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PubMed1992

[Comparison of fingerprints using a personal computer and graphic software sold on market].

We compared the fingerprint images using a personal computer and a graphic software sold on market. The fingerprints of thumb of left hand recorded by pressing and rolling on paper were input in computer using image scanner. These two fingerprint images were overlapped by moving and rotation on the computer screen, and were fitted well. This result showed that the fingerprints recorded by any way from one person were fitted. Latent and accused's fingerprints were also input in computer using image scanner. These images were analyzed by the same procedure. These two fingerprints were part by unfitting. It was decided these two fingerprints were not derived from one person. We also considered the possibility that the latent fingerprint was the reversed one. Then, the image was reversed of its color on the screen of computer (black to white and white to black) and compared by the same procedure. In this experiment, two fingerprint images were not fitted in a part. This showed that the reversed fingerprint was also able to be analyzed by this procedure. For the comparison of fingerprints, this report showed the ability of the personal computer and software which can be obtained easily from market. Following the improvement of the hardware and software used in this examination in near future, the computerized identification of fingerprints like this study will become more accurate and convenient.

Computer Graphics↗

PubMed1989

[Guide to a new data base system of literatures on dental materials and devices. Off-line retrieval system using commercially available software for data base management].

This article describes the off-line retrieval systems for the data base file of literatures on dental materials and devices which was constructed by the Japanese Society for Dental Materials and Devices. The off-line systems employed two kinds of commercially available softwares for data base management on a personal computer. The data base file was stored in the large-scale computer and downloaded into MS-DOS text files. They were supplied through floppy disks. A program was developed for converting the text files into coded data format which could be transmitted to the applied software. The converted data base files could be successfully processed with two commercial softwares for data base management on a personal computer.

Databases, Bibliographic↗

PubMed1990

Experience with gated cardiac software phantoms for quality control of applications programmes.

Ten gated cardiac software phantoms, representing normal and abnormal clinical conditions, were transferred to 9 different computer systems and tested with 11 cardiac programmes. Problems of inappropriate data format were encountered when analysing the phantoms on other systems. The global left ventricular ejection fraction (LVEF) values resulting from the different programmes were compared. Significant programme differences were found, the programmes falling generally into two groups. Few LVEF outlier values were identified. Full functional assessment of cardiac phantoms requires a set of different views which together form the phantom. Application of software phantoms for programme assessment and training requires prudence and attention to the acquired data format, frame time, and gating method for the appropriate use of phantoms.

Computer Simulation↗

PubMed1990

A parallel software architecture for building intelligent medical monitors.

Intensive care units become more complicated each day as the number of devices developed to monitor various aspects of a patient's status continues to increase. Intelligent monitors attempt to reduce this complexity by interpreting the data and presenting a high level summary to the clinician. We propose an innovative parallel software architecture for constructing intelligent medical monitors: the process trellis. The process trellis is an explicitly parallel structure, and therefore can take advantage of the performance gains available from parallel computing hardware. It does not, however, presuppose any expertise in parallel programming on the part of the application programmer. A prototype cardiovascular monitor has been built using this parallel software architecture. Preliminary testing of the monitor has shown that real-time cardiovascular monitoring, including data calculations, symbolic classification, and interpretation can be accomplished in real-time.

Expert Systems↗

PubMed1990

Development of software for pulse oximeter and investigation of its realtime response in clinical environment.

We developed a pulse oximeter software at Thorax Centre, Erasmus University as a joint project with an industry and evaluated it in the clinical environment of thorax anaesthesia using a computerized protocol for realtime data collection during routine clinical procedures. This paper gives an account of the results we obtained from the development project and the clinical study. The paper consists of two parts. First part describes different components of the software module and their influence on different aspects of the clinical behaviour of the oximeter. The second part describes the results of realtime response investigation. The investigation was carried out using a personal computer to collect the data continuously during anaesthesia, surgery and post-operative periods. Two other industry standard oximeters, Nellcor and Ohmeda were also included in our study. We collected data on more than fifty patients on an average of eight hours per patient over a period of four months with major emphasis on low-saturation occurrences. The interpretation of the data was focused more on the realtime response anomalies on random cases than on ensemble statistical data evaluation. We found, that there are few factors in clinical environment which often influences the measurement of a pulse oximeter very strongly. Most often the anomalies were found during low saturation measurement. The main objective of this paper is to make the results available to practising clinicians so that it may be useful to identify these occurrences during routine clinical usage.

