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In using ultrasound echo strain to estimate temperature for monitoring HIFU thermal therapy, block matching algorithms are used to estimate the displacement over two image frames. However, due to the image distortion and artifacts over frames, the displacement will be estimated with outliers which will seriously bias echo strain estimation. This paper introduces a novel model-based algorithm to constrain...
Blood loss is a concern in the liver resections. In line with the wide implementation of ablation process, bleeding during liver resections can be minimized. However, the division process has to be accurately monitored to provide efficient liver resection in terms of time and safety. The modeling of liver tissue and division tool interaction along with the deformation of the liver tissue is studied...
Mechanical models for soft organ tissues are necessary for a variety of medical applications, such as surgical planning, virtual reality surgery simulators, and for diagnostic purposes. An adequate quantitative description of the mechanical behavior of tissues requires adequate and accurate experimental data to be acquired and analyzed. We present results of three types of ex vivo tests on pig liver...
Needle insertion treatments require accurate placement of the needle tip into the target cancer. However, it is difficult to insert the needle into the cancer because of cancer displacement due to the organ deformation. Then, a path planning using numerical simulation to analyze the deformation of the organ is important for the accurate needle insertion. The objective of our work is to develop and...
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