New MedViz Program Manager
Dr. Ragnar Nortvedt started in his new position as Program Manager for MedViz on October 15. He has his background from both research, lecturing and industry and holds a position as adjunct Professor at Dept. of Biology, UiB, from where he previously was occupied in a fulltime Professor position. Ragnar’s R&D work over 21 years at Institute of Marine Research, NIFES, Nofima and UiB has included fish nutrition, product development of seafood, chemometrics and multivariate modeling. He has also performed research in Canada and Vietnam. For the last four years Ragnar has worked in the salmon farming industry with primary focus on quality, quality systems, certification and HES. He has long experience with research funding and publishing.
Prof. Odd Helge Gilja will continue as Scientific Director in MedViz.. |
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Last Updated on Monday, 29 October 2012 15:24 |
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Ultrasound strain imaging for tissue characterisation
PhD thesis by Roald Flesland Havre
Pathology may change elastic properties of soft tissue, thus enabling strain imaging a diagnostic method. Real-time-Elastography (RTE) is a new imaging modality in which tissue strain during applied stress can be monitored. The aim of this thesis was to validate if RTE was a reliable modality to reflect differences in elasticity or tissue hardness and to interrogate if assessment of elastic changes by RTE could be used as a diagnostic tool in clinical practice. Particularly, we focused on the ability of RTE to differentiate between benign and malignant disease in intestinal and pancreatic lesions.
Two validation studies were performed using a tissue-mimicking phantom containing inclusions with different size, depth and defined elastic properties. We evaluated the influence of different parameter settings on image quality, quantification methods and intra- and interobserver variation. A study on surgical specimens of Crohn lesions and adenocarcinomas from the bowel showed increased tissue stiffness in both entities, but no significant difference between them. In evaluation of pancreatic lesions RTE showed malignant lesions with lower strain than benign lesions, but with substantial measurement variation. Some benign lesions also present with low strain. A ROC-AUC yielded 0.81-0.87 depending on the evaluation method.
Time and place: 11.10.12 , 12:15 , Aud 2 BBB
http://www.uib.no/indremedisin/disputas/2012/10/disputas-roald-flesland-havre
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Last Updated on Thursday, 04 October 2012 08:40 |
PhD defece Veronika Solteszova and MedViz Day Thursay Oct. 4 2012
Thursday, October 4, in the auditorium of the VilVite Science Center, where we proudly host several exciting speakers. In the morning session, 9:00, Veronika Solteszova will be given the opportunity to defend her PhD thesis. The evaluation committee consists of Prof. Petter Bjørstad and evaluators Prof. Anna Vilanova from Eindhoven University of Technology, The Netherlands, and Prof. Anders Ynnerman from Linköping University, Sweden. The defense will be followed by a small reception.
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Last Updated on Friday, 28 September 2012 14:05 |
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