Evaluation Studies as Topic↗

PubMed1991

MACSPEC--a software system for fully automatic processing and analysis of large series of NMR spectra.

In vivo NMR spectroscopy often accumulates a large number of spectra (typically 100 individual files or even more) to follow metabolic changes with high time-resolution. The analysis of these spectra is very time-consuming for the spectroscopist and, furthermore, it requires the spectrometer's computer, needed for control of experiments. Here we report the software system MACSPEC developed for automatic processing and analysis of large series of individual NMR spectra on a peripheral personal computer. With this software the spectrometer's computer is kept available for experiments, and the necessary interaction of the spectroscopist is limited to a definition of the processing conditions at the beginning of the data analysis.

Electronic Data Processing↗

PubMedDate not supplied

A PC-based 3D imaging system: algorithms, software, and hardware considerations.

Three-dimensional (3D) imaging in medicine is known to produce easily and quickly derivable medically relevant information, especially in complex situations. We intend to demonstrate in this paper, that with an appropriate choice of approaches and a proper design of algorithms and software, it is possible to develop a low-cost 3D imaging system that can provide a level of performance sufficient to meet the daily case load in an individual or even group-practice situation. We describe hardware considerations of a generic system and give an example of a specific system we used for our implementation. Given a 3D image as a stack of slices, we generate a packed binary cubic voxel array, by combining segmentation (density thresholding), interpolation, and packing in an efficient way. Since threshold-based segmentation is very often not perfect, object-like structures and noise clutter the binary scene. We utilize an effective mechanism to isolate the object from this clutter by tracking a specified, connected surface of the object. The surface description thus obtained is rendered to create a depiction of the surface on a 2D display screen. Efficient implementation of hidden-part removal and image-space shading and a simple and fast antialiasing technique provide a level of performance which otherwise would not have been possible in a PC environment. We outline our software emphasizing some design aspects and present some clinical examples.

Algorithms↗

PubMed2024

GRable Version 1.0: A Software Tool for Site-Specific Glycoform Analysis With Improved MS1-Based Glycopeptide Detection With Parallel Clustering and Confidence Evaluation With MS2 Information.

High-throughput intact glycopeptide analysis is crucial for elucidating the physiological and pathological status of the glycans attached to each glycoprotein. Mass spectrometry-based glycoproteomic methods are challenging because of the diversity and heterogeneity of glycan structures. Therefore, we developed an MS1-based site-specific glycoform analysis method named "Glycan heterogeneity-based Relational IDentification of Glycopeptide signals on Elution profile (Glyco-RIDGE)" for a more comprehensive analysis. This method detects glycopeptide signals as a cluster based on the mass and chromatographic properties of glycopeptides and then searches for each combination of core peptides and glycan compositions by matching their mass and retention time differences. Here, we developed a novel browser-based software named GRable for semi-automated Glyco-RIDGE analysis with significant improvements in glycopeptide detection algorithms, including "parallel clustering." This unique function improved the comprehensiveness of glycopeptide detection and allowed the analysis to focus on specific glycan structures, such as pauci-mannose. The other notable improvement is evaluating the "confidence level" of the GRable results, especially using MS2 information. This function facilitated reduced misassignment of the core peptide and glycan composition and improved the interpretation of the results. Additional improved points of the algorithms are "correction function" for accurate monoisotopic peak picking; one-to-one correspondence of clusters and core peptides even for multiply sialylated glycopeptides; and "inter-cluster analysis" function for understanding the reason for detected but unmatched clusters. The significance of these improvements was demonstrated using purified and crude glycoprotein samples, showing that GRable allowed site-specific glycoform analysis of intact sialylated glycoproteins on a large-scale and in-depth. Therefore, this software will help us analyze the status and changes in glycans to obtain biological and clinical insights into protein glycosylation by complementing the comprehensiveness of MS2-based glycoproteomics. GRable can be freely run online using a web browser via the GlyCosmos Portal (https://glycosmos.org/grable).

