J. Medical Imaging Health Informatics最新文献

{"title":"Making Semi-Automatic Segmentation Method to be Automatic Using Deep Learning for Biventricular Segmentation","authors":"S. C. Kushbu, T. Inbamalar","doi":"10.1166/jmihi.2022.3927","DOIUrl":"https://doi.org/10.1166/jmihi.2022.3927","url":null,"abstract":"Ventricular Segmentation or Delineation of Cardiac Magnetic Resonance Imaging (CMRI) is significant in obtaining the cardiac contractile function, which in turn is taken as input for diagnosing Cardio Vascular Diseases (CVD). Many automatic and semi-automatic methods were evolved to\u0000 meet the constraints of diagnosing CVDs. Among these, semi-automatic methods require user intervention for delineation of ventricles, which consumes time and leads to intra and inter-observability, as with manual delineation. Thus, the automatic method is suggested by most of the researchers\u0000 to address the above-stated problem. We proposed Saliency-based Active contour U-Net (SACU-Net) for automatic bi-ventricular segmentation which is found to surpass the existing highest developed methods regarding closeness to the gold standard. Three schemes are used by our proposed algorithm,\u0000 namely 1. Saliency Detection Scheme for Region of Interest (ROI) Localization to concentrate only on Object of Interest, 2. Drop-out embedded U-net for Initial Contour evolution that performs initial segmentation and 3. Local-Global-based Regional active Contour (LGRAC) to fine-tune and avoid\u0000 leaking, merging of ventricles during Delineation. We used three datasets namely Automatic Cardiac Diagnosing Challenge (ACDC) of MICCAI 2017, Right Ventricular Segmentation Challenge (RVSC) of MICCAI 2012, and Sunny Brook (SB) of MICCAI 2009 dataset to test the adaptability nature of our\u0000 algorithm over different scanner resolutions and protocols. 100 and 50 CMRI Images of ACDC were used for training and testing respectively which obtained average Dice Coefficient (DC) metric of 0.963, 0.934, and 0.948 for Left Ventricular Cavity (LVC), Left Ventricular Myocardium (LVM), and\u0000 Right Ventricular Cavity (RVC) respectively. 32 and 16 CMRI Images of RVSC are used for preparing and experimenting respectively, which obtained an average DC metric of 0.95 for RVC.30 and 15 CMRI Images of SB are used for preparing and experimenting respectively, which obtained average DC\u0000 metric of 0.96 and 0.97 for LVC and LVM, respectively. Hausdorff Distance (HD) Metrics are also calculated to learn the distance of proposed delineated ventricles to reach the gold standard. The above resultant metrics show the robustness of our proposed SACU-Net in the segmentation of ventricles\u0000 of CMRI than previous methods.","PeriodicalId":393031,"journal":{"name":"J. Medical Imaging Health Informatics","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121075483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A New Type I Half-Logistic Inverse Weibull Distribution with an Application to the Relief Times Data of Patients Receiving an Analgesic","authors":"A. Elhassanein","doi":"10.1166/jmihi.2022.3937","DOIUrl":"https://doi.org/10.1166/jmihi.2022.3937","url":null,"abstract":"This article presents a new extension of the type I half-logistic inverse Weibull distribution. It is used as a base line to construct a new bivariate model that is called bivariate extended type I half-logistic inverse Weibull model. Statistical properties of the proposed distributions\u0000 are derived in explicit forms. Maximum likelihood estimators are discussed. Simulation is employed to discuss theoretical properties, to investigate the performance of the new models and to elaborate the goodness of fit. The new models are applied to real data sets.","PeriodicalId":393031,"journal":{"name":"J. Medical Imaging Health Informatics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130868259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application Value of CT Perfusion Imaging in Patients with Posterior Circulation Hyperacute Cerebral Infarction","authors":"Le-Jun Fu, Bi-Bo Zhao, Tian-hao Yang, Chunshun Yu","doi":"10.1166/jmihi.2022.3707","DOIUrl":"https://doi.org/10.1166/jmihi.2022.3707","url":null,"abstract":"Objectives: This study aims to evaluate the application value of computed tomography perfusion (CTP) imaging in patients with posterior circulation cerebral infarction in the hyperacute phase. Methods: The changes in CTP parameters, such as time to peak (TTP), mean transfer\u0000 time (MTT), cerebral blood flow (CBF) and the cerebral blood volume (CBV) of ischemic region, as well as the ischemic penumbra, infarction core at the affected side and normal brain tissue at the uninjured side, of 168 