Journal ArticleDOI
Current methods in medical image segmentation.
TLDR
A critical appraisal of the current status of semi-automated and automated methods for the segmentation of anatomical medical images is presented, with an emphasis on the advantages and disadvantages of these methods for medical imaging applications.Abstract:
▪ Abstract Image segmentation plays a crucial role in many medical-imaging applications, by automating or facilitating the delineation of anatomical structures and other regions of interest. We present a critical appraisal of the current status of semiautomated and automated methods for the segmentation of anatomical medical images. Terminology and important issues in image segmentation are first presented. Current segmentation approaches are then reviewed with an emphasis on the advantages and disadvantages of these methods for medical imaging applications. We conclude with a discussion on the future of image segmentation methods in biomedical research.read more
Citations
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Journal ArticleDOI
Modelling cardiac calcium sparks in a three-dimensional reconstruction of a calcium release unit
Johan Hake,Johan Hake,Andrew G. Edwards,Zeyun Yu,Peter M. Kekenes-Huskey,Anushka Michailova,J. Andrew McCammon,Michael Holst,Masahiko Hoshijima,Andrew D. McCulloch +9 more
TL;DR: A detailed computational model of a cardiac Ca2+ spark is developed based on a three dimensional reconstruction of electron tomograms that predicts near total junctionalCa2+ depletion after the spark, while regional Ca2- reserve is preserved.
Patent
Tracking system using field mapping
Doron Harlev,Eldar Rotem +1 more
TL;DR: In this paper, a method for securing multiple sets of current injecting electrodes to an organ in a patient's body in order to generate a field in the organ, in response to current flow caused by the multiple sets, is described.
Segmentation of the Brain from MR Images
TL;DR: This thesis project consists of finding a method to extract brain tissues from T1-weighted MR images of the head using the expectation-maximization algorithm and it corrects for intensity inhomogeneities.
Journal ArticleDOI
Oriented Active Shape Models
Jiamin Liu,Jayaram K. Udupa +1 more
TL;DR: A novel strategy called oriented active shape models (OASM) is presented in an attempt to overcome the following five limitations of ASM: lower delineation accuracy, the requirement of a large number of landmarks, sensitivity to search range, 4) sensitivity to initialization, and 5) inability to fully exploit the specific information present in the given image to be segmented.
Journal ArticleDOI
Automatic Human Brain Tumor Detection in MRI Image Using Template-Based K Means and Improved Fuzzy C Means Clustering Algorithm
Shahariar Alam,Mahbubur Rahman,Mohammad Amazad Hossain,Khairul Islam,Kazi Mowdud Ahmed,Khandaker Takdir Ahmed,Bikash Chandra Singh,Sipon Miah +7 more
TL;DR: Simulation results show that the proposed algorithm achieves better detection of abnormal and normal tissues in the human brain under small detachment of gray-level intensity and detects human brain tumors within a very short time—in seconds compared to minutes with other algorithms.
References
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Fuzzy sets
TL;DR: A separation theorem for convex fuzzy sets is proved without requiring that the fuzzy sets be disjoint.
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Neural Networks: A Comprehensive Foundation
TL;DR: Thorough, well-organized, and completely up to date, this book examines all the important aspects of this emerging technology, including the learning process, back-propagation learning, radial-basis function networks, self-organizing systems, modular networks, temporal processing and neurodynamics, and VLSI implementation of neural networks.
Journal ArticleDOI
Stochastic Relaxation, Gibbs Distributions, and the Bayesian Restoration of Images
Stuart Geman,Donald Geman +1 more
TL;DR: The analogy between images and statistical mechanics systems is made and the analogous operation under the posterior distribution yields the maximum a posteriori (MAP) estimate of the image given the degraded observations, creating a highly parallel ``relaxation'' algorithm for MAP estimation.
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Co-planar stereotaxic atlas of the human brain : 3-dimensional proportional system : an approach to cerebral imaging
TL;DR: Direct and Indirect Radiologic Localization Reference System: Basal Brain Line CA-CP Cerebral Structures in Three-Dimensional Space Practical Examples for the Use of the Atlas in Neuroradiologic Examinations Three- Dimensional Atlas of a Human Brain Nomenclature-Abbreviations Anatomic Index Conclusions.