J
Johan M. Thijssen
Researcher at Radboud University Nijmegen
Publications - 149
Citations - 3814
Johan M. Thijssen is an academic researcher from Radboud University Nijmegen. The author has contributed to research in topics: Image segmentation & Segmentation. The author has an hindex of 36, co-authored 148 publications receiving 3640 citations. Previous affiliations of Johan M. Thijssen include Radboud University Nijmegen Medical Centre & Boston Children's Hospital.
Papers
More filters
Journal ArticleDOI
Comparison of one-dimensional and two-dimensional least-squares strain estimators for phased array displacement data.
Richard G.P. Lopata,Hendrik H.G. Hansen,Maartje M. Nillesen,Johan M. Thijssen,Chris L. de Korte +4 more
TL;DR: RMSE analysis revealed that the 2D LSQSE yields better results for phased array data, especially for larger insonification angles, and showed that the LSQ kernel size should be limited to avoid loss in resolution.
Journal ArticleDOI
The impulse response of a focused source with an arbitrary axisymmetric surface velocity distribution
TL;DR: In this paper, an analytical expression for the impulse response of a focused transducer with an axisymmetric nonuniform surface velocity distribution is derived using a finite polynomial expansion of the velocity distribution function.
Journal ArticleDOI
Modeling Envelope Statistics of Blood and Myocardium for Segmentation of Echocardiographic Images
Maartje M. Nillesen,Richard G.P. Lopata,I. H. Gerrits,Livia Kapusta,Johan M. Thijssen,Chris L. de Korte +5 more
TL;DR: A trade-off between preservation of sharpness of edges and goodness-of-fit when estimating local shape and scale parameters is evident for parametric images, and adaptive filtering outperforms parametric imaging for the segmentation of echocardiographic images.
Journal ArticleDOI
Noninvasive detection of hepatic lipidosis in dairy cows with calibrated ultrasonographic image analysis
Alexander Starke,A. Haudum,Gert Weijers,K. Herzog,Peter Wohlsein,Martin Beyerbach,C.L. de Korte,Johan M. Thijssen,Jürgen Rehage +8 more
TL;DR: The aim was to test the accuracy of calibrated digital analysis of ultrasonographic hepatic images for diagnosing fatty liver in dairy cows by means of a novel method, computer-aided ultrasound diagnosis (CAUS), previously published by the authors.
Journal ArticleDOI
New reference values for echocardiographic dimensions of healthy Dutch children
Lucy I H Overbeek,Livia Kapusta,Petronella G. M. Peer,C.L. de Korte,Johan M. Thijssen,O. Daniëls +5 more
TL;DR: New reference values of heart dimensions in healthy children have been found which should replace the presently used ones and there is no difference between boys and girls.