Glycopeptides↗

PubMed1991

Building structural models of peptides: a semi-automatic software.

We present a software package that allows the construction and display of structural models of proteins starting from the amino acid sequence written in the one-letter code of standard data bank format. The software includes a very fast and efficient algorithm aimed at finding the global energy minimum of the potential function describing the molecular interactions. The whole package is conceived to have maximum flexibility. Completely automatic procedures are envisaged for standard problems. For non-standard problems, the construction procedure can be interactively adopted to meet with different options.

Algorithms↗

PubMedDate not supplied

Rapid prototyping of interactive software for automated instrumentation in rehabilitative therapy.

Rapid prototyping is a quick, efficient way to evaluate new electrical instruments. A hardware interface between a computer and an instrument can be simulated in software. The authors demonstrate the technique of rapid prototyping by developing interfaces for two therapeutic strength-testing devices and an electromagnetic tracker/digitizer. The LabVIEW rapid prototyping software tool was used to create "virtual instruments," which combine to form interfaces. The functions and connections of each virtual instrument are described.

Equipment Design↗

PubMed1992

Microcomputers and database software for monitoring quality assurance activities.

A description of how one community hospital implemented a successful quality assurance program in radiology with the use of a personal computer and relational database management software is presented. The system has been well received and is easy to use and maintain. There are aspects of quality assurance beyond the double-reading method that are not addressed by this system. However, as we learn more about different quality assurance programs, the system has the capacity to evolve. The advertising literature is flooded with information about software packages that claim to meet all Joint Commission quality assurance requirements. Therefore, it is prudent to avoid making hasty purchasing decisions to accomplish a quick-fix solution to managing quality assurance activities. The Joint Commission recommends a systematic approach to defining needs and evaluating vendor products or services.

Database Management Systems↗

PubMed1990

A software package for event related potential experiments.

All too frequently, researchers find that experimental designs are dictated by procedures implemented by the available equipment rather than by the questions to be answered. Event related potential experiments are limited by equipment which restricts the type and number of stimuli which can be presented and the length, number, and type of averages which can be computed. A software package was developed for event related potential experiments which provides a high degree of flexibility in designing the stimulus presentation protocol and the averages which can be computed. The package includes a set of user friendly programs for constructing complicated stimulus presentation sequences. In order not to restrict the researcher to a set of predetermined averages computed at the time the experiment is conducted, the EEG data is digitized and stored continuously without regard to times of stimulus presentation. Averages are computed from the continuous EEG data by a separate averaging program which takes as input a table of starting times of the segments to be averaged. The software package is currently in use at Dr. Rohrbaugh's laboratory for a series of complicated event related potential experiments.

Analog-Digital Conversion↗

PubMed1991

Slide presentation graphics using a personal computer. A comparative evaluation of available software.

Most of the available methods for preparing professional slides to be used in oral presentations can be cumbersome, time-consuming, and expensive. Creating high-quality 35-mm slides may require the use of expensive medical illustrators and photographic equipment not available to all physicians. More recently, technology has emerged that permits professional in-office generation of quality slides using commercially available computer graphics software and film recorders. Such a system is simple to establish and maintain when compared with commercial slide production facilities. We will review the hardware requirements of such a system, as well as the advantages and disadvantages of several commercially available software packages. Using a personal computer-based slide-making system, any physician communicating with small or large groups of people can now produce professional-looking slides easily, rapidly, and inexpensively.

Audiovisual Aids↗

PubMed1990

Inpatient admission system model using SIMAN software.

