نتایج جستجو برای: brain mri tissue segmentation

تعداد نتایج: 1442746  

2011
Albert Gubern-Mérida Michiel Kallenberg Robert Marti Nico Karssemeijer

Organ localization is an important topic in medical imaging in aid of cancer treatment and diagnosis. An example are the pharmacokinetic model calibration methods based on a reference tissue, where a pectoral muscle delineation in breast MRI is needed to detect malignancy signs. Atlas-based segmentation has been proven to be powerful in brain MRI. This is the first attempt to apply an atlas-bas...

Journal: :International journal of electrical & electronics research 2022

This paper is developed to implement a fuzzy set technique with intensity normalization intended for the identification of location and tumor shape from an MRI image. Normally, can be uncontrolled growth tissue in any portion body. Here, different kinds cancers have various conditions treatments. Hence, brain segmentation essential topic medical applications. The level utilized segment images. ...

2002
Nathan Moon Elizabeth Bullitt Koenraad Van Leemput Guido Gerig

Combining image segmentation based on statistical classification with a geometric prior has been shown to significantly increase robustness and reproducibility. Using a probabilistic geometric model of sought structures and image registration serves both initialization of probability density functions and definition of spatial constraints. A strong spatial prior, however, prevents segmentation ...

2013
Rachana Rana Annapurna Singh

Segmentation means segregating area of interest from the image. The aim of image segmentation is to cluster the pixels into salient image regions i.e. regions corresponding to individual surfaces, objects, or natural parts of objects. Automatic Brain tumour segmentation is a sensitive step in medical field. A significant medical informatics task is to perform the indexing of the patient databas...

Journal: :International journal of developmental neuroscience : the official journal of the International Society for Developmental Neuroscience 2011
Julia A Scott Piotr A Habas Kio Kim Vidya Rajagopalan Kia S Hamzelou James M Corbett-Detig A James Barkovich Orit A Glenn Colin Studholme

In the latter half of gestation (20-40 gestational weeks), human brain growth accelerates in conjunction with cortical folding and the deceleration of ventricular zone progenitor cell proliferation. These processes are reflected in changes in the volume of respective fetal tissue zones. Thus far, growth trajectories of the fetal tissue zones have been extracted primarily from 2D measurements on...

2017
Ashima Anand Harpreet Kaur H. D. Cheng Y. H. Chen B. N. Saha N. Ray J. Jiang Y. Wu M. Huang W. Yang W. F. Chen Ayse Demirhan Mustafa Toru

Segmentation of brain tumor is an example of medical image segmentation that has grown as an emerging area of research in magnetic resonance imaging(MRI). In biomedical imaging, accurate detection of tumor is utmost important for proper clinical practice and treatment. Several techniques have been proposed for brain tumor segmentation, but there is no perfect algorithm proposed yet to enhance t...

Journal: :Magnetic resonance imaging 2013
Ravi Bansal Xuejun Hao Feng Liu Dongrong Xu Jun Liu Bradley S Peterson

Water content is the dominant chemical compound in the brain and it is the primary determinant of tissue contrast in magnetic resonance (MR) images. Water content varies greatly between individuals, and it changes dramatically over time from birth through senescence of the human life span. We hypothesize that the effects that individual- and age-related variations in water content have on contr...

Image segmentation is an essential issue in image description and classification. Currently, in many real applications, segmentation is still mainly manual or strongly supervised by a human expert, which makes it irreproducible and deteriorating. Moreover, there are many uncertainties and vagueness in images, which crisp clustering and even Type-1 fuzzy clustering could not handle. Hence, Type-...

2014
Florent Segonne Bruce Fischl

Whole brain segmentation, referred to as skull stripping, is an important technique in neuroimaging. Many applications, such as presurgical planning, cortical surface reconstruction and brain morphometry, depend on the ability to accurately segment brain from non-brain tissue, i.e. remove extra-cerebral tissue such as skull, sclera, orbital fat, skin, etc. However, despite the clear definition ...

Journal: :Computer Vision and Image Understanding 2002
Su Ruan Bruno Moretti Mohamed-Jalal Fadili Daniel Bloyet

In this paper, we present a fuzzy Markovian method for brain tissue segmentation from magnetic resonance images. Generally, there are three main brain tissues in a brain dataset: gray matter, white matter, and cerebrospinal fluid. However, due to the limited resolution of the acquisition system, many voxels may be composed of multiple tissue types (partial volume effects). The proposed method a...

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