Search for dissertations about: "ultrasonic"
Showing result 11 - 15 of 192 swedish dissertations containing the word ultrasonic.
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11. Towards a measurement of paper pulp quality : ultrasonic spectroscopy of fibre suspensions
Abstract : For the paper and pulp industry in Sweden and Finland to remain competitive against countries with lower overheads, they have to constantly strive to improve the quality and the efficiency of the manufacturing processes. One of the ways of doing this is to introduce sensors that will provide valuable online feedback on the characteristics of the pulp so that adjustments can be made to optimise the manufacturing process. READ MORE
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12. Boundary Detection in Cardiovascular Ultrasonic Images Based on Multiscale Dynamic Programming
Abstract : Non-invasive ultrasonic imaging is widely used in cardiovascular studies as well as clinical diagnostics. This is due to its non-invasiveness, low cost and easy operation. However, ultrasonic images are noisy and present artifacts, speckles, and echo dropouts. READ MORE
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13. Time-domain Reconstruction Methods for Ultrasonic Array Imaging : A Statistical Approach
Abstract : This thesis is concerned with reconstruction techniques for ultrasonic array imaging based on a statistical approach. The reconstruction problem is posed as the estimation of an image consisting of scattering strengths. READ MORE
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14. Automated ultrasonic measurement of human arteries by a multiscale dynamic programming approach
Abstract : .... READ MORE
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15. Model Based Reconstruction of Ultrasonic Images
Abstract : This thesis is concerned with reconstruction methods for ultrasonic imaging, primarily applied to non-destructive material inspection. In ultrasonic inspection, a specimen is insonified with pulses of high frequency ultrasound, which enters the material and propagates through it. READ MORE