In this paper a simulation model is developed as a tool to describe the behavior of the inpatient admission system in a hospital. Due to difficulties involved in the self-development or vendor approach to model such a complex system, the author uses SIMAN software to develop a simulation model for the inpatient admission system. To most hospitals, advantages are gained in terms of reduced purchasing and maintenance cost, and ease of use, as this software can run on any personal computer.

Admitting Department, Hospital↗

PubMed1991

Advantages and limitations of two software calipers in quantitative coronary arteriography.

Software calipers allowing the measurement of the distances between pairs of manually defined picture elements in digitized images may be useful tools for a rapid assessment of the morphology of coronary vessels, e.g. for choosing the appropriate balloon or stent sizes before or during cardiac intervention procedures. In this paper we have studied extensively the advantages and limitations of two manual software calipers--one developed for a PC-based cinefilm analysis workstation, the other for the Philips DCI system. Based on analyses of a perspex vessel phantom with 17 sectors of known size filled with different concentrations (50 and 100%) of the contrast agent and acquired at two kV-levels (68 and 92 kV), it was found that the cinefilm approach is characterized by a very small overall (averaged over te data from three observers) systematic overestimation of 0.03 mm, and the DCI system by a systematic underestimation of 0.07 mm; the worst case accuracy value for an individual observer on frames with 100% contrast dye concentration was 0.20 mm for cinefilm, and -0.34 mm for the DCI, respectively. The overall variabilities in the measurements (precision) were almost identical for the two approaches (overall 0.07 and 0.08 mm for the cinefilm and digital approaches, respectively, and worst case for individual observers on the 100% contrast frames, 0.16 and 0.13 mm, respectively. Inverting the images (bright or dark contrast containing structures) of the phantom at 100% contrast concentration and acquired at 62 kV had no significant effect on the results obtained with the cinefilm analysis system (overall accurary -0.12 mm for both situations), whereas it had on the results from the DCI system (overall accuracies -0.29 (dark vessels on bright background) and -0.08 mm (bright vessels on dark background), respectively). Enhancing the digital images on the DCI with unsharp masking techniques did not significantly influence the measurement accuracy and precision. Finally, it was found that woven dacron, polyurethane and polyvinylchloride catheters filled with 100% contrast dye can be measured with an overall accuracy of better than 0.13 mm on the DCI system. On the PC-based system the woven dacron and polyvinylchloride catheters would result in an overall accuracy better than 0.17 mm, and the polyurethane catheter better than 0.30 mm. The evaluation study has made clear that the nylon catheter should not be applied in QCA-studies.(ABSTRACT TRUNCATED AT 250 WORDS)

Cardiac Catheterization↗

PubMed1992

SPACAR: a software subroutine package for simulation of the behavior of biomechanical systems.

Direct dynamics computer simulation is gaining importance as a research tool in the biomechanical study of complex human movements. Therefore, the need for general-purpose software packages with which the equations of motion can be derived automatically and solved numerically is growing. In this paper such a method is described: SPACAR. The method is compared to well-known commercially available software packages. On the basis of the results obtained on a test problem simulated with both SPACAR and DADS, it is concluded that both methods are accurate; DADS is much faster. The user-friendliness of SPACAR is less than that of DADS. However, SPACAR has two major advantages. First is the basic deformability of all elements, which allows handling of all kinds of problems within a unified framework; second is the full availability of the source code, which allows the experienced user to broaden the scope of possibilities to any extent.

Biomechanical Phenomena↗

PubMed1990

Applications of the EVE software for visual modeling.

EVE, the Early Vision Emulation software, is a system for the stimulation of early visual processing. EVE has the ability to carry out the operations of a wide variety of models of spatial vision, motion detection and processing, and spatial sampling. We introduce the EVE software and illustrate some of its applications for models of pattern detection, pattern discrimination, and motion detection.

Humans↗

PubMed1991

A software for the elaboration of job histories.

This article presents a software designed to help the occupational physician elaborate, print and automatically interrogate the job histories of workers. The need for the surveillance of professional risks throughout careers is the basic assumption on which this software is based and it runs on a PC.

Forms and Records Control↗