Interaction model between elastic objects for haptic feedback considering collisions of soft tissue

“…In an experiment with 15 medical students, Kuroda et al [13] tested the use of a haptic device to feel a difference in stiffness between adjacent soft tissues in the rectum. The goal was to simulate rectal palpation, distinguishing between the prostate and the tissues lying in front of it using forces based on the relative stiffness of the tissues.…”

Section: Discussionmentioning

confidence: 99%

Will haptic feedback speed up medical imaging? An application to radiation treatment planning

Anderlind¹,

Noz²,

Sallnäs³

et al. 2008

Acta Oncologica

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“…Shape interaction framework required for hemodynamic surgical planning can be established on a typical haptic hardware [25,28] but for this application there is no need for sense feed-back or stereo displays. Free-form CAD surfaces are not necessarily associated with a closed-form mathematical definition and created through artistic/ sculpturing [4,36,73] or reverse engineering measurements [75] of random point clouds.…”

Section: Cardiovascular Anatomical Design and Human-shape Interactionmentioning

confidence: 99%

Patient-specific surgical planning and hemodynamic computational fluid dynamics optimization through free-form haptic anatomy editing tool (SURGEM)

Pekkan

Whited

Kanter

et al. 2008

Med Biol Eng Comput

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The first version of an anatomy editing/surgical planning tool (SURGEM) targeting anatomical complexity and patient-specific computational fluid dynamics (CFD) analysis is presented. Novel three-dimensional (3D) shape editing concepts and human-shape interaction technologies have been integrated to facilitate interactive surgical morphology alterations, grid generation and CFD analysis. In order to implement "manual hemodynamic optimization" at the surgery planning phase for patients with congenital heart defects, these tools are applied to design and evaluate possible modifications of patient-specific anatomies. In this context, anatomies involve complex geometric topologies and tortuous 3D blood flow pathways with multiple inlets and outlets. These tools make it possible to freely deform the lumen surface and to bend and position baffles through real-time, direct manipulation of the 3D models with both hands, thus eliminating the tedious and time-consuming phase of entering the desired geometry using traditional computer-aided design (CAD) systems. The 3D models of the modified anatomies are seamlessly exported and meshed for patient-specific CFD analysis. Free-formed anatomical modifications are quantified using an in-house skeletization based cross-sectional geometry analysis tool. Hemodynamic performance of the systematically modified anatomies is compared with the original anatomy using CFD. CFD results showed the relative importance of the various surgically created features such as pouch size, vena cave to pulmonary artery (PA) flare and PA stenosis. An interactive surgical-patch size estimator is also introduced. The combined design/analysis cycle time is used for comparing and optimizing surgical plans and improvements are tabulated. The reduced cost of patient-specific shape design and analysis process, made it possible to envision large clinical studies to assess the validity of predictive patient-specific CFD simulations. In this paper, model anatomical design studies are performed on a total of eight different complex patient specific anatomies. Using SURGEM, more than 30 new anatomical designs (or candidate configurations) are created, and the corresponding user times presented. CFD performances for eight of these candidate configurations are also presented.

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Interaction model between elastic objects for haptic feedback considering collisions of soft tissue

Cited by 40 publications

References 10 publications

Needle insertion into soft tissue: A survey

Needle insertion into soft tissue: A survey

Will haptic feedback speed up medical imaging? An application to radiation treatment planning

Patient-specific surgical planning and hemodynamic computational fluid dynamics optimization through free-form haptic anatomy editing tool (SURGEM)

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