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Biomedical subjects

V Tagliasco

Publications and source records attributed to V Tagliasco.

15 recordsLinked to original sources

The use of mini- and micro-computers in eye clinical practice.

In an ophthalmological department there are many sectors in which the use of computers can give useful support. We have singled out three major areas of interest: 1. the rationalization of the flow of patients; 2. the management of clinical records; 3. the automatization of ophthalmological devices. Instead of using different dedicated computational systems we preferred to focus our attention on a unique system based on a minicomputer driving several parallel micro-processors. Preliminary results are given.

Computers

The visual field examination and its automation.

An automated system for examination of the visual fields is described. The entire campimetric examination was simulated in order to enable an in-depth analysis of actual examinations. The program runs on a HP2100 computer with a 16K core. The main advantages of the system are: greater speed, less patient fatigue, greater reliability, repeatability and accuracy.

Diagnosis, Computer-Assisted

[Problems of automated perimetry (author's transl)].

The choice of the most convenient computer, the strategies for stimulus presentation, the fixation control, the presentation of results and the response objectivation are the main problems of automated perimetry, some of which are already solved, others are likely to be solved in the near future. The authors present their experiences on automation of perimetry and indicate future perspectives of this procedure.

Computers

Preliminary results about a new remotely controlled projection campimeter.

A newly remotely controlled projection campimeter is described. The instrument can be remotely controlled either automatically by a minicomputer or manually by an operator. The introduction of the computer allows the elimination of the systematic errors due to the operator. Moreover, the campimeter is enabled to choose the optimal strategy for target presentations. The last task of the computer consists in the memorization of the graphical results, their comparison and their quantification.

Automation

Auditory evoked response: meaningfulness of stimuli and interhemispheric asymmetry.

Interhemispheric asymmetries of different magnitudes were observed in human cortical auditory evoked responses to speech and sound-effect stimuli. The wave with peak asymmetry occurred 100 milliseconds after signal onset. The amount of asymmetry of the amplitude of this wave was related to the meaningfulness to the subject of the auditory stimulus rather than to the mere use of verbal versus nonverbal materials.

Adult

[The role of digital storage in radiological studies based on fluoroscopic technics].

In recording radiological images obtained by fluoroscopic techniques on permanent support, digital storage, when compared with other methods, shows several interesting features, especially in order to reduce the X-ray dose and to allow for using economical hard copies. In the paper a system is described, for which it is possible to predict competitive cost in the near future; such system is based on a 512 X 512 X 6 bits digital memory, continuosly refreshed and on a software package oriented to handle radiological images. Examples of images referring to typical body segments (stomach, skull, chest) are reported.

Analog-Digital Conversion