patients with suspected posterior circulation acute ischemic stroke were\u0000 analyzed. The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of each parameter map of CTP in displaying the cerebral infarction size in each part of the posterior circulation were evaluated. Results: The CTP results revealed that CBF and\u0000 CBV in the infarction area significantly decreased, and MTT and TTP in the blood supply area of cerebellum, thalamus and posterior cerebral artery (PCA) were significantly delayed. These were statistically different from those in the surrounding penumbra and normal brain tissue (P <\u0000 0.05). Furthermore, the CBF of the penumbra in each part slightly decreased, and the delay of MTT and TTP was statistically different from that in normal brains (P < 0.05). The CBV of the penumbra in the pons, midbrain and thalamus decreased, which was statistically different from\u0000 that in normal brain tissue and simple cerebral ischemia tissue (P < 0.05). The changes in CBF and MTT of the simple cerebral ischemia in each part, and TTP, except for the cerebellum, were statistically different from those of cerebral infarction and normal brain tissue (P\u0000 < 0.05). The total sensitivity, specificity and accuracy for the posterior circulation cerebral infarction was 77.2%, 98.6% and 94.9%, respectively, according to the CTP evaluation. Conclusion: The CTP parameter map can reflect the difference between an ischemic penumbra and an infraction\u0000 core in the posterior circulation. It has high sensitivity, specificity and accuracy in the CTP evaluation of posterior circulation cerebral infarctions.","PeriodicalId":393031,"journal":{"name":"J. Medical Imaging Health Informatics","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114877363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Utility of Simulink Subsystems in Handling and Processing of Biomedical Signals and Images","authors":"Qiufang Ma, C. Manikandan, Elamaran Vellaiappan, M. Thilagaraj","doi":"10.1166/jmihi.2022.3734","DOIUrl":"https://doi.org/10.1166/jmihi.2022.3734","url":null,"abstract":"To model, simulate, and analyze multi-domain dynamical systems, Simulink, which is a Matlab-based graphical programming environment, can be used effectively. Due to the drag-drop facility, accessible graphic user interface components, and zero coding environments, Simulink becomes the\u0000 most used tool both in industry and academia. The design cycle time of any real-time systems can be reduced using Simulink than other software tools. This article focuses mainly on the utility behind the subsystems such as enabled subsystem, triggered subsystem, triggered and enabled subsystem,\u0000 and control flow subsystem in biomedical signal and image processing. Image segmentation using enabled subsystem, voiced/unvoiced classification using triggered subsystem, and the computation of root-mean-square (RMS) amplitude using If Action subsystem are implemented using breast cancer\u0000 image and human voice signal. The Matlab 9.4 tool is used for experimental simulation with the biomedical signals and images.","PeriodicalId":393031,"journal":{"name":"J. Medical Imaging Health Informatics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131250824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-Class Brain Disease Classification Using Modified Pre-Trained Convolutional Neural Networks Model with Substantial Data Augmentation","authors":"I. Nandhini, D. Manjula, V. Sugumaran","doi":"10.1166/jmihi.2022.3936","DOIUrl":"https://doi.org/10.1166/jmihi.2022.3936","url":null,"abstract":"The integration of various algorithms in the medical field to diagnose brain disorders is significant. Generally, Computed Tomography, Magnetic Resonance Imaging techniques have been used to diagnose brain images. Subsequently, segmentation and classification of brain disease remain\u0000 an exigent task in medical image processing. This paper presents an extended model for brain image classification based on a Modified pre-trained convolutional neural network model with extensive data augmentation. The proposed system has been efficiently trained using the technique of substantial\u0000 data augmentation in the pre-processing stage. In the first phase, the pre-trained models namely AlexNet, VGGNet-19, and ResNet-50 are employed to classify the brain disease. In the second phase, the idea of integrating the existing pre-trained model with a multiclass linear support vector\u0000 machine is incorporated. Hence, the SoftMax layer of pre-trained models is replaced with a multi class linear support vector machine classifier is proposed. These proposed modified pre-trained model is employed to classify brain images