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At least 19 recordsLinked to original sources
PubMed1992

[A software design for standard grayscale printout of China-made automatic static quantitative TBC visual field analyser].

A method of "TBC GRAPH" software design for standard grayscale printout of TBC static quantitative perimetry is introduced. The software is operated in IBM PC/XT or PC/AT compatible computer, using Chinese Character Disk Operating System (CCDOS) which has widespread users in China. Symbols were established by using CCDOS word--make function, and sectoral as well as symbolic matrix were made, which realized the standard grayscale printout. The software is recommended for use in ophthalmic clinic and education.

Humans↗
PubMed1992

[Use of a computer-controlled servo system to produce "ephysiological" contraction of isolated rat papillary muscle].

A computer-controlled servo system consisting of an ergometer with a force-displacement dual mode transducer, a Z-80 single-board microcomputer and a designed software was constructed. This servo system can be used to generate physiological contraction in isolated rat papillary muscle, in which the muscle went through a complete 4-phase cycle of force and length changes, similar to those undergone by muscle fibers in the beating heart during the cardiac cycle. This system is being used to investigate the tension-length relation and the network of isolated myocardium as well as the end-systolic tension-length relation and the force-velocity relation simultaneously.

Animals↗
PubMed1992

VA's Integrated Imaging System on three platforms.

The DHCP Integrated Imaging System provides users with integrated patient data including text, image and graphics data. This system has been transferred from its original two screen DOS-based MUMPS platform to an X window workstation and a Microsoft Windows-based workstation. There are differences between these various platforms that impact on software design and on software development strategy. Data structures and conventions were used to isolate hardware, operating system, imaging software, and user-interface differences between platforms in the implementation of functionality for text and image display and interaction. The use of an object-oriented approach greatly increased system portability.

Computer Graphics↗
PubMed1992

A manufacturing system for contoured foam cushions.

The design, application and evaluation of a specialized, personal computer-based manufacturing system for contouring foam cushions is presented. The topics discussed include both the hardware configuration and the software design. The target applications of this device are local or centralized fabrication of custom-contoured seat cushions. Although the technologies used for the development and implementation of this system are not new, using a personal-computer-based (PC) controller in place of a stand-alone numerically controlled (NC) motion controller significantly reduced the cost associated with this component. Further reductions in cost resulted from an optimization of the mechanical configuration for the dedicated task of carving foam cushions.

Computer-Aided Design↗
PubMed1992

Analysis of beat-to-beat cardiovascular hemodynamic variables obtained from long-term biotelemetry.

Manual methods of large volume data storage, retrieval, and analysis are difficult, time consuming, and present numerous opportunities for calculation errors. We have designed and implemented a comprehensive computer-based system for performing these functions. Development of this system was necessary since left ventricular (LV) blood pressure and two regional LV wall thickness measurements were obtained during long-term extracorporeal biotelemetry of miniswine for 24-h periods. During a single recording period over 100,000 individual cardiac cycles were recorded on analog tape and later analysed for determination of global myocardial oxygen demand and regional myocardial function. In addition, custom designed software was developed to determine the extent and duration of myocardial dysfunction. Batch file commands enabled the customized software to operate without prompting by the user thus optimizing the time usage of the computer, and the computer based data acquisition and analysis system. Although this system was designed specifically for analysing cardiovascular hemodynamic variables, it is flexible and can be applied to other experimental applications.

Analog-Digital Conversion↗
PubMedDate not supplied

X-File: a program for maintaining a radiographic teaching file.

Software designed for entry, retrieval, and maintenance of radiographic case-file data on a microcomputer offers considerable help in maintaining such records in a radiology department. The case files are based on the Index for Roentgen Diagnoses, published by the AmericanCollege of Radiology. The terms and code numbers of the index are included in the software, so that the user need only enter the diagnostic term desired; the code numbers and exact terminology are assigned automatically. The software is written for an IBM-compatible microcomputer. Residents and staff radiologists have been using the program for the past two years to store and find both confirmed cases and other interesting cases. The system's capacity exceeds 70,000 entries on a 20-megabyte had disk. The program has five features not found in previous similar programs and not attainable with manual methods.

Hospital Information Systems↗
PubMed1990

Computer-assisted teaching and learning in medicine.

Induced mainly by the increased spreading of personal computers in the last few years computer-assisted instruction (CAI) systems for medicine have been developed on a large scale. Proven structure principles are above all the simulation of patient management in a problem-orientated approach, the mathematical simulation of (patho-) physiological functions independent of particular patients and the separation of educational mode and scoring mode. There exists already a large choice in programs dealing with topics of internal medicine--especially cardiology--while operative disciplines are less represented so far. Programs accredited in the US for continuing medical education (CME) are usually of high quality as to medical contents. Other important quality criteria to be mentioned concerning simulation programs are algorithms of medical decision making, completeness and refinement of the medical knowledge base, software design and user interface. CAI is a unique tool to enhance clinical problem solving skills although--of course--it can by no means replace bedside teaching.

Computer-Assisted Instruction↗
PubMed1991

Software and hardware integration of a microprogrammable state machine for NMR imaging.

We have integrated a commercially available microprogrammable state machine (Tecmag PULSkit) for use as a magnetic resonance pulse programmer. Providing the capability for active research environment imaging protocols, it features timing resolution of 100 nsec, ten 16-bit loop counters, and individually addressable look-up tables. This integration involved hardware and software integration with a VAX 11/750 at several levels. Hardware: Each of the three gradient channels employs three digital-to-analog converters (DACs). An 8-bit, 4-quadrant, multiplying DAC generates the gradient waveform shape. A 12-bit DAC generates the multiplying DAC scaling voltage, controlling gradient amplitude and sign. A third 12-bit DAC produces a gradient offset (shim) voltage. An eddy current compensation network is present for each gradient channel. Software: The software design philosophy was to create a flexible interface (interactive window environment), while not constraining complex manipulation of the hardware (direct use of the pulse-sequence compiler primitives and microprogramming). The software levels include (a) pulse-sequence microprogramming, (b) pulse-sequence compiler, (c) interactive parameter specification, and (d) canned pulse-sequence microcode library.

