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B Anderhub

Publications and source records attributed to B Anderhub.

4 recordsLinked to original sources
PubMed1997

The tradeoffs of successful simulation.

This presentation will discuss the decision process we followed to develop an ultrasound simulator. The development of an advanced technology medical device always requires tradeoffs and compromises between what is desired, and what can be realistically achieved. The medical applications of computer based education are increasingly important to the process of medical education. Product developers will be required to address these concerns. Some tradeoffs result from technical, scientific, and engineering factors; while others are the result of marketing, financial, or competitive constraints. All of these factors will influence the design and production of simulation tools. A manager, scientist, or engineer who is involved in development of this kind of innovative product may be helped by considering the impact of some of these decisions earlier in the process. Forewarned is fore-armed. The most basic design issue we faced was the conflict between the requirements we envisioned for the ultrasound simulator, and the limitations of realistic simulation. Our goal was to achieve a product which would be affordable to the academic institutions who would be using it. Simulation will be defined and presented with examples from our experience.

Biomedical Engineering↗
PubMed1977

A comparison of typing methods for Serratia marcescens.

A simple method for the bacteriocine typing of Serratia marcescens without the use of induction was sought. The results of a mutual inhibition experiment with 89 unrelated cultures indicated that a bacteriocine-susceptibility method would give more discrimination between strains than would a bacteriocine-production method. A cross-streaking technique for bacteriocine-susceptibility typing without previous induction was developed, and its performance was compared with that of another susceptibility-typing method in which cell-free lysates of the producer strains were obtained by induction with mitomycin C.Replicate typing of the same collection of cultures by both methods indicated that small variations in pattern were common and that larger variations occurred occasionally. Differences in pattern of less than two strong reactions in the mitomycin-C induction method, and of less than three strong reactions in the cross-streaking method, should therefore not be taken as evidence that strains can be distinguished.Sets of cultures of Ser. marcescens, 178 in total, from a number of supposed incidents of infection in hospitals, were used to evaluate the two bacteriocine-typing methods; all of the cultures were also O serogrouped. Comparison of the typing patterns of members of the same O serogroup from clear-cut incidents of infection confirmed that results of acceptable reliability could be obtained by either bacteriocine-typing method by the application of the appropriate ;difference' rule. When so interpreted, the cross-streaking method appeared to be slightly the more discriminatory.The greatest discrimination between strains was obtained by the use of a ;hierarchical' typing system in which the strains were first O serogrouped, and the cross-streaking method of bacteriocine typing was then used to make subdivisions within O serogroups.

Bacteriocins↗
PubMedDate not supplied

Introduction to diagnostic ultrasound--new horizons for radiologic technologists.

Ultrasound technology has steadily advanced in the past decade, and has established itself as a useful diagnostic tool. Many radiologic technologists may like to know more about the fundamentals of this field. This article explains briefly the basic instrumentation, modes of display and some of the common examinations performed in ultrasound technology.

Female↗