Search for dissertations about: "medial axis"

Showing result 1 - 5 of 7 swedish dissertations containing the words medial axis.

2. 1. Towards Intelligent Deformable Models for Medical Image Analysis

   Author : Ghassan Hamarneh; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; shape modeling; deformable models; principal component analysis; echocardiography; snakes; active shape models; deformable spatio-temporal shape models; medial-based shape profiles; statistical shape variation; spatio-temporal shape analysis; magnetic resonance imaging; hierarchical regional principal component analysis; oral lesions; dynamic programming; segmentation; spring-mass model; shape deformation; optical flow; medical image analysis; artificial life; physics-based modeling; deformable organisms; digital color images; medial axis; active contour models;

   Abstract : Medical imaging continues to permeate the practice of medicine, but automated yet accurate segmentation and labeling of anatomical structures continues to be a major obstacle to computerized medical image analysis (MIA). Deformable models, with its profound roots in estimation theory, optimization, and physics-based dynamical systems, represent a powerful approach to the general problem of medical image segmentation. READ MORE

4. 2. Studies of cytokine mediated regulation of central nervous functions : role of prostaglandins

   Author : Monica Ek; Karolinska Institutet; Karolinska Institutet; []
   Keywords : interleukin-1; prostaglandin E2; central nervous system; HPA axis; fever; vagus nerve;

   Abstract : The communication between the immune system and the central nervous system (CNS) results in an array of centrally regulated illness responses, including fever and increased hypothalamus-pituitary-adrenal (HPA) axis activity. The mechanisms by which the immune system signals the brain across the blood-brain barrier have not been completely elucidated, but proinflammatory cytokines, like interleukin-1 (IL-1), are believed to act as important mediators. READ MORE

5. 3. Data-driven and real-time prediction models for iterative and simulation-driven design processes

   Author : Mohammad Arjomandi Rad; Joel Johansson; Fredrik Elgh; Alessandro Bertoni; Jönköping University; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Development lead time; Iterative design; Simulation-driven design; Design automation; Data-driven design; Artificial Intelligence;

   Abstract : The development of more complex products has increased dependency on virtual/digital models and emphasized the role of simulations as a means of validation before production. This level of dependency on digital models and simulation togetherwith the customization level and continuous requirement change leads to a large number of iterations in each stage of the product development process. READ MORE

6. 4. Structural properties of the mastoid using image analysis and visualization

   Author : Olivier Cros; Michael Gaihede; Hans Knutsson; Bernard Ars; Linköpings universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

   Abstract : The mastoid, located in the temporal bone, houses an air cell system whose cells have a variation in size that can go far below current conventional clinical CT scanner resolution. Therefore, the mastoid air cell system is only partially represented in a CT scan. READ MORE

7. 5. Elbow kinematics : studies of the elbow joint under normal conditions and after joint replacement

   Author : Anne Ericson; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Background: Total elbow arthroplasty (TEA) is used for treatment of patients with severe pain and disability due to reumatoid arthritis. Long term results are not as good as for hip and knee replacements. READ MORE