Evaluation of an intraoperative ultrasound training model based on a cadaveric sheep brain

Vavruska, Jan; Buhl, Ralf; Petridis, Athanasios K.; Maslehaty, Homajoun; Scholz, Martin

doi:10.4103/2152-7806.130314

Cited by 6 publications

(4 citation statements)

References 19 publications

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“…To aid certain approaches to such a pathology, intraoperative ultrasound is frequently used to assess the position of the tumour. Training in this regard has been explored by Vavruska et al [18], who evaluated the sheep brain with a transducer and identified similar structures to the human brain.…”

Section: Ovine Modelsmentioning

confidence: 99%

Neurosurgical cadaveric and in vivo large animal training models for cranial and spinal approaches and techniques — a systematic review of the current literature

Morosanu

Nicolae

Moldovan

et al. 2018

Neurol Neurochir Pol.

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Introduction. Due to its high complexity, neurosurgery consists of a demanding learning curve that requires intense training and a deep knowledge of neuroanatomy. Microsurgical skill development can be achieved through various models of simulation, but as human cadaveric models are not always accessible, cadaveric animal models can provide a reliable environment in which to enhance the acquisition of surgical dexterity. The aim of this review was to analyse the current role of animal brains in laboratory training and to assess their correspondence to the procedures performed in humans. Material and methods. A Pubmed literature search was performed to identify all the articles concerning training cranial and spinal techniques on large animal heads. The search terms were 'training model' , and 'neurosurgery' in association with 'animal' , 'sheep' , 'cow' , and 'swine'. The exclusion criteria were articles that were on human brains, experimental fundamental research, or on virtual simulators. Results. The search retrieved 119 articles, of which 25 were relevant to the purpose of this review. Owing to their similar neuroanatomy, bovine, porcine and ovine models prove to be reliable structures in simulating neurosurgical procedures. On bovine skulls, an interhemispheric transcalosal and retrosigmoid approach along with different approaches to the Circle of Willis can be recreated. Ovine model procedures have varied from lumbar discectomies on sheep spines to craniosynostosis surgery, whereas in ex vivo swine models, cadaveric dissections of lateral sulcus, median and posterior fossa have been achieved. Conclusions. Laboratory training models enhance surgical advancements by familiarising trainee surgeons with certain neuroanatomical structures and promoting greater surgical dexterity. The accessibility of animal brains allows trainee surgeons to exercise techniques outside the operating theatre, thus optimising outcomes in human surgical procedures.

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Section: Ovine Modelsmentioning

confidence: 99%

Neurosurgical cadaveric and in vivo large animal training models for cranial and spinal approaches and techniques — a systematic review of the current literature

Morosanu

Nicolae

Moldovan

et al. 2018

Neurol Neurochir Pol.

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“…In contrast, excessive prolongation of surgical time during intraoperative training can lead to increased intraoperative morbidity. These observations are consistent with previous reports from a German group that proposed to train neurosurgeons with sonography using cadaveric sheep brains (Vavruska et al, ).…”

Section: Discussionmentioning

confidence: 99%

Brain ultrasound rehearsal before surgery: A pilot cadaver study

et al. 2017

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It has been shown that brain ultrasonography (US) is an efficient tool for improving three-dimensional (3D) spatial orientation during neurosurgical interventions. However, it necessitates specific training as it is highly operator-dependent. To date, neurosurgeons have relied solely on intraoperative practice to improve their mastery of brain US; this has obvious limitations. Herein, we consider whether a study of brain US on human cadavers could enable a training platform for neurosurgeons and residents to be developed. Standard two-dimensional (2D) brain US was performed on two human cadavers (one fresh-frozen and one Thiel-prepared) through left frontoparietal, left frontal, right temporal, and left parietal craniotomies. US workflow and image quality were assessed in both preparations. It was possible to assess US in both cadaver preparations; however, the specimen prepared with Thiel-fixation performed better, with superior image quality and specimen usability at room temperature. US images were obtainable through all surgical corridors with the main intracranial anatomical landmarks easily identifiable. US of cadaveric brains is feasible and delivers good quality results. This technique could allow neurosurgeons to develop the expertise required for a successful clinical application preoperatively. Clin. Anat. 30:1017-1023, 2017. © 2017 Wiley Periodicals, Inc.

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“…Recent IOUS simulation methods e.g. “virtual probes” ( 82 ) or IOUS-simulation smartphone applications ( 82 ), and practice on phantom ( 83 ) or animal ( 84 ) models under supervision of expert sonographers are recommended in order to refine scanning and surgical techniques ( 1 ). As showed recently by group of DiMeco, current high-end 2D IOUS systems integrated with neuronavigation may be in experienced hands of a significant benefit in terms of both extent of brain tumor resections and neurological outcomes ( 85 ).…”

Section: Future Perspectivesmentioning

confidence: 99%

Current Limitations of Intraoperative Ultrasound in Brain Tumor Surgery

et al. 2021

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While benefits of intraoperative ultrasound (IOUS) have been frequently described, data on IOUS limitations are relatively sparse. Suboptimal ultrasound imaging of some pathologies, various types of ultrasound artifacts, challenging patient positioning during some IOUS-guided surgeries, and absence of an optimal IOUS probe depicting the entire sellar region during transsphenoidal pituitary surgery are some of the most important pitfalls. This review aims to summarize prominent limitations of current IOUS systems, and to present possibilities to reduce them by using ultrasound technology suitable for a specific procedure and by proper scanning techniques. In addition, future trends of IOUS imaging optimization are described in this article.

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Evaluation of an intraoperative ultrasound training model based on a cadaveric sheep brain

Cited by 6 publications

References 19 publications

Neurosurgical cadaveric and in vivo large animal training models for cranial and spinal approaches and techniques — a systematic review of the current literature

Neurosurgical cadaveric and in vivo large animal training models for cranial and spinal approaches and techniques — a systematic review of the current literature

Brain ultrasound rehearsal before surgery: A pilot cadaver study

Current Limitations of Intraoperative Ultrasound in Brain Tumor Surgery

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