Bildverarbeitung für die Medizin 2014: Algorithmen - Systeme by Thomas Martin Deserno, Heinz Handels, Hans-Peter Meinzer,

By Thomas Martin Deserno, Heinz Handels, Hans-Peter Meinzer, Thomas Tolxdorff

In den letzten Jahren hat sich der Workshop "Bildverarbeitung für die Medizin" durch erfolgreiche Veranstaltungen etabliert. Ziel ist auch 2014 wieder die Darstellung aktueller Forschungsergebnisse und die Vertiefung der Gespräche zwischen Wissenschaftlern, Industrie und Anwendern. Die Beiträge dieses Bandes - einige davon in englischer Sprache - umfassen alle Bereiche der medizinischen Bildverarbeitung, insbesondere Bildgebung und -akquisition, Molekulare Bildgebung, Visualisierung und Animation, Bildsegmentierung und -fusion, Anatomische Atlanten, Zeitreihenanalysen, Biomechanische Modellierung, Klinische Anwendung computerunterstützter Systeme, Validierung und Qualitätssicherung u.v.m.

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Extra info for Bildverarbeitung für die Medizin 2014: Algorithmen - Systeme - Anwendungen Proceedings des Workshops vom 16. bis 18. März 2014 in Aachen

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Gold standard has been set up as consensus between human and machine results. Altogether, 4537 thickening areas are processed. 30 working hours have been spent on the verification. 4% of the thickenings found to be correctly detected. 2% as expected. 5%. To validate the automatic matching of thickenings from the machine, physicians have evaluated the matching results using further 18 CT data from 9 patients. After the evaluation, the matching revealed to be correct in 95% of all cases, which reflected high sensitivity as well.

E. = 10−4 and δ = 10−3 , for all experiments. Due to the parameter reduction, the original problem simplifies to min TP ,TT ≥0 C[VP [TP , TT ], TP , FT [TP , TT ], TT ] − CK 2 2 (6) Since υδ is continuously differentiable, VP and FT are differentiable with respect to TP and TT . Thus, gradient based optimization methods can be used to solve this problem. In particular, we use MATLAB’s Trust-Region algorithm [7] to solve the remaining constrained two parameter problem. 89 sec and flip angle = 15 deg).

1 zeigen, dass beide Gestaltungskonzepte eine geringere maximale Deformation u ¨ber den Herzzyklus verursachen als die untersuchten kommerziellen Ringformen, wodurch das Risiko einer Ringdehiszenz gemindert werden kann. Auch die durchschnittliche Deformation u ¨ber den Herzzyklus ist bei beiden Konzepten niedrig. Das Konzept zur Wiederherstellung des nat¨ urlichen Durchmesserverh¨ altnisses (Konzept 1) bewirkt dabei etwas geringere durchschnittliche und maximale Deformationen als das Konzept der isotropen Verkleinerung (Konzept 2).

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