Comparative analysis for evaluating the traceability of interventional devices using blood vessel phantom models made of PVA-H or silicone

Yu, Chang Ho; Kwon, Tae Kyu; Park, Chan Hee; Ohta, Makoto; Kim, Sung Hoon

doi:10.3233/thc-150966

Cited by 7 publications

(7 citation statements)

References 26 publications

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“…PVA-C presents high optical transparency and can reproduce elasticity and viscosity similar to soft tissues [11], keeping its wetness over an extended period of time [16]. PVA-C has been previously used in research and development of endovascular devices, reproducing soft tissue models like arteries [16, 18], as well as to fabricate phantoms for ultrasonography [11]. PVA-C provides a unique opportunity to manufacture multilayer and multimodal phantoms.…”

Section: Introductionmentioning

confidence: 99%

Polyvinyl alcohol cryogel phantoms of biological tissues for wideband operation at microwave frequencies

et al. 2019

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The aim of this work is to provide a methodology to model the dielectric properties of human tissues based on phantoms prepared with an aqueous solution, in a semi-solid form, by using off-the-shelf components. Polyvinyl alcohol cryogel (PVA-C) has been employed as a novel gelling agent in the fabrication of phantoms for microwave applications in a wide frequency range, from 500 MHz to 20 GHz. Agar-based and deionized water phantoms have also been manufactured for comparison purposes. Mathematical models dependent on frequency and sucrose concentration are proposed to obtain the complex permittivity of the desired mimicked tissues. These models have been validated in the referred bandwidth showing a good agreement to experimental data for different sucrose concentrations. The PVA-C model provides a great performance as compared to agar, increasing the shelf-life of the phantoms and improving their consistency for contact-required devices. In addition, the feasibility of fabricating a multilayer phantom has been demonstrated with a two-layer phantom that exhibits a clear interface between each layer and its properties. Thus, the use of PVA-C extends the option for producing complex multilayer and multimodal phantoms.

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Section: Introductionmentioning

confidence: 99%

Polyvinyl alcohol cryogel phantoms of biological tissues for wideband operation at microwave frequencies

et al. 2019

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“…Different materials can be used to fabricate the phantom model. For example, to test a guidewire or a catheter behavior, phantom’s materials used in the literature include polyvinyl alcohol (PVA), 102 PVA-hydrogel (PVA-H), 38 , 80 , 103 PVA-H and silicone (high transparency), 104 and PVA-cryogel 105 …”

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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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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“…Vasculature. In order to investigate the traceability of interventional devices, Yu et al 24 created blood vessel phantoms composed of poly(vinyl alcohol) hydrogel (PVA-H) and silicone (Figure 4(a)). This study was carried out to increase the number of endovascular treatments implementing catheters.…”

Section: Gel-based Methodsmentioning

confidence: 99%

“…The cornstarch helped adjust the echogenicity of the gelatin mixture and controlled the echogenicity of the target with different echo levels as needed and with a significant reduction in the posterior shadowing from other typically used targets. 24 and (b) Cross section of the biopsy phantom showing its layers and corresponding ultrasound appearance. 25 Targeting phantoms.…”

Section: Gel-based Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Engineering functional and anthropomorphic models for surgical training in interventional radiology: A state-of-the-art review

Zhao

Mushtaq

et al. 2022

Proc Inst Mech Eng H

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Training medical students in surgical procedures and evaluating their performance are both necessary steps to ensure the safety and efficacy of surgeries. Traditionally, trainees practiced on live patients, cadavers or animals under the supervision of skilled physicians, but realistic anatomical phantom models have provided a low-cost alternative because of the advance of material technology that mimics multi-layer tissue structures. This setup provides safer and more efficient training. Many research prototypes of phantom models allow rapid in-house prototyping for specific geometries and tissue properties. The gel-based method and 3D printing-based method are two major methods for developing phantom prototypes. This study excluded virtual reality based technologies and focused on physical phantoms, total 189 works published between 2015 and 2020 on anatomical phantom prototypes made for interventional radiology were reviewed in terms of their functions and applications. The phantom prototypes were first categorized based on fabrication methods and then subcategorized based on the organ or body part they simulated; the paper is organized accordingly. Engineering specifications and applications were analyzed and summarized for each study. Finally, current challenges in the development of phantom models and directions for future work were discussed.

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Comparative analysis for evaluating the traceability of interventional devices using blood vessel phantom models made of PVA-H or silicone

Cited by 7 publications

References 26 publications

Polyvinyl alcohol cryogel phantoms of biological tissues for wideband operation at microwave frequencies

Polyvinyl alcohol cryogel phantoms of biological tissues for wideband operation at microwave frequencies

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

Engineering functional and anthropomorphic models for surgical training in interventional radiology: A state-of-the-art review

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