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José Américo Nabuco Leva Ferreira de Freitas, Fernanda Dos Santos Costa Leomil, Marcelo Zoccoler, Priscila Correia Antoneli, Pedro Xavier de Oliveira
Multidirectional defibrillation protocols have shown better efficiency than monodirectional; still, no testing was performed to assess cell lethality. We investigated lethality of multidirectional defibrillator-like shocks on isolated cardiomyocytes. Cells were isolated from adult male Wistar rats and plated into a perfusion chamber. Electrical field stimulation threshold (ET ) was obtained, and cells were paced with suprathreshold bipolar electrical field (E) pulses. Either one monodirectional high-intensity electrical field (HEF) pulse aligned at 0° (group Mono0) or 60° (group Mono60) to cell major axis or a multidirectional sequence of three HEF pulses aligned at 0°, 60°, and 120° each was applied...
May 30, 2018: Medical & Biological Engineering & Computing
Dong Sun Shin, Sang Kyu Park
For the purposes of virtual surgery, medical education, medical communication, and realistic surface models of anatomic structures are required. In the most involved method, surface models can be made using segmentation and three-dimensional reconstruction procedures. Such models, however, are computationally expensive, and can be difficult to use. Therefore, optimization is often performed manually, but this is a time-consuming job that requires considerable artistic talent. In this article, the authors describe a method that uses Maya and ZBrush to construct optimized surface models of anatomic structures...
March 2016: Journal of Craniofacial Surgery
Christian Petropolis, Daniel Kozan, Leif Sigurdson
BACKGROUND: Additive manufacturing using fused deposition modelling (FDM) has become widely available with the development of consumer-grade three-dimensional printers. To be useful in maxillofacial surgery, models created by these printers must accurately reproduce the craniofacial skeleton. OBJECTIVE: To determine the accuracy of consumer-grade FDM printers in the production of medical models compared with industrial selective laser sintering (SLS) printers. METHODS: Computed tomography images of a dry skull were manipulated using OsiriX (OsiriX, Switzerland) and ZBrush (Pixologic, USA) software...
2015: Plastic Surgery
Kaitlin E Lindsay, Frank J Rühli, Valerie Burke Deleon
The technique of forensic facial approximation, or reconstruction, is one of many facets of the field of mummy studies. Although far from a rigorous scientific technique, evidence-based visualization of antemortem appearance may supplement radiological, chemical, histological, and epidemiological studies of ancient remains. Published guidelines exist for creating facial approximations, but few approximations are published with documentation of the specific process and references used. Additionally, significant new research has taken place in recent years which helps define best practices in the field...
June 2015: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
J A Pérez-Carrasco, B Acha, T Gómez-Cia, R A Lopez-Garcia, Carlos Delgado, C Serrano
Lipodystrophy is a pathological condition characterized by the focal or general absence of adipose tissue. Surgeons reset the patient's surface contours using injectable materials to recreate a normal physical appearance. However, due to difficulties in preoperative planning and intraoperative assessment, about 15% of the surgical procedures involved are reinterventions to improve volume or symmetry. This increases the need for an available, efficient tool capable of providing the surgeon with a good estimation of the volumes to be injected before the intervention proper begins...
March 2015: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
C Peirce, M Burton, I Lavery, R P Kiran, D J Walsh, P Dockery, J C Coffey
BACKGROUND: The aim of the present study was to develop a unique anatomic replica of the mesocolon using digital graphical software in order to provide an educational template for mesosigmoidectomy. METHODS: The colon and mesocolon were fully mobilized from ileocecal to mesorectal levels in a cadaver. Both colon and mesocolon provided a template from which to generate a three dimensional replica in ZBrush. The model was deformed in ZBrush, to compare and contrast current and classic interpretations of mesosigmoidal topography...
July 2014: Techniques in Coloproctology
Tim Vernon
No abstract text is available yet for this article.
March 2011: Journal of Visual Communication in Medicine
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