Essays about: "Lumen Segmentation"

Found 4 essays containing the words Lumen Segmentation.

  1. 1. Performance Evaluation of Lumen Segmentation in Ultrasound Images

    University essay from Umeå universitet/Institutionen för datavetenskap

    Author : Alexander Kadeby; [2023]
    Keywords : Image Segmentation; Atherosclerosis; VIPVIZA; Lumen Segmentation; Threshold Algorithms;

    Abstract : Automatic segmentation of the lumen of carotid arteries in ultrasound images is a starting step in providing preventive care for patients with atherosclerosis. To perform the segmentation this paper introduces a model utilizing a threshold algorithm. READ MORE

  3. 2. Geometry dependency of cerebral arterial pressure, and estimation of wall shear stress in patients with carotid stenosis: a CFD approach

    University essay from Umeå universitet/Institutionen för fysik

    Author : Josef Odevik; [2020]
    Keywords : Carotid stenosis; Geometry dependency; Arterial pressure; Atherosclerosis; Wall shear stress; Computational fluid dynamics; Karotid stenos; Geometriberoende; Artärtryck; Åderförkalkning; Skjuvkraft; Numeriska flödesberäkningar;

    Abstract : This thesis have investigated how the cerebral arterial pressure can be estimated using computational fluid dynamics (CFD). Specifically, a sensitivity study of how the blood vessel diameter affects the arterial pressure in patients with carotid stenosis, has been conducted. READ MORE

  4. 3. Image Analysis on Wood Fiber Cross-Section Images

    University essay from Institutionen för informationsteknologi

    Author : Sitao Feng; [2011]
    Keywords : ;

    Abstract : Lignification of wood fibers has a significant impact on wood properties. To measure the distribution of lignin in compression wood fiber cross-section images, a crisp segmentation method had been developed. It segments the lumen, the normally lignified cell wall and the highly lignified cell wall of each fiber. READ MORE

  5. 4. Segmentation of Carotid Arteries from 3D and 4D Ultrasound Images

    University essay from Bildbehandling; Tekniska högskolan

    Author : Per Mattsson; Andreas Eriksson; [2002]
    Keywords : Technology; Stroke; Carotid arteries; 3D Ultrasound; Adaptive Filtering; Segmentation; Edge Detection; Monga-Deriche-Canny; Seeded Region Growing; Inflatable Balloon Model; Finite Element Method; Triangulation; 4D wall motion; 3D compliance; TEKNIKVETENSKAP;

    Abstract : This thesis presents a 3D semi-automatic segmentation technique for extracting the lumen surface of the Carotid arteries including the bifurcation from 3D and 4D ultrasound examinations. Ultrasound images are inherently noisy. READ MORE