Titlebook: World Congress on Medical Physics and Biomedical Engineering September 7 - 12, 2009 Munich, Germany; Vol. 25/2 Diagnostic Olaf Dössel,Wolfg

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High Concentration Barium Sulfate Used in Gastric Cancer Screening, barium sulfate is evaluated to be better than that with moderate concentration one. The study on characteristics of barium sulfate may improve radiography technology in mass screening for gastric cancer.

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,Investigations of Artifact «Pseudo-flow» Physical Mechanisms in Ultrasound Dopplerography,and reception of more true echogram and hence reduces a diagnostic error. The knowledge of occurrence laws of artefact “pseudo-stream” which is a diagnostic disease sign allows to raise the information parameters about a blood-groove and other moving structures.

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Limits of Accuracy in Assessing Vessel Permeabilities Using Permeability-Surface(PS)-Limited Two-Coperty with is completely unconsidered in the Tofts model. Therefore changing v. may indicate wrongly to extravascular extracellular fractional volume when in fact the vessel distance is varying and vice versa.

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Imaging Electric Conductivity with MRI, currents, or RF probes. In this study, phantom experiments underline the principle feasibility of MR-EPT. Furthermore, initial conductivity measurements in the brain allow distinguishing cerebrospinal fluid from the surrounding grey and white matter.

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1680-0737 ecent challenges in Biomedical Engineering and Medical PhysiPresent Your Research to the World! The World Congress 2009 on Medical Physics and Biomedical Engineering – the triennial scientific meeting of the IUPESM - is the world’s leading forum for presenting the results of current scientific work

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Application study of monitoring microwave coagulation therapy using ultrasonic tissue characterizatwave ablation generator. Ultrasonic echo signals of the pig liver in different temperature were sampled and processed. Experimental results show that the integral value of backscattered ultrasound increases with the temperature and it is possible using ultrasonic tissue characterization to monitor microwave coagulation therapy in real time.