scholarly journals An Extensible Orthopedic Wire Navigation Simulation Platform

2019 ◽  
Vol 13 (3) ◽  
Author(s):  
Steven Long ◽  
Geb W. Thomas ◽  
Donald D. Anderson

The demand for simulation-based skills training in orthopedics is steadily growing. Wire navigation, or the ability to use 2D images to place an implant through a specified path in bone, is an area of training that has been difficult to simulate given its reliance on radiation-based fluoroscopy. Our group previously presented on the development of a wire navigation simulator for a hip fracture module. In this paper, we present a new methodology for extending the simulator to other surgical applications of wire navigation. As an example, this paper focuses on the development of an iliosacral wire navigation simulator. We define three criteria that must be met to adapt the underlying technology to new areas of wire navigation; surgical working volume, system precision, and tactile feedback. The hypothesis being that techniques, which fall within the surgical working volume of the simulator, demand a precision less than or equal to what the simulator can provide, and that require the tactile feedback offered through simulated bone can be adopted into the wire navigation module and accepted as a valid simulator for the surgeons using it. Using these design parameters, the simulator was successfully configured to simulate the task of drilling a wire for an iliosacral screw. Residents at the University of Iowa successfully used this new module with minimal technical errors during use.

Author(s):  
Kenneth C. Moore

The University of Iowa Central Electron Microscopy Research Facility(CEMRF) was established in 1981 to support all faculty, staff and students needing this technology. Initially the CEMRF was operated with one TEM, one SEM, three staff members and supported about 30 projects a year. During the past twelve years, the facility has replaced all instrumentation pre-dating 1981, and now includes 2 TEM's, 2 SEM's, 2 EDS systems, cryo-transfer specimen holders for both TEM and SEM, 2 parafin microtomes, 4 ultamicrotomes including cryoultramicrotomy, a Laser Scanning Confocal microscope, a research grade light microscope, an Ion Mill, film and print processing equipment, a rapid cryo-freezer, freeze substitution apparatus, a freeze-fracture/etching system, vacuum evaporators, sputter coaters, a plasma asher, and is currently evaluating scanning probe microscopes for acquisition. The facility presently consists of 10 staff members and supports over 150 projects annually from 44 departments in 5 Colleges and 10 industrial laboratories. One of the unique strengths of the CEMRF is that both Biomedical and Physical scientists use the facility.


2016 ◽  
Vol 1 (5) ◽  
pp. 4-12
Author(s):  
David P. Kuehn

This report highlights some of the major developments in the area of speech anatomy and physiology drawing from the author's own research experience during his years at the University of Iowa and the University of Illinois. He has benefited greatly from mentors including Professors James Curtis, Kenneth Moll, and Hughlett Morris at the University of Iowa and Professor Paul Lauterbur at the University of Illinois. Many colleagues have contributed to the author's work, especially Professors Jerald Moon at the University of Iowa, Bradley Sutton at the University of Illinois, Jamie Perry at East Carolina University, and Youkyung Bae at the Ohio State University. The strength of these researchers and their students bodes well for future advances in knowledge in this important area of speech science.


2008 ◽  
Vol 18 (3) ◽  
pp. 119-125
Author(s):  
Sarah Klemuk

Abstract Collaborative studies at the University of Iowa and the National Center for Voice and Speech aim to help the voices of teachers. Investigators study how cells and tissues respond to vibration doses simulating typical vocalization patterns of teachers. A commercially manufactured instrument is uniquely modified to support cell and tissue growth, to subject tissues to vocalization-like forces, and to measure viscoelastic properties of tissues. Through this basic science approach, steps toward safety limits for vocalization and habilitating rest periods for professional voice users will be achieved.


2013 ◽  
Vol 17 (1) ◽  
pp. 25-42 ◽  
Author(s):  
James P. Pusack

2018 ◽  
Author(s):  
Tamer Abdel Moaein ◽  
Chirsty Tompkins ◽  
Natalie Bandrauk ◽  
Heidi Coombs-Thorne