Computer Systems↗
PubMed1989

Computer-aided pattern analysis of temperature differentials.

Chiropractic analysis often incorporates the evaluation of heat distribution patterns observed in skin temperature profiles. Historically, temperature recordings of the spine have been made with a heat detection instrument using a thermocouple design. The advent of refinements in infrared technology, however, have greatly enhanced temperature detection in terms of accuracy and reliability. The present research reflects the development of computer software designed to express the data obtained with a dual channel heat sensing instrument. Two phases are involved: a) digital information, received from the sensing instrument, is standardized, stored for future analysis, and retrieved for comparisons with other graphs; b) stored data is graphically displayed, statistically analyzed, and otherwise compared. The data is displayed for visual observation as a) temperature data received from either channel of the sensing instrument or b) relative temperature differences between data from both channels of the sending instrument. For statistical evaluation, corresponding readings (comparisons between graphs) are plotted against one another and analyzed by a moving Pearson Product Moment correlation and moving t-test. This evaluation is graphically represented with a numeric display of pertinent statistical values. Current work indicates that a 10 point moving correlation and t-test will yield accurate comparisons between graphs.

Algorithms↗
PubMed1979

Application of optimized parallel processing digital computers and numerical approximation methods to the ultra high-speed three-dimensional reconstruction of the intact thorax.

In order to achieve the computational capability to carry out many thousands of cross-sectional reconstructions, necessary to support a prototype high temporal and spatial resolution cylindrical scanning multiaxial tomographic unit, a series of design, software simulation, and fabrication studies is underway to develop a special-purpose high-speed reconstruction computer. This processor will rely upon integrated circuit arithmetic components of advanced design, and highly parallel architecture to execute X-ray based transaxial reconstruction algorithms at the rate of hundreds of cross sections/sec.

Computers↗
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↗
PubMed1992

A CAD CAM method for custom below-knee sockets.

The purpose of this investigation was to develop a numerical method for fabricating prosthetic sockets for below-knee amputees. An optical/laser digitiser scans an amputee's stump and collects three dimensional numerical data describing the surface of the limb and describing specific modification site locations. The numerical data from the laser camera representing the stump and modification sites are altered by the prosthetist using a custom computer aided design software system running on a personal computer. Using the altered numerical data a programme is created for a high resolution numerically controlled milling machine and a mould is made. The prosthetist then fabricates a socket. While the system has been tested with below-knee amputees it has been designed for application in most areas of prosthetics and orthotics. Utilising this method 15 patients were fitted. All patients subjectively stated that their "computer designed" socket fitted better than their conventionally made socket. As the research progressed and experience was gained with the system patients were normally fitted with the first socket iteration. The system overcomes five limitations existing with some of the other numerical systems: 1) accurate high resolution surface topography, 2) specific identification of subject modification sites, 3) flexible, user friendly software, 4) high resolution numerically controlled milling, and 5) integrated expansion to other prosthetic and orthotic areas.

Artificial Limbs↗
PubMed1990

A new comprehensive microcomputer software programme for the urodynamics clinic.

Urodynamic investigation has undoubtedly been greatly refined and facilitated with the use of the modern generation of microcomputers. Manual techniques of data storage, analysis and interpretation are tedious, time consuming and lead to significant observer-dependent transcription errors. The logical solution to this problem is to develop a specifically designed software programme which would operate in conjunction with the microcomputer system integrated in most modern urodynamic apparatus. We describe here our experiences with the development of just such a system.

Computer Systems↗
PubMed1991

Computer systems for dental practice management. A new generation of independent dental software.

A new generation of computer programs for dental patient management eliminates total dependence on the vendor for programming support. The software design enables information collected with the dental system to be transferred to popular off-the-shelf programs designed for business. A simplified example is used to illustrate for practitioners the advantages of this type of data structure management. Programs designed on this basis offer optimum performance and expandibility for both present and future needs.

Computer Systems↗
PubMedDate not supplied

[The use of mathematical modelling in improving the orthodontic treatment of end defects of the dental arches].

Mathematical modelling allowed to use specially designed software package for calculation of the necessary number of variants of dimensions of denture carcass while planning the orthodontic treatment. This could be done for each patient individually, thus ensuring the correct choice of orthodontic technique to replace the end defects of the dentition.

Computer Simulation↗
PubMed1992

Multi centre systems analysis study of primary health care: a study of socio-organizational and human factors.

The information management systems to support health programmes are inadequate. As computers become cheaper and more powerful, their application in the strengthening of the information infrastructure becomes more feasible. However, the high cost of specialized applications software limits their potential, especially in developing countries. A multi-centre systems analysis, (a descriptive study using a questionnaire), was made of District Health Sites in developing countries to analyse whether a common specialized application software design for implementation at a primary health care centre was feasible. Responses to the questionnaires by physicians at the primary health centres were compared between district health sites using contingency tables. Significant inter-site differences in social factors existed, respondents had no prior experience, but with near unanimity (98%) accepted the idea of computer assistance in their work. However, general reservations (31%) and fears (26%) about computer interference in the doctor-patient relationship were expressed. The human factor must be considered in interface design and training before implementation.

Attitude of Health Personnel↗