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PubMed1991

Development of an integrated filing system for endoscopic images.

A new integrated filing system for endoscopic images has been developed, comprising a main image filing system and subsystems located at different stations. A hybrid filing system made up of both digital and analog filing devices was introduced to construct this system that combines the merits of the two filing methods. Each subsystem provided with a video processor, is equipped with a digital filing device, and routine images were recorded in the analog image filing device of the main system. The use of a multi-input adapter enabled simultaneous input of analog images from up to 8 video processors. Recorded magneto-optical disks make it possible to recall the digital images at any station in the hospital; the disks are copied without image degradation and also utilised for image processing. This system promises reliable storage and integrated, efficient management of endoscopic information. It also costs less to install than the so-called PACS (picture archiving and communication system), which connects all the stations of the hospital using optical fiber cables.

Analog-Digital Conversion↗
PubMed1991

[EEG data filing system with personal computer and magneto-optical disc].

We established a new computerized EEG filing system, in which an EEG machine was connected to an EEG filing unit which consisted of a personal computer with a 32 bit CPU, 18 channel analog -to-digital and digital-to-analog converters, and a magneto-optical disc driver. This system has the following merits. The system was space-saving, the space required to store the EEG data, being only 1/500 of that required for storing EEG record. Though the system had two independent EEG filing units, our original file configuration enabled us to have access to all of the recorded EEG data anytime for more than 10 years. The system enabled us to display EEG data continuously on the high resolution CRT, just as if turning the page of an EEG record paper, and through the quick scanning, enabled us to view the entire EEG pattern. Furthermore, the system enabled us to conduct reliable digital analysis for EEG data by entering the EEG data without artifacts into a data processor after confirmation on the display. In the system, we used data files with the MS-DOS operating system. This enabled us to analyze the data obtained by a personal computer operating on other systems, by transferring the data to a floppy disc operating on our system. Our EEG filing system allows quick access to data as well as mass data storage.

Electroencephalography↗
PubMed1991

Dynamic fracture of hybrid endodontic hand instruments compared with traditional files.

The purpose of this study was to analyze in vitro the dynamic fracture of some endodontic hand instruments. The K file and H file were tested as reference traditional files; the K-Flex, Flexofile, Unifile, and Helifile were tested as newly developed hybrid instruments. The files were mounted in a lathe and rotated with cyclical axial motion in the lumen of a curved tempered steel groove until failure occurred. The results showed that the life span of instruments, the distance between the instrument tip and the rupture point, and the resistance to fracture were dependent on the size and design of the instruments. Moreover, scanning electron microscopic photographs revealed two types of breakage patterns. The K file, H file, Unifile, and Helifile showed a distinct fracture starting point with crack striations and ductile fractures. The K-Flex and Flexofile showed only plastic deformations and axial fissures.

Equipment Failure↗
PubMed1992

Dentine-removing characteristics of K-files energized by the Piezon-Endo.

This in-vitro study evaluated the pattern of dentine removal when a size 25 K-file energized by the Piezon-Endo was applied to flat surfaces of dentine under standardized conditions. The effects of power setting, interfacial force between file and dentine, direction of file oscillation and operator-assisted movement were examined. Vinyl polysiloxane impressions of the instrumented surfaces revealed characteristic patterns consisting of a series of oblique crests, similar to those observed in a previous study using the Cavi-Endo. Each crest was parallel to the next and separated by a relatively constant distance. These crests were disposed along the line of contact with the file. The Reflex microscope was used to determine the height, width and separation of these crests. There were differences in the amount and pattern of dentine removal compared with the study on the Cavi-Endo. When the file was held against the dentine surface using the minimum power setting and an interfacial force of 30 g, the pattern of dentine removal was very similar to that produced by the Cavi-Endo. Increasing the power setting to the maximum recommended for endodontics produced a slight but statistically non-significant increase in dentine removal. Further increase of the power setting to the absolute maximum produced significantly deeper and wider areas of dentine removal by the apical part of the file.(ABSTRACT TRUNCATED AT 250 WORDS)

Dental Cavity Preparation↗
PubMedDate not supplied

Differences in the obstetric malpractice claims filed by Medicaid and non-Medicaid patients.