BACKGROUND Clinical simulation is defined as “a technique to replace or amplify real experiences with guided experiences, often immersive in nature, that evoke or replicate substantial aspects of the real world in a fully interactive fashion”. In medicine, its advantages include repeatability, a nonthreatening environment, absence of the need to intervene for patient safety issues during critical events, thus minimizing ethical concerns and promotion of self-reflection with facilitation of feedback [1] Apparently, simulation based education is a standard tool for introducing procedural skills in residency training [3]. However, while performance is clearly enhanced in the simulated setting, there is little information available on the translation of these skills to the actual patient care environment (transferability) and the retention rates of skills acquired in simulation-based training [1]. There has been significant interest in using simulation for both learning and assessment [2]. As Canadian internal medicine training programs are moving towards assessing entrustable professional activities (EPA), simulation will become imperative for training, assessment and identifying opportunities for improvement [4, 5]. Hence, it is crucial to assess the current state of skill learning, acquisition and retention in Canadian IM residency training programs. Also, identifying any challenges to consolidating these skills. We hope the results of this survey would provide material that would help in implementing an effective and targeted simulation-based skill training (skill mastery). OBJECTIVE 1. Appraise the status and impact of existing simulation training on procedural skill performance 2. Identify factors that might interfere with skill acquisition, consolidation and transferability METHODS An electronic bilingual web-based survey; Fluid survey platform utilized, was designed (Appendix 1). It consists of a mix of closed-ended, open-ended and check list questions to examine the attitudes, perceptions, experiences and feedback of internal medicine (IM) residents. The survey has been piloted locally with a sample of five residents. After making any necessary corrections, it will be distributed via e-mail to the program directors of all Canadian IM residency training programs, then to all residents registered in each program. Two follow up reminder e-mails will be sent to all participating institutions. Participation will be voluntarily and to keep anonymity, there will be no direct contact with residents and survey data will be summarized in an aggregate form. SPSS Software will be used for data analysis, and results will be shared with all participating institutions. The survey results will be used for display and presentation purposes during medical conferences and forums and might be submitted for publication. All data will be stored within the office of internal medicine program at Memorial University for a period of five years. Approval of Local Research Ethics board (HREB) at Memorial University has been obtained. RESULTS Pilot Results Residents confirmed having simulation-based training for many of the core clinical skills, although some gaps persist There was some concern regarding the number of sim sessions, lack of clinical opportunities, competition by other services and lack of bed side supervision Some residents used internet video to fill their training gaps and/or increase their skill comfort level before performing clinical procedure Resident feedback included desire for more corrective feedback, and more sim sessions per skill (Average 2-4 sessions) CONCLUSIONS This study is anticipated to provide data on current practices for skill development in Canadian IM residency training programs. Information gathered will be used to foster a discourse between training programs including discussion of barriers, sharing of solutions and proposing recommendations for optimal use of simulation in the continuum of procedural skills training.


1986 ◽  
Vol 1 (2) ◽  
pp. 108-122 ◽  
Author(s):  
Nancy C. Andreasen ◽  
William M. Grove

SummaryMost investigators concur that schizophrenia is probably a heterogeneous group of disorders that share the common features of psychotic symptoms, partial response to neuroleptics, and a relatively poor outcome. The subdivision of schizophrenia into two subtypes, positive versus negative, has achieved wide acceptance throughout the world during recent years. This distinction has heuristic and theoretical appeal because it unites phenomenology, pathophysiology, and etiology into a single comprehensive hypothesis.In spite of its wide appeal, the distinction has a number of problems. These include the failure to distinguish between symptom syndromes and diseases; failure to deal with the mixed patient; failure to take longitudinal course into account; and failure to address conceptually and methodologically the distinction between positive and negative symptoms.This paper focuses primarily on the conceptual basis for two instruments designed to measure positive and negative symptoms, the Scale for the Assessment of Negative Symptoms (SANS) and the Scale for the Assessment of Positive Symptoms (SAPS), originally described in 1982. Since their description, these scales have been used in a variety of other centers. These scales are based on the hypothesis that negative symptoms represent a deficit or diminution in normal psychological functions wliile positive symptoms represent an excess or distortion of normal functions. Reliability data are now available from Italy, Spain, and Japan which suggest that these scales can be used reliably in cultural settings outside the United States. The results of these studies are summarized in this paper. In addition, a replication study involving a new sample of 117 schizophrenics collected at the University of Iowa is described. In this second study of the SANS and SAPS, internal consistency is found to be quite high in the SANS. Thus negative symptoms appear to be more internally correlated with one another than are positive symptoms. The implications of this result are discussed. A principal components analysis is used to explore the relationship between positive and negative symptoms. While the study reported in 1982 suggested that positive and negative symptoms are negatively correlated, in the present study they appear to be uncorrelated. Overall, the results suggest that the SANS and SAPS are useful comprehensive instruments for the evaluation of positive and negative symptoms. The relationship between these symptoms and external validators such as cognitive functioning or CT scan abnormalities will be reported in a subsequent investigation.


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