An accurate segmentation of white matter, gray matter and cerebrospinal fluid CSF in MR images of the brain is the key to understanding important brain diseases. It presents a new system for segmentation of MR images of the brain, based on a novel modification of the watershed transform. Their proposed...
This paper provides a generic algorithm for the segmentation of three dimensional multi-spectral magnetic resonance images. The algorithm is unsupervised and adaptive, does not require initialization, classifies the data in any number of tissue classes and suggests an optimal number of classes. It uses a statistical model including Bayesian distributions...
Fast, reliable segmentation of the abdominal aorta from three dimensional ultrasound remains a difficult problem. Standard methods based on local information like thresholding, region growing or active contours fail in separating the arteries from the veins and suffer from the lack of homogeneity of the vessel intensity and from the...
A framework is proposed for the segmentation of brain tumors from MRI. Instead of training on pathology, the proposed method trains exclusively on healthy tissue. The algorithm attempts to recognize deviations from normalcy in order to compute a fitness map over the image associated with the presence of pathology. The...
The validity of segmentation is an important issue in image processing because it has a direct impact on surgical planning. Binary manual segmentation is not only time-consuming but also lacks the ability of differentiating subtle intensity variations among voxels, particularly for those on the border of a tumor and for...
Characterizing the performance of image segmentation approaches has been a persistent challenge. Performance analysis is important since segmentation algorithms often have limited accuracy and precision. Interactive drawing of the desired segmentation by domain experts has often been the only acceptable approach, and yet suffers from intra-expert and inter-expert variability. Automated...
The purpose of this paper is to assess the reproducibility and accuracy compared to radiologists of three automated segmentation pipelines for quantitative magnetic resonance imaging MRI measurement of brain white matter signal abnormalities WMSA. The addition of TDS to the EM segmentation and PVEC algorithms significantly improved the accuracy of...
This paper introduces the use of spatially adaptive components into the geodesic active contour segmentation method for application to volumetric medical images. These components are derived from local structure descriptors and are used both in regularization of the segmentation and in stabilization of the image-based vector field which attracts the...
This paper discusses about the goal to improve image guidance during minimally invasive image guided therapy by developing an intraoperative segmentation and nonrigid registration algorithm. The algorithm was designed to allow for improved navigation and quantitative monitoring of treatment progress in order to reduce the time required in the operating...
A novel method of incorporating shape information into the image segmentation process is presented. This paper introduces a representation for deformable shapes and defines a probability distribution over the variances of a set of training shapes. The segmentation process embeds an initial curve as the zero level set of a...
May 29: Essential gynecology for the nongynecologist. Bermuda. (14 credits: P) Sponsor: Harvard Medical School. Contact Registrar: 617-384-8600. Jun. 9-16: Foundations of acute and chronic prescribing. Montreal, Quebec. (6 credits: E) Sponsor: Canadian Academy of Homeopathy. Contact Lisa Samet: 514-279-6629. Jun. 10: Basic curriculum in occupational...
Student teams from New Jersey universities placed among the top three finishers in the Federal Reserve Bank of New York's annual College Fed Challenge. Rutgers University finished second, Seton Hall's Stillman School of Business place third and SUNY Geneseo took first place in the regional finals of the competition held...
THOMAS Davenport contends we do a pretty lousy job of managing our most knowledgeable employees. The Babson College management professor studied 600 knowledge workers at 100 companies and found most are managed using an outdated approach developed during the Industrial Revolution. In Thinking for a Living (Harvard Business School Press,...
WHEN JESUS CAME TO HARVARD: MAKING MORAL CHOICES TODAY By HARVEY Cox Houghton Mifflin. 338 pp. $26. WHEN THE HIGHER Education Research Institute at U.C.L.A. recently released a study of religious and spiritual attitudes among today's college students, their findings confirmed what astute...
College/university foodservice is not what it used to be. Today's students don't have much to complain about when it comes to food. There is no more "mystery meat" and students can get almost anything they want and then some. Students don't decide to...
Three-quarters of Americans are underrepresented in the demographic breakdown of the student bodies of the nation's elite universities. Some groups of the American population are severely underrepresented in the student bodies and faculties of the nation's elite universities. This hardly is news. That fact has been heard from...
An update to practice guidelines on the management of unstable angina and a related form of heart attack known as non-ST-segment elevation myocardial infarction has been released by the Bethesda, MD-based American College of Cardiology and the Dallas-based American Heart Association. The new guidelines update a previous version released a...
With increasing dismay, I've been following the controversy about the anti-reparations ad that conservative author David Horowitz tried to place in campus newspapers around the country. The ad, "Ten Reasons Why Reparations for Slavery Is a Bad Idea and Racist Too," has prompted wrongheaded exercises in censorship by...
New York -- As the worlds financial markets continue their rapid roller-coaster ride over the hills of the bulls and through the valleys of the bears, it becomes increasingly important that the nations business school faculty stay attuned to the changes in the business world. And according...
Articles 1999-02-04
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