BACKGROUND: Many physicians believe Medicaid patients are more likely than non-Medicaid patients to file malpractice claims. This study examines the accuracy of this belief in regard to obstetric malpractice claims. METHODS: Claims filed between January 1982 and June 1988 from the major malpractice insurer in Washington State were used to compare obstetric malpractice claims filed on behalf of Medicaid and non-Medicaid patients. RESULTS: Eleven percent (7/62) of all closed obstetric claims were filed by Medicaid patients, whereas 19 percent of all births in Washington State were to Medicaid patients between 1982 and 1988. Failure to diagnose or treat a fetal condition was the most commonly alleged negligence in both Medicaid and non-Medicaid groups. Most claims in both groups were settled before the cases went to court; a substantial minority of claims were dropped. The mean cost of Medicaid claims ($406,984) was three times that of non-Medicaid claims ($133,743), suggesting that paid Medicaid claims were more severe than paid non-Medicaid claims. CONCLUSIONS: Medicaid patients appear no more likely to file obstetric malpractice claims than non-Medicaid patients. The low likelihood of filing claims, coupled with large settlements, suggests that Medicaid patients may have less access to legal services than non-Medicaid patients.

Female↗
PubMed1992

Factors that prompted families to file medical malpractice claims following perinatal injuries.

OBJECTIVE: To identify self-reported reasons that prompt families to file malpractice claims following perinatal injuries. DESIGN: Families were interviewed by telephone using a questionnaire that contained structured and open-ended questions. PARTICIPANTS: Mothers of infants who had experienced permanent injuries or deaths and had closed malpractice claims in Florida between 1986 and August 1989 were interviewed. Questionnaires were completed by 127 (35%) of a total of 368 such families. OUTCOME MEASURES: Reasons prompting families to file and families' descriptions of medical events, advice from acquaintances, and the quality of physician-family communication. RESULTS: Families volunteered numerous reasons for filing: advised by knowledgeable acquaintances (33% of respondents), recognized cover-up (24%), needed money (24%), recognized that their child would have no future (23%), needed information (20%), and decided to seek revenge or protect others from harm (19%). Over one third of all families indicated that they were told by medical personnel prior to filing that the care provided had caused their children's injuries. Families expressed dissatisfaction with physician-patient communication. Families believed that physicians would not listen (13% of sample), would not talk openly (32%), attempted to mislead them (48%), or did not warn about long-term neurodevelopmental problems (70%). CONCLUSION: Families give many reasons for filing a claim. Obtaining money may not be the only goal for some families who file suit.

Family↗
PubMed1991

Utilization of MEDFILE--a preprinted medical literature filing system.

To facilitate the creation of a personal medical literature filing system, we developed MEDFILE, a noncomputerized, preprinted medical literature filing system. A graduating medical school class that had access to MEDFILE and a control group of incoming interns were studied to ascertain satisfaction, usage, utility, and implementation of MEDFILE in comparison with traditional literature filing systems. Data were obtained from 52 recent graduates of the site school and 25 graduates of other institutions. MEDFILE users had a significantly higher satisfaction level (7.3 +/- 1.5 vs 4.5 +/- 2.7, p less than .0001, two-tailed t-test), a more extensive filing system (p less than .02, chi square), and greater confidence that their filing system would remain useful during residency (p less than .0001, Fisher's exact test) than new graduates who had created their own filing systems. The data indicate that MEDFILE is an efficient, effective, and inexpensive method of organizing medical reprints. It may be particularly useful for physicians entering primary care disciplines that require information processing over a wide range of clinical topics.

Databases, Bibliographic↗
PubMed1979

Development of a multifunctional drug file for hospital pharmacy computer applications.