as normal, inflammatory, degenerative, neoplastic and\u0000 cerebrovascular diseases. The training loss, mean square error, and classification accuracy have been improved through the concept of Cyclic Learning rate. The appropriateness of transfer learning has been demonstrated by applying three convolutional neural network models, namely, AlexNet,\u0000 VGGNet-19, and ResNet-50. It has been observed that the modified pre-trained models achieved a higher classification rate of accuracies of 93.45% when compared with a finetuned pre-trained model of 89.65%. The best classification accuracy of 92.11%, 92.83% and 93.45% has been attained in the\u0000 proposed method of the modified pre-trained model. A comparison of the proposed model with other pre-trained models is also presented.","PeriodicalId":393031,"journal":{"name":"J. Medical Imaging Health Informatics","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124966384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Novel Approach for Identification of Biomakers in Diabetic Retinopathy Recognition","authors":"P. Rayavel, C. Murukesh","doi":"10.1166/jmihi.2022.3934","DOIUrl":"https://doi.org/10.1166/jmihi.2022.3934","url":null,"abstract":"In the emergence of anti-Antivascular endothelial growth factor (VEGF) drugs such as ranibizumab and bevacizumab, it has become obvious that the presence of outer retinal and subretinal fluid is the primary signal of the need for anti-VEGF therapy, and used to identify disease activity\u0000 and assist diabetic retinopathy treatment. Despite advancements in diabetic retinopathy (DR) treatments, early detection is critical for DR management and remains a significant barrier. Clinical DR can be distinguished from non proliferative DR without visible vision loss and vision-threatening\u0000 consequences such as macular edoema and proliferative retinopathy by retinal alterations in diabetes. The proposed method aggrandize the process of accurate detection of biomakers responsible for higher risk of diabetic retinopathy development in color fundus images. Furthermore, the proposed\u0000 approach could be employed to quantify these lesions and their distributions efficientively as evident in the experimentation results.","PeriodicalId":393031,"journal":{"name":"J. Medical Imaging Health Informatics","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127311597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Convolutional Neural Networks Based Classifier for Diabetic Retinopathy","authors":"A. K. Kumar, A. Udhayakumar, K. Kalaiselvi","doi":"10.1166/jmihi.2022.3932","DOIUrl":"https://doi.org/10.1166/jmihi.2022.3932","url":null,"abstract":"Diabetic Retinopathy (DR) is a consequence of diabetes which causes damage to the retinal blood vessel networks. In most diabetics, this is a major vision-threatening problem. Color fundus pictures are used to diagnose DR, which requires competent doctors to determine lesions presence.\u0000 The job of detecting DR in an automated manner is difficult. In terms of automated illness identification, feature extraction is quite useful. In the current setting, Convolutional Neural Networks (CNN) outperforms prior handcrafted feature-based image classification approaches in terms of\u0000 image classification efficiency. This paper introduces CNN structure for extracting characteristics from retinal fundus pictures in order to develop the accuracy of classification. This proposed method, the output features of CNN are employed as input to many classifiers of machine learning.\u0000 Using images from the MESSIDOR datasets, this method is tested under Random Tree, Hoeffiding Tree and Random Forest classifiers. Accuracy, False Positive Rate (FPR), Precision, Recall, F-1 score, specificity and Kappa-score for used classifiers are compared to find out the efficiency of the\u0000 classifier. For the MESSIDOR datasets, the suggested feature extraction approach combined with the Random forest classifier surpasses all other classifiers which gains 88% and 0.7288 of average accuracy and Kappa-score (k-score) respectively.","PeriodicalId":393031,"journal":{"name":"J. Medical Imaging Health Informatics","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127876599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Operative Acute Brain Tumor Recognition by Jointure Inward Unswerving Probabilistic Neural Network Classifier","authors":"V. Anitha","doi":"10.1166/jmihi.2022.3935","DOIUrl":"https://doi.org/10.1166/jmihi.2022.3935","url":null,"abstract":"Brain tumors have to be predicted earlier to avoid the risk of being mortal. For an effective detection an adaptive segmentation with two-tier tumors region extraction is needed. This