Virtual Reality Simulation of Liver Biopsy with a Respiratory Component

Villard, Pierre-Frédéric; Boshier, Piers R; Bello, Fernando; Gould, Debby

doi:10.5772/22033

Cited by 13 publications

(8 citation statements)

References 24 publications

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“…The Vs1 represented the TSH level of Human Body. If the output of U3 and U4 were both high (9.984nV) then the TSH level (> 3.0 uIU/mL) was high [16]. If the outputs of both OPAmps were low (4.898V) then the TSH level (<0.3uIU/mL) was low.…”

Section: Theoretical Aspectsmentioning

confidence: 99%

A Method to Simulate Treatment of Thyroid Problems in the Human Body

Chawla¹,

Pal²

2014

IJCA

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This is an effort to simulate the concept of treatment of different types of Thyroidism after determining the TSH, T3 and T4 levels in the human body. The target is to determine the effective dose of Thyroxine to be provided to the patient so that normal level of the same can be maintained in the human body. It interacts with every organ system and plays a crucial role in metabolism [1], but there is no software technique to bypass the doctors for the treatment of Thyroid malfunctioning. The Analog devices like operational amplifiers have features identical to the arithmetic operations. Primarily, the voltages in the high-gain dc amplifiers can be reduced to an average to these three variables and the operational amplifiers can do the arithmetic operations on the voltages, the accuracy of measuring voltage may be circumscribed to limited point. A Digital circuit has been implemented to determine the dosage required by the patients using the best market products. The simulation has been done using CircuitMaker ( Student version).

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Section: Theoretical Aspectsmentioning

confidence: 99%

A Method to Simulate Treatment of Thyroid Problems in the Human Body

Chawla¹,

Pal²

2014

IJCA

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“…Ribs and spines are also manually segmented in order to properly separate the different ribs. The rotation centers are computed using the inertia matrix as described in [42].…”

Section: Patient-based Simulationmentioning

confidence: 99%

Development and validation of real-time simulation of X-ray imaging with respiratory motion

Vidal

Villard

2016

Computerized Medical Imaging and Graphics

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soft tissue modelling and ray tracing on GPU to simultaneously compute the respiratory motion and X-ray imaging in real-time. Our aim is to provide validated building blocks with high fidelity to closely match both the human physiology and the physics of X-rays. A CPU-based set of algorithms is presented to model organ behaviours during respiration. Soft tissue deformation is computed with an extension of the Chain Mail method. Rigid elements move according to kinematic laws. A GPU-based surface rendering method is proposed to compute the X-ray image using the Beer-Lambert law. It is provided as an open-source library. A quantitative validation study is provided to objectively assess the accuracy of both components: i) the respiration against anatomical data, and ii) the X-ray against the Beer-Lambert law and the results of Monte Carlo simulations. Our implementation can be used in various applications, such as interactive medical virtual environment to train percutaneous transhepatic cholangiography in interventional radiology, 2D/3D registration, computation of digitally reconstructed radiograph, simulation of 4D sinograms to test tomography reconstruction tools.}, pmid = {to appear}, publisher = {Elsevier} } AbstractWe present a framework that combines evolutionary optimisation, soft tissue modelling and ray tracing on GPU to simultaneously compute the respiratory motion and X-ray imaging in real-time. Our aim is to provide validated building blocks with high fidelity to closely match both the human physiology and the physics of X-rays. A CPU-based set of algorithms is presented to model organ behaviours during respiration. Soft tissue deformation is computed with an extension of the Chain Mail method. Rigid elements move according to kinematic laws. A GPU-based surface rendering method is proposed to compute the X-ray image using the Beer-Lambert law. It is provided as an open-source library. A quantitative validation study is provided to objectively assess the accuracy of both components: i) the respiration against anatomical data, and ii) the X-ray against the Beer-Lambert law and the results of Monte Carlo simulations. Our implementation can be used in various applications, such as interactive medical virtual environment to train percutaneous transhepatic cholangiography in interventional radiology, 2D/3D registration, computation of digitally reconstructed radiographs, simulation of 4D sinograms to test tomography reconstruction tools.

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“…There are two main types of medical training systems in the literature: virtual reality (VR) systems and mannequin-based systems. VR based systems ( [3], [4], [5], [6], [7], [8], [16], [17], [18], [19], [20], [21]) are characterized by the virtual, normally three dimensional (3D), scene they create and allow users to interact with. In a medical application, this scene would generally be a patient's body and/or internal organs, and users would interact with it through the use of a virtual tool, typically a haptic robotic device that can provide force feedback in various DOFs.…”

Section: Background On Medical Simulatorsmentioning

confidence: 99%

An Augmented Reality Haptic Training Simulator for Spinal Needle Procedures

Sutherland¹,

Hashtrudi-Zaad

Sellens

et al. 2013

IEEE Trans. Biomed. Eng.

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This paper presents the prototype for an augmented reality haptic simulation system with potential for spinal needle insertion training. The proposed system is composed of a torso mannequin, a MicronTracker2 optical tracking system, a PHANToM haptic device, and a graphical user interface to provide visual feedback. The system allows users to perform simulated needle insertions on a physical mannequin overlaid with an augmented reality cutaway of patient anatomy. A tissue model based on a finite-element model provides force during the insertion. The system allows for training without the need for the presence of a trained clinician or access to live patients or cadavers. A pilot user study demonstrates the potential and functionality of the system.

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Virtual Reality Simulation of Liver Biopsy with a Respiratory Component

Cited by 13 publications

References 24 publications

A Method to Simulate Treatment of Thyroid Problems in the Human Body

A Method to Simulate Treatment of Thyroid Problems in the Human Body

Development and validation of real-time simulation of X-ray imaging with respiratory motion

An Augmented Reality Haptic Training Simulator for Spinal Needle Procedures

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