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The accuracy of a FEM model in predicting phantom deformation

Schneider, H.J.L. (2021) The accuracy of a FEM model in predicting phantom deformation.

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Abstract:Purpose: Previous research has resulted in a FEM model of a breast phantom, however it has not been examined yet if this model is accurate enough to predict the position of a tumor. If the FEM model is accurate and predicts the position of the tumor when the breast is deformed by an ultrasound probe than this FEM model can be be part of the solution in combining ultrasound and MRI data. Methods: In this model two types of real models are used, a breast phantom and gelatin cuboids. There is also a FEM model of the breast phantom and a FEM model of the gelatin cuboid with size 7x5x5 cm. The gelatin models are deformed with gravity and this deformation is compared to the corresponding FEM model. The breast phantom is deformed with gravity and an ultrasound probe and this deformation is also compared to the corresponding FEM model. The error of the stereo camera is measured by measuring distances on a checkerboard. Conclusions: The FEM model predicts the deformation of the breast phantom accurate enoughto find the position of a tumor with pT stage 2 or larger. The random error of the stereocamera is so large that it is difficult to find the breast phantom elasticity, there is a widerange of possible values. Researchers that want to predict the position of a smaller tumor can examine this FEM model with a better measuring system. The error of the stereo camerawas a limiting factor in examining the FEM model
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:50 technical science in general
Programme:Electrical Engineering MSc (60353)
Link to this item:http://purl.utwente.nl/essays/86076
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