An Augmented Reality based Simulation of Obstetric Forceps Delivery

Lapeer, R. J.; Chen, M. S.; Villagrana, J.

doi:10.1109/ismar.2004.13

Cited by 18 publications

(7 citation statements)

References 3 publications

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“…It is very challenging to integrate virtual objects and real world, which needs accurate calibration, advance virtualization and user interfaces [116][117][118]. For current AR magic mirror system, Mirracle, virtual anatomy information is augmented on the user's body and create an illusion that the user can see through their body [107,110,119].…”

Section: Augmented Realitymentioning

confidence: 99%

Virtual Surgery, Applications and Limitations

Kolivand

Tomi

Zamri

et al. 2015

Lecture Notes in Bioengineering

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Virtual Reality (VR) is a widespread topic not only in computer graphics but also in many other fields. In this paper, virtual reality and Augmented Reality (AR) in medicine especially in virtual surgery is taken into consideration. This survey consists of a systematic collection of existing methods and techniques for virtual surgery using Augmented Reality. The motive for doing this study was the current stage of AR technology in virtual surgery. To figure out such problem, this study attempts to critically review the application and limitation of well-known methods to provide researchers with backgrounds on outdated and latest AR technologies in virtual surgery. In this study widely used styles, which have been employed in virtual surgery, is classified and systemized. The direction that each subject is going is introduced. We hope that this study could help researchers to figure out what stage are the current AR researches not only in virtual surgery but also in other parts of medicine.

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Section: Augmented Realitymentioning

confidence: 99%

Virtual Surgery, Applications and Limitations

Kolivand

Tomi

Zamri

et al. 2015

Lecture Notes in Bioengineering

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“…In the first, only visual augmentation is provided in combination with passive haptic feedback from real props or mock-ups. A typical strategy is to overlay anatomical models and/or surgical instruments with annotative visual feedback, e.g., the ProMIS laparoscopic surgery simulator [9] or examples of delivery simulators ( [10], [11]). Another recent example is a training system for needle insertion that combines a physical model of an embedded vessel with augmented images and kinesthetic feedback [12].…”

Section: Augmented Reality and Haptics In Medicinementioning

confidence: 99%

Haptic Tumor Augmentation: Exploring Multi-Point Interaction

Jeon

Harders

2014

IEEE Trans. Haptics

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We currently explore the application of haptic augmentation in the context of palpation training systems. The key idea is to modify real touch sensations with computed haptic feedback. In earlier work, we have introduced an algorithmic framework for determining appropriate augmentation forces during interaction at one contact point. In this paper, we present an extension of the approach to deal with manipulations at more than one contact location. At the heart of our method is the data-driven estimation of Hunt-Crossley model parameters in a pre-computation step. Feeding the parameters into a contact dynamics model allows us to approximate the feedback behavior of various physical tissue mock-ups. Further, we combine the parameter estimation with the tracking of the position of a stiffer inclusion in the mock-up. These data are employed to create a model of movement due to external forces. The combination of these models then allows us to represent and render the mutual effects at multiple contact points. Several experiments have been carried out on a setup with two haptic devices. Comparisons of recorded with simulated interaction data demonstrate the performance and potential of our method.

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“…This model allows evaluation of the biomechanics of fetal head molding using a theoretical model of intra-uterine and head-to-cervix pressures. Moreover in 2004, Lapeer presented an augmented reality-based simulation of an obstetric forceps delivery [24]. This simulation is based on a virtual fetus model obtained from MR (Magnetic Resonance) and CT (Computed Tomography) images, and a real forceps delivery tracked with passive optical markers.…”

Section: State Of the Artmentioning

confidence: 99%

Biomechanical simulation of the fetal descent without imposed theoretical trajectory

Buttin

Zara

Shariat

et al. 2013

Computer Methods and Programs in Biomedicine

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Abstract-The medical training concerning childbirth for young obstetricians involves performing real deliveries, under supervision. This medical procedure becomes more complicated when instrumented deliveries requiring the use of forceps or suction cups become necessary. For this reason, the use of a versatile, configurable childbirth simulator, taking into account different anatomical and pathological cases, would provide an important benefit in the training of obstetricians, and improve medical procedures. The production of this type of simulator should be generally based on a computerized birth simulation, enabling the computation of the reproductive organs of the parturient woman and fetal interactions as well as the calculation of efforts produced during the second stage of labor. However, apart from the commercially available robotized dummy simulators, very few virtual training tools using computational technologies have been developed. Unfortunately, all of these simulators approximate the expulsive forces of childbirth by imposing a pre-computed fetal trajectory. They have rather limited possibilities and would be unlikely to meet the versatility requirements described above. Besides, much research work has been carried out to simulate precisely birth-induced pelvic floor dysfunction and organ prolapse, with damage to levator ani muscles. All these simulators perform a detailed modeling of the levator ani muscles in interaction with a rigid fetal head, at high computational cost. However, they do not take into consideration many pelvic organs involved in the process of childbirth.To reconcile the accuracy of results and computation time, we propose an approach that lies between the two classes of simulator described above in order to perform a realistic simulation of the descent of the fetus through the birth canal. In this paper we present the first stage of this work by focusing on the geometrical and biomechanical modeling of the main organs involved (i. e. the uterus, abdomen and pelvis of the parturient woman interacting with the fetus) based on the laws of continuum mechanics. At this stage, to verify the correctness of our hypothesis, we use finite element analysis, because of its reliability, precision and stability. In sum, our study improves work performed on childbirth simulators because:• our childbirth model takes into account all the major organs involved in birth process, thus enabling many childbirth scenarios to be considered, • fetal head is not treated as a rigid body and its motion is computed by taking into account realistic boundary conditions, i. e. we do not impose a pre-computed fetal trajectory, • we take into account the cyclic uterine contractions as well as voluntary efforts produced by the muscles of the abdomen, • a slight pressure is added inside the abdomen, representing the residual muscle tone.

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An Augmented Reality based Simulation of Obstetric Forceps Delivery

Cited by 18 publications

References 3 publications

Virtual Surgery, Applications and Limitations

Virtual Surgery, Applications and Limitations

Haptic Tumor Augmentation: Exploring Multi-Point Interaction

Biomechanical simulation of the fetal descent without imposed theoretical trajectory

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