The development of a multifunctional master drug file (MDF) which satisfies initial pharmacy data base requirements and has the capability to support increasingly sophisticated computer applications is described. The computerized purchasing, inventory, drug use review and formulary systems in a 1,100-bed teaching hospital were evaluated to determine which existing data fields should be included in the MDF, Functional requirements for the MDF and 27 data fields, each with its own particular specifications for programming, were identified. A method of data input was designed to create and maintain the file using keypunched Hollerith cards. Data input forms were designed to serve as coding documents for drug file data. Verification of all data in the file can be performed by running a program which lists the contents of each drug recorded. Based on 1975 salary rates, the total cost of the MDF development was $4,010; total time required was 640 hours. Approximately one hour per week is needed to keep the file contents up to date. File design specifications and contents are discussed, with special emphasis on the functional aspects of the MDF. The MDF successfully fulfilled the initaial pharmacy computer system requirements and has the potential to accommodate increasingly sophisticated applications.

Computers↗
PubMed2025

MAFin: motif detection in multiple alignment files.

MOTIVATION: Whole Genome and Proteome Alignments, represented by the multiple alignment file format, have become a standard approach in comparative genomics and proteomics. These often require identifying conserved motifs, which is crucial for understanding functional and evolutionary relationships. However, current approaches lack a direct method for motif detection within MAF files. We present MAFin, a novel tool that enables efficient motif detection and conservation analysis in MAF files to address this gap, streamlining genomic and proteomic research. RESULTS: We developed MAFin, the first motif detection tool for Multiple Alignment Format files. MAFin enables the multithreaded search of conserved motifs using three approaches: (i) using user-specified k-mers to search the sequences. (ii) with regular expressions, in which case one or more patterns are searched, and (iii) with predefined Position Weight Matrices. Once the motif has been found, MAFin detects the motif instances and calculates the conservation across the aligned sequences. MAFin also calculates a conservation percentage, which provides information about the conservation levels of each motif across the aligned sequences, based on the number of matches relative to the length of the motif. A set of statistics enables the interpretation of each motif's conservation level, and the detected motifs are exported in JSON and CSV files for downstream analyses. AVAILABILITY AND IMPLEMENTATION: MAFin is offered as a Python package under the GPL license as a multi-platform application and is available at: https://github.com/Georgakopoulos-Soares-lab/MAFin.

Software↗
PubMed2026

HXMS: a standardized file format for HX-MS data.

MOTIVATION: Hydrogen/deuterium exchange-mass spectrometry (HX-MS) is a rapidly expanding technique used to investigate protein conformational ensembles. The growing popularity and utility of HX-MS has driven the development of diverse instrumentation and software, resulting in inconsistent, non-standardized data analysis and representation. Most HX-MS data formats also employ only mean deuteration representations of the data rather than full isotopic mass spectra, which reduces the information content of the data and limits downstream quantitative analysis. RESULTS: Inspired by reliable protein structure and genomics data formats, we present HXMS, a unified, lightweight, scalable, and human-readable file format for HX-MS data. The HXMS format preserves the isotopic mass envelopes for all peptides, captures the full experimental time-course including fully deuterated control samples, and contains all other key information. It supports multimodal distributions, post-translational modifications (PTMs), and experimental replicates. To promote compatibility with existing HX-MS workflows, we also developed PFLink, a Python package that converts exported data files from commonly used HX-MS software to the HXMS format. PFLink and the HXMS format will enable quantitative, higher-resolution data processing, improved data sharing and storage among HX-MS practitioners, future machine learning applications, and further developments in HX-MS analysis. AVAILABILITY AND IMPLEMENTATION: PFLink is publicly available to install locally on HuggingFace, alongside documentation, or use online at HuggingFace (https://huggingface.co/spaces/glasgow-lab/PFlink). The supplementary information includes sample input files, sample HXMS files, and a generic unfilled PFlink custom CSV file that users may populate with key experimental conditions and results, which can then be read and converted into the HXMS format.

Software↗
PubMed1992

A file format for the exchange of nuclear medicine image data: a specification of Interfile version 3.3.

Working Group 1 of the European project COST-B2 on quality assurance of nuclear medicine software has been concerned with the development of an appropriate mechanism for the transfer of nuclear medicine image data files between computer systems from different vendors. To this end a protocol based upon Report No. 10 of the American Association of Physicists in Medicine (AAPM) [1] was