Low-Cost and Easily Fabricated Ultrasound-Guided Breast Phantom for Breast Biopsy Training

Ng, Si Yen; Kuo, Yao‐Lung; Lin, Chi-Lun

doi:10.3390/app11167728

Cited by 15 publications

(9 citation statements)

References 29 publications

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“…Ashurst et al 50 noted that the use of mechanical simulators enhanced the performance of trainees in applying cricoid pressure. Furthermore, Ng et al 51 studied breast biopsy skill using a biomechanically compliant simulator. The results showed that the confidence levels of the participants greatly increased through simulation training 51 .…”

Section: Discussionmentioning

confidence: 99%

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Biomechanically Compliant Gynecologic Training Simulator

Nadhif

Irsyad²,

Ocviyanti³

2022

Sim Healthcare

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Introduction: Pap smear training is commonly conducted using simulators before practicing with humans. Unfortunately, existing simulators do not well simulate the biomechanical properties of pelvic tissues, and this may negatively impact the training outcome. In this study, we used finite element analysis (FEA) to identify a material that most accurately simulates pelvic tissues in terms of biomechanical properties for fabricating gynecologic training simulators. The selected material was then used to fabricate a vagina and cervix model using a hybrid technique of fused deposition modeling and molding to qualitatively confirm the structural integrity of the simulator. Methods: The vagina and cervix were reconstructed in a 3-dimensional feature according to geometrical parameters reported in the literature. The biomechanical compliance of the simulators was investigated by comparing 5 materials-RTV615, Dragon Skin 10, Dragon Skin 30, Dragon Skin FX-Pro, and Ecoflex 00-30-and a pelvic tissue model (control) using 2 FEA modules. The structural mechanics module simulated the insertion and opening of a vaginal speculum, and the (1) horizontal opening of the vagina and peak von Mises stress at the anterior and (2) posterior walls of the vagina were obtained. The explicit dynamics module estimated (1) the fracture stress during punch biopsies and (2) maximum perpendicular deformation of the cervix before break. The most biomechanically compliant material was subsequently used to fabricate the simulator using the hybrid technique. Results: From the FEA, the horizontal opening of the vagina, peak von Mises stress at the anterior wall of the vagina, peak von Mises stress at the posterior wall of the vagina fracture stress, and maximum perpendicular deformation of the cervix before break were obtained; the results of Dragon Skin 10 and the control were most similar. Therefore, the simulator was fabricated using the material. A qualitative evaluation of the simulator by the naked eye verified its structural integrity. Conclusions: Of the materials studied, the FEA results showed that Dragon Skin 10 was the most accurate material for simulating pelvic tissues in terms of the biomechanical properties in a gynecologic training simulator. The simulator was also successfully fabricated using the hybrid technique. Further studies may also involve experimental testing to support the simulation results.

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Section: Discussionmentioning

confidence: 99%

“…Furthermore, Ng et al 51 studied breast biopsy skill using a biomechanically compliant simulator. The results showed that the confidence levels of the participants greatly increased through simulation training 51 . The studies mentioned demonstrate the effectiveness of relevant mechanical simulators in medical education.…”

Section: Discussionmentioning

confidence: 99%

Biomechanically Compliant Gynecologic Training Simulator

Nadhif

Irsyad²,

Ocviyanti³

2022

Sim Healthcare

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“…For example, the combination of Thermoplastic Polyurethane (TPU) and Acrylonitrile Butadiene Styrene (ABS) can be used to make a phantom allowing needle insertion training [8]. Models based on gelatin can also be used [9]. However, these solutions require manufacturing new products to reproduce different behaviors.…”

Section: Haptic Devices Used For Needle Insertion Simulatorsmentioning

confidence: 99%

Review on Needle Insertion Haptic Simulation

et al. 2022

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This short review updates an exhaustive one written by Correa et al in 2019 about haptic training simulation on needle insertion in the medical field. b) Recent findings: Latest works refine wellknown models and enhance setups and methods to facilitate generically getting experimental data. c) Summary:We provide a complementary focus on device specifications and recent models to render this specific haptic feedback on Computer-Based Simulators. Assessment approaches and the issues encountered when introducing such simulators into curricula are also discussed. FEM-based approaches still do not permit real-time computation but hybrid approaches as proposed by [1] may become a good compromise. Nonetheless, psychophysical studies should be performed to determine the haptic fidelity of the various approaches found in the literature, and embed them efficiently in medical curricula. This would permit to delay the necessary final hands-on training on patients that raises ethical issues.

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“…In fact, many institutions preferred home‐made alternatives for their studies, utilising food or animal products, since they are low cost and easy to make. Turkey or chicken breast, as well as gel‐based tissue‐mimicking phantoms are commonly used to simulate soft tissue 33 . The inserts could be of liquid or solid content depending on the type of biopsy procedure that will be followed.…”

Section: Introductionmentioning

confidence: 99%

“…The inserts could be of liquid or solid content depending on the type of biopsy procedure that will be followed. For freehand US‐guided breast biopsy training, raw materials including olives with pimentos, grapes, capers, strawberries, peas and potatoes have been proposed in the literature as tumour mimics 33 …”

Section: Introductionmentioning

confidence: 99%

Phantom‐based assessment of motion and needle targeting accuracy of robotic devices for magnetic resonance imaging‐guided needle biopsy

Antoniou,

Nikolaou,

Evripidou

et al. 2023

Robotics Computer Surgery

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BackgroundThe current study proposes simple methods for assessing the performance of robotic devices intended for Magnetic Resonance Imaging (MRI)‐guided needle biopsy.MethodsIn‐house made agar‐based breast phantoms containing biopsy targets served as the main tool in the evaluation process of an MRI compatible positioning device comprising a needle navigator. The motion accuracy of mechanical stages was assessed by calliper measurements. Laboratory evaluation of needle targeting included a repeatability phantom test and a laser‐based method. The accuracy and repeatability of needle targeting was also assessed by MRI.ResultsThe maximum error of linear motion for steps up to 10 mm was 0.1 mm. Needle navigation relative to the phantom and alignment with the various biopsy targets were performed successfully in both the laboratory and MRI settings. The proposed biopsy phantoms offered tissue‐like signal in MRI and good haptic feedback during needle insertion.ConclusionsThe proposed methods could be valuable in the process of validating the accuracy of MRI‐guided biopsy robotic devices in both laboratory and real environments.

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Low-Cost and Easily Fabricated Ultrasound-Guided Breast Phantom for Breast Biopsy Training

Cited by 15 publications

References 29 publications

Biomechanically Compliant Gynecologic Training Simulator

Biomechanically Compliant Gynecologic Training Simulator

Review on Needle Insertion Haptic Simulation

Phantom‐based assessment of motion and needle targeting accuracy of robotic devices for magnetic resonance imaging‐guided needle biopsy

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