Sökning: "ultrasound images"
Visar resultat 1 - 5 av 58 avhandlingar innehållade orden ultrasound images.
1. On perfusion estimation using ultrasound
Sammanfattning : This thesis has the main focus on ways to improve the blood perfusion estimate, as obtained from a continuous wave Doppler system. Earlier studies have shown large temporal variations in the detected perfusion estimate, due to speckle. LÄS MER
2. Toward increased applicability of ultrasound contrast agents
Sammanfattning : Ultrasound is one of the most widely used modalities in medical imaging because of its high cost-effectiveness, wide availability in hospitals, generation of real-time images, and use of nonionizing radiation. However, the image quality can be insufficient in some patients. LÄS MER
3. Dynamic Programming for Ultrasound Image Analysis of Atherosclerosis
Sammanfattning : Cardiovascular diseases, due to atherosclerosis, are among the most common causes of death in the industrialized world. Atherosclerotic plaque composition as well as arterial diameter and wall thickness can be used to predict the risk of cardiovascular disease. These risk factors can be assessed non-invasively by ultrasound. LÄS MER
4. Dokument inifrån : Ultraljudsbilder och visualisering av det väntade barnet
Sammanfattning : Medical technology continuously shapes and transforms the image of the body. Within the social sciences, questions have been raised about how people make sense of new representations of the body in their everyday lives. LÄS MER
5. On the Use of Ultrasound Phase Data for Arterial Characterization
Sammanfattning : Atherosclerosis is one of the major causes of death in the world. It is an inflammatory disease in the arteries which causes a gradual increase in arterial wall thickness and stiffness. Eventually a plaque could be formed, protruding into the artery and partially occluding the blood flow. LÄS MER