framework offers preprocessing to avoid noise occurrence by fusing median and wiener filter also utilizes\u0000 adaptive pillar C-means algorithm for obtaining the essential feature set thus the processing time is reduced. Thus the attained essential feature sets are then classified by means of unswerving PNN (Probabilistic Neural network) classifier where classification is done twice initially to classify\u0000 whether benign or malignant, Sub sequently to classify different sorts of brain tumor such as Astrocytoma, Meningioma, Glioblastoma and Medulloblastoma. Since the non-linearity of PNN due to distance factor consumes more computation time which is tackled by intruding the radial basis function\u0000 resulted in LS-SVM (Least Square-Support Vector Machine) as a distance factor which is linear one. Thus computation time is further reduced.","PeriodicalId":393031,"journal":{"name":"J. Medical Imaging Health Informatics","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115093533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improved Wavelet Filter Bank Selection for Effective Feature Extraction in Alzheimer Classification","authors":"M. Revathi, G. Singaravel","doi":"10.1166/jmihi.2022.3845","DOIUrl":"https://doi.org/10.1166/jmihi.2022.3845","url":null,"abstract":"Background: Alzheimer’s disease (AD) is the primary reason for health problem. Motivation: Being degenerative and progressive with brain cells that can be intervened by health professionals in case of early recognition. Feature extraction is a technique employed\u0000 for reduction of dimensionality. The features are generated for a image. The extraction of features has to be done accurately without any loss of information. Methods: In this work, a Cuckoo Search (CS) based Wavelet Filter Bank Selection algorithm for classification of Alzheimer’s\u0000 has been proposed. The Ada Boost classifier, Random Forest (RF), and Classification and Regression Tree (CART) were used for the identification of the affected patient with Magnetic Resonance Imaging (MRI). Results: From results it can be found that proposed CS-based technique is used\u0000 in classifying AD compared to conventional techniques.","PeriodicalId":393031,"journal":{"name":"J. Medical Imaging Health Informatics","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122764314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Effective Framework for the Classification of Retinopathy Grade and Risk of Macular Edema for Diabetic Retinopathy Images","authors":"B. Balasuganya, A. Chinnasamy, D. Sheela","doi":"10.1166/jmihi.2022.3933","DOIUrl":"https://doi.org/10.1166/jmihi.2022.3933","url":null,"abstract":"It is well know that for a diabetic patient, Diabetic Retinopathy (DR) is a speedy spreading infection which results in total loss of vision. Hence for diabetic patient, prior DR identification is important issue to protect eyes furthermore supportive for opportune treatment. The DR\u0000 identification should be possible physically and could likewise distinguished consequently. In previous framework, assessment of fundus pictures of retina for checking the phonological variety in Micro Aneurysms (MA), exudates, hemorrhages, macula and veins is a drawn-out and lavish errand.\u0000 However in the robotized framework, picture handling strategies can be utilized for before DR identification. Here, a framework for DR discovery is proposed. To start with, the information picture is pre-prepared utilizing crossover CLAHE and circular average filter round normal channel and\u0000 veins are extricated by Coye Filter. A short time later, picture is exposed to irregularities division, where division of MA, hemorrhages, exudates, and neovascularization are conveyed. Almost 36 distinct highlights are removed from sectioned pictures. A half breed salp swarm-feline multitude\u0000 advancement (CSO) calculation is used for choosing the appropriate highlights. At last, an arrangement is conveyed by changed RNN-LSTM. Three orders are conveyed, (I) Classification of kind of retinopathy, (ii) Classification of evaluation of retinopathy, (iii) Risk of Macular Edema (ME).\u0000 The order correctness’s got are: 99.73% for kind of DR, 95.6% for NPDR grade and 99.4% for NPDR Macular Edema Risk, 92.3% for PDR Macular Edema Risk. Our simulation results reveals that with Decision Tree (DT) and Random Forest (RF) Algorithm, this framework provides better results in\u0000 terms of accuracy of affectability and explicitness and Precision.","PeriodicalId":393031,"journal":{"name":"J. Medical Imaging Health Informatics","volume":"83 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130026853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}