (T1-w) modality of healthy and lesion MR images is additionally given. The results show that the neoplasm lesion is divided from the detected lesion slice with eighty nine.6% accuracy..

scholarly journals Enhanced Region Growing for Brain Tumor MR Image Segmentation

2021 ◽  
Vol 7 (2) ◽  
pp. 22
Author(s):  
Erena Siyoum Biratu ◽  
Friedhelm Schwenker ◽  
Taye Girma Debelee ◽  
Samuel Rahimeto Kebede ◽  
Worku Gachena Negera ◽  
...  
Keyword(s):  
Deep Learning ◽  
Brain Tumor ◽  
State Of The Art ◽  
Learning Algorithms ◽  
Region Growing ◽  
Developed Countries ◽  
Brain Images ◽  
Seed Point ◽  
Brain Image ◽  
The Brain

A brain tumor is one of the foremost reasons for the rise in mortality among children and adults. A brain tumor is a mass of tissue that propagates out of control of the normal forces that regulate growth inside the brain. A brain tumor appears when one type of cell changes from its normal characteristics and grows and multiplies abnormally. The unusual growth of cells within the brain or inside the skull, which can be cancerous or non-cancerous has been the reason for the death of adults in developed countries and children in under developing countries like Ethiopia. The studies have shown that the region growing algorithm initializes the seed point either manually or semi-manually which as a result affects the segmentation result. However, in this paper, we proposed an enhanced region-growing algorithm for the automatic seed point initialization. The proposed approach’s performance was compared with the state-of-the-art deep learning algorithms using the common dataset, BRATS2015. In the proposed approach, we applied a thresholding technique to strip the skull from each input brain image. After the skull is stripped the brain image is divided into 8 blocks. Then, for each block, we computed the mean intensities and from which the five blocks with maximum mean intensities were selected out of the eight blocks. Next, the five maximum mean intensities were used as a seed point for the region growing algorithm separately and obtained five different regions of interest (ROIs) for each skull stripped input brain image. The five ROIs generated using the proposed approach were evaluated using dice similarity score (DSS), intersection over union (IoU), and accuracy (Acc) against the ground truth (GT), and the best region of interest is selected as a final ROI. Finally, the final ROI was compared with different state-of-the-art deep learning algorithms and region-based segmentation algorithms in terms of DSS. Our proposed approach was validated in three different experimental setups. In the first experimental setup where 15 randomly selected brain images were used for testing and achieved a DSS value of 0.89. In the second and third experimental setups, the proposed approach scored a DSS value of 0.90 and 0.80 for 12 randomly selected and 800 brain images respectively. The average DSS value for the three experimental setups was 0.86.

scholarly journals BRAIN TUMOR DETECTION USING BACKPROPAGATION NEURAL NETWORKS

2018 ◽  
Vol 3 (3) ◽  
pp. 83-88
Author(s):  
Iklas Sanubary
Keyword(s):  
Neural Networks ◽  
Brain Tumor ◽  
Correlation Coefficient ◽  
Correlation Energy ◽  
Tumor Detection ◽  
Training Data ◽  
Brain Images ◽  
Backpropagation Neural Networks ◽  
Occurrence Matrix

A study of brain tumor detection has been done by making use of backpropagation neural networks with Gray Level Co-Occurrence Matrix (GLCM) feature extraction. CT-Scan images of the brain consist of 12 normal and 13 abnormal (tumor) brain images are analyzed. The preprocessing stage begins with cropping the image to a 256 x 256 pixels picture, then converting the colored images into grayscale images, and equalizing the histogram to improve the quality of the images. GLCM is used to calculate statistical features determined by 5 parameters i.e., contrast, correlation, energy and homogeneity for each direction. In these backpropagation neural networks, the [12 2 1] architecture is used. The correlation coefficient between the target and the output for the training data is 0.999, while the correlation coefficient for the testing data is 0.959 with an accuracy of 70%. The results of this research indicate that backpropagation neural networks can be used for the detection of brain tumors.

scholarly journals Brain Tumor Detection and Segmentation Using Watershed Segmentation and Morphological Operation

2021 ◽  
pp. 304-312
Author(s):  
V. Supraja ◽  
Kuna Haritha ◽  
Gunjalli Mounika ◽  
Chintha Manideepika ◽  
Kandikeri Sai Jeevani
Keyword(s):  
Brain Tumor ◽  
Critical Role ◽  
Tumor Detection ◽  
Morphological Operation ◽  
Brain Image ◽  
Mri Brain ◽  
Skull Stripping ◽  
Tumor Region ◽  
The Brain ◽  
Mri Brain Image

In the field of medical image processing, detection of brain tumor from magnetic resonance image (MRI) brain scan has become one of the most active research. Detection of the tumor is the main objective of the system. Detection plays a critical role in biomedical imaging. In this paper, MRI brain image is used to tumor detection process. This system includes test the brain image process, image filtering, skull stripping, segmentation, morphological operation, calculation of the tumor area and determination of the tumor location. In this system, morphological operation of erosion algorithm is applied to detect the tumor. The detailed procedures are implemented using MATLAB. The proposed method extracts the tumor region accurately from the MRI brain image. The experimental results indicate that the proposed method efficiently detected the tumor region from the brain image. And then, the equation of the tumor region in this system is effectively applied in any shape of the tumor region.

scholarly journals Brain Tumor Detection from Multimodal MRI Brain Images using Pseudo Coloring Processes

2019 ◽  
Vol 165 ◽  
pp. 173-181
Author(s):  
T. Kalaiselvi ◽  
P. Kumarashankar ◽  
P. Sriramakrishnan ◽  
S. Karthigaiselvi
Keyword(s):  
Brain Tumor ◽  
Tumor Detection ◽  
Brain Images ◽  
Mri Brain ◽  
Multimodal Mri ◽  
Mri Brain Images
Sign in / Sign up

Export Citation Format

Share Document