A physically-based model for guidewire simulation on patient-specific data

Bhat, Suraj; Kesavadas, Thenkurussi; Hoffmann, Kenneth R.

doi:10.1016/j.ics.2005.03.179

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…This information assists the specialist to select an instrument with the proper mechanical properties and, as a result, increases the success rate of a procedure in accessing the target location. The research done in this field either focuses on catheter 10 , 11 , 16 , 17 , 20 , 37 , 38 or on guidewire selection 39 – 41 However, in practice, the instrument selection procedure is still based on the specialist’s experience, which is subjective rather than objective.…”

Section: Resultsmentioning

confidence: 99%

“…Finite-element method (FEM) is a common numerical technique to model a deformable object, 47 – 50 including the behavior of the guidewire and catheter inside the body 5 , 15 , 16 , 20 – 22 , 24 – 28 , 31 , 32 , 34 , 37 , 39 , 41 , 51 – 69 In this method, the instrument is first divided into a set of basic elements connected by nodes. A function that solves the equilibrium equations is found for each element.…”

Section: Resultsmentioning

confidence: 99%

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Navigation of guidewires and catheters in the body during intervention procedures: a review of computer-based models

et al. 2018

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Guidewires and catheters are used during minimally invasive interventional procedures to traverse in vascular system and access the desired position. Computer models are increasingly being used to predict the behavior of these instruments. This information can be used to choose the right instrument for each case and increase the success rate of the procedure. Moreover, a designer can test the performance of instruments before the manufacturing phase. A precise model of the instrument is also useful for a training simulator. Therefore, to identify the strengths and weaknesses of different approaches used to model guidewires and catheters, a literature review of the existing techniques has been performed. The literature search was carried out in Google Scholar and Web of Science and limited to English for the period 1960 to 2017. For a computer model to be used in practice, it should be sufficiently realistic and, for some applications, real time. Therefore, we compared different modeling techniques with regard to these requirements, and the purposes of these models are reviewed. Important factors that influence the interaction between the instruments and the vascular wall are discussed. Finally, different ways used to evaluate and validate the models are described. We classified the developed models based on their formulation into finite-element method (FEM), mass-spring model (MSM), and rigid multibody links. Despite its numerical stability, FEM requires a very high computational effort. On the other hand, MSM is faster but there is a risk of numerical instability. The rigid multibody links method has a simple structure and is easy to implement. However, as the length of the instrument is increased, the model becomes slower. For the level of realism of the simulation, friction and collision were incorporated as the most influential forces applied to the instrument during the propagation within a vascular system. To evaluate the accuracy, most of the studies compared the simulation results with the outcome of physical experiments on a variety of phantom models, and only a limited number of studies have done face validity. Although a subset of the validated models is considered to be sufficiently accurate for the specific task for which they were developed and, therefore, are already being used in practice, these models are still under an ongoing development for improvement. Realism and computation time are two important requirements in catheter and guidewire modeling; however, the reviewed studies made a trade-off depending on the purpose of their model. Moreover, due to the complexity of the interaction with the vascular system, some assumptions have been made regarding the properties of both instruments and vascular system. Some validation studies have been reported but without a consistent experimental methodology.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Navigation of guidewires and catheters in the body during intervention procedures: a review of computer-based models

et al. 2018

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“…Most of these studies focus on catheter function and movement. However, none of the existing devices displays the force reflection or heartbeat [9], and there are no specific interfaces to be used with force feedback [10] or to demonstrate differences in the actual IR image [11].…”

Section: Introductionmentioning

confidence: 99%

Development of a training system for interventional radiology

Ide

Fujii

Fujioka

et al. 2009

Modelling in Medicine and Biology VIII

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The objective of the study reported here was to develop a master slave system for catheter-guided vascular surgery conducted by interventional radiology. By using a master slave system, the surgeon is not exposed to x-rays during the operation because the master tool managed by an operator is located away from the slave tool, which is near the patient. The system must provide vivid realism to the surgeon, particularly with regard to force information, because this surgery is performed in three dimensions while the surgeon watches a two-dimensional monitor. In this study, we developed a training system for a catheter guide in order to upgrade the surgeon's skills because it is difficult to upgrade a master slave system without training. The system consists of a human interface device as the master tool, a control box, and a simulator. This training simulator is for the master slave system, which we developed. The master tool has a force display function using an electrorheological fluid. Two advantages of the fluid actuator are that it can be used without force feedback control and there is mechanical safety, as the surgeon does not experience any accidental force. An open loop control is used to achieve a simple mechanism and algorithm. Our results of preliminary experiments indicated that the output force achieved correlated with that sent from the PC. Three surgeons evaluated this training system under a variety of conditions. The operation of the master tool is simple. The thrust and rotation movements of the catheter can be handled instinctively and without complicated instructions. In addition, accurate force display, response, and stability were achieved with the electrorheological fluid. In the future, the training will need for a realistic depiction of interventional radiology, and the system provides accurate readings for aspiration and blood flow.

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A physically-based model for guidewire simulation on patient-specific data

Cited by 2 publications

References 11 publications

Navigation of guidewires and catheters in the body during intervention procedures: a review of computer-based models

Navigation of guidewires and catheters in the body during intervention procedures: a review of computer-based models

Development of a training system for interventional radiology

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