In vitro strain measurements in cerebral aneurysm models for cyber‐physical diagnosis

Robotics Computer Surgery

et al. 2016

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Section: Resultsmentioning

confidence: 99%

Real‐time in vitro intravascular reconstruction and navigation for endovascular aortic stent grafting

Robotics Computer Surgery

et al. 2016

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“…Image processing for stress analysis was completed for numerical evaluations of the stent expansion. In the future, a blood flow simulator [15] will be added to circulate inside the model for conducing research and evaluations. Improvements in ML-EM method will be proposed to reconstruct the cross sections with both stress and thickness information after the stent expansion for evaluation and visualization in 3D based on this platform.…”

Section: Discussionmentioning

confidence: 99%

In-vitro intravascular simulator with quantitative evaluation for surgical tools used in cerebral aneurysm surgery based on stress analysis

Kojima

2013 IEEE International Conference on Robotics and Automation

et al. 2013

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This paper presents a new in-vitro simulator that can simulate the new technology of three-dimensional digital subtraction angiography (DSA) to perform a cerebral aneurysm surgery. Then, propose a new technique for the numerical evaluation of the surgical tools applied within this interventional surgery to aid in the design and selection of surgical instruments. Initially, the in-vitro intravascular simulator was constructed, followed by cerebral aneurysm models that were fabricated with highly sensitive photoelastic materials of epoxy resin. Then reconstruct virtual reality modeling of the blood vessel and catheter to record the position information and realize virtual guidance for training. Meanwhile, conduct image processing of photoelastic effects for numerical evaluations of surgical instruments such as catheter insertion and stent expansion. During the stent expansion experiment, the average stress in the selected region of interest caused by the expansion was calculated and compared with the corresponding value obtained before the expansion. The presented simulator and measurement technique can assist in improving a surgeons skills, quantifying the performance of medical mechanisms, and contribute to 3D analysis of stress distribution. This approach can also provide feedback control for robot assisted endovascular systems.

In vitrosimulator with numerical stress analysis for evaluation of stent-assisted coiling embolization in cerebral aneurysm treatments

Kojima

Int J Med Robotics Comput Assist Surg

et al. 2013

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