MODELLING OF SOFT TISSUE CUTTING IN VIRTUAL SURGERY SIMULATION: A LITERATURE REVIEW

2017 ◽  
Vol 32 (3) ◽  
Author(s):  
Qiangqiang Cheng ◽  
Peter X. Liu ◽  
Pinghua Lai ◽  
Shaoping Xu ◽  
Yanni Zou ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Literature Review ◽  
Virtual Surgery ◽  
Surgery Simulation ◽  
Tissue Cutting

scholarly journals Real-Time Smoke and Bleeding Simulation in Virtual Surgery

2006 ◽  
Author(s):  
Stefan Daenzer ◽  
Kevin Montgomery ◽  
Ruediger Dillmann ◽  
Roland Unterhinninghofen
Keyword(s):  
Minimally Invasive Surgery ◽  
Soft Tissue ◽  
Minimally Invasive ◽  
Open Source ◽  
Real Time ◽  
Invasive Surgery ◽  
Collision Detection ◽  
Virtual Surgery ◽  
Surgery Simulation ◽  
Surgery Simulator

We describe the implementation of smoke and bleeding simulation in the open source surgery simulator SPRING , which is particularly targeted for minimally invasive surgery simulation. Many smoke and bleeding simulations offer high physical and visual accuracy, but the underlaying models are to complex to run in real-time while performing soft-tissue simulation, collision detection and haptic device support at the same time. Our algorithms are based on simple models, that allow the surgery simulation to run in real-time.

A study of real-time simulation of liver of virtual surgical robot based on biologically position-based dynamic model

2021 ◽  
pp. 1-16
Author(s):  
Dan Luo ◽  
Yu Zhang ◽  
Jia Li ◽  
Jisheng Li
Keyword(s):  
Soft Tissue ◽  
Real Time ◽  
Surgical Instruments ◽  
Organic Polymer ◽  
Tetrahedral Mesh ◽  
Virtual Surgery ◽  
Constraint Force ◽  
Real Time Simulation ◽  
Time Simulation ◽  
Spring Force

Virtual surgery robot can accurately modeling of surgical instruments and human organs, and realistic simulation of various surgical phenomena such as deformation of organic tissues, surgery simulation system can provide operators with reusable virtual training and simulation environment. To meet the requirement of virtual surgery robot for the authenticity and real-time of soft tissue deformation and surgical simulation in liver surgery, a new method is proposed to simulate the deformation of soft tissue. This method combines the spring force, the external force of the system, and the constraint force produced by the constraint function of the position-based dynamics. Based on the position-based dynamics, an improved three-parameter mass-spring model is added. In the calculation of the elastic force, the nonlinearity and viscoelasticity of the soft tissue are introduced, and the joint force of the constraint projection process and the constraint force of the position-based dynamics is used to modify mass points movement. The method of position-based dynamics based on biological characteristics, not only considers the biomechanical properties of biological soft tissue as an organic polymer such as viscoelasticity, nonlinearity, and incompressibility but also retains the rapidity and stability of the position based dynamic method. Through the simulation data, the optimal side length of tetrahedral mesh in the improved three-parameter model is obtained, and the physical properties of the model are proved. The real-time simulation of the liver and other organs is completed by using the Geomagic touch force feedback device, which proves the practicability and effectiveness of this method.

Failure behavior and influence of surgical tool edges in soft tissue cutting

2021 ◽  
Vol 68 ◽  
pp. 69-78
Author(s):  
Zhihua Liu ◽  
Hang Chen ◽  
Jianbo Sui ◽  
Zhishan Yuan ◽  
Zhihua Chen ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Failure Behavior ◽  
Tissue Cutting ◽  
Surgical Tool

Virtual Training System with Physical Viscoelastic Model and Blood Flow Simulation Based on a Range-Based SPH Method

2015 ◽  
Vol 25 ◽  
pp. 41-53 ◽  
Author(s):  
Yi Dong Bao ◽  
Dong Mei Wu
Keyword(s):  
Blood Flow ◽  
Soft Tissue ◽  
Flow Simulation ◽  
Training System ◽  
Sph Method ◽  
Viscoelastic Creep ◽  
Blood Flow Simulation ◽  
Tissue Cutting ◽  
Creep Characteristics ◽  
Cutting Model

A physical mesh-less soft tissue cutting model with the viscoelastic creep characteristics has been proposed in this paper. The model is composed of filled spheres which are connected by Kelvin structure, so as to realize the cutting with viscoelastic creep characteristics. Then, it is further compared with the mass spring model in order to verify the effectiveness of the model. Secondly, a range-based Smoothed Particle Hydrodynamics (SPH) method with variable smoothing length is proposed, in order to simulate the blood flow simulation effect in the virtual surgery training system. Finally, the two are combined to be applied to the kidney soft tissue cutting experiment in surgery trainings. Experiments show there is a significant improvement on the cutting and simulation effect in terms of the viscoelasticity of the soft tissue cutting and the pressure and viscous force of blood flow.

scholarly journals Concurrent Pseudomonas Periorbital Necrotizing Fasciitis and Endophthalmitis: A Case Report and Literature Review

Pathogens ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 854
Author(s):  
Yu-Kuei Lee ◽  
Chun-Chieh Lai
Keyword(s):  
Soft Tissue ◽  
Literature Review ◽  
Necrotizing Fasciitis ◽  
Subcutaneous Tissue ◽  
Superficial Fascia ◽  
Upper Eyelid ◽  
Case Presentation ◽  
Phthisis Bulbi ◽  
Eyelid Swelling ◽  
The Rich

(1) Background: Necrotizing fasciitis (NF) is an infection involving the superficial fascia and subcutaneous tissue. Endophthalmitis is an infection within the ocular ball. Herein we report a rare case of concurrent periorbital NF and endophthalmitis, caused by Pseudomonas aeruginosa (PA). We also conducted a literature review related to periorbital PA skin and soft-tissue infections. (2) Case presentation: A 62-year-old male had left upper eyelid swelling and redness; orbital cellulitis was diagnosed. During eyelid debridement, NF with the involvement of the upper Müller’s muscle and levator muscle was noted. The infection soon progressed to scleral ulcers and endophthalmitis. The eye developed phthisis bulbi, despite treatment with intravitreal antibiotics. (3) Conclusions: Immunocompromised individuals are more likely than immunocompetent hosts to be infected by PA. Although periorbital NF is uncommon due to the rich blood supply in the area, the possibility of PA infection should be considered in concurrent periorbital soft-tissue infection and endophthalmitis.

scholarly journals Male urethral sarcoma: a case report and literature review

2015 ◽  
Vol 14 (1) ◽  
pp. 64-66
Author(s):  
Magno Almeida Nogueira ◽  
Guilherme Campelo Lopes dos Santos ◽  
Roberto Iglesias Lopes ◽  
Octavio Henrique Arcos Campos ◽  
Marcos Francisco Dall'Oglio ◽  
...  
Keyword(s):  
Case Report ◽  
Urinary Tract ◽  
Soft Tissue ◽  
Literature Review ◽  
Soft Tissue Sarcomas ◽  
Heterogeneous Group ◽  
Men 2

Urethral tumors are rare and aggressive. They usually affect men (2:1) and occur more commonly in white (85% of cases). Soft tissue sarcomas are a heterogeneous group of tumors that arise from embryonic mesoderm. It represents 1% of all cases of urinary tract malignancies and rarely primary affect the ureter. We report a case of male urethral sarcoma. To date, only two similar cases have been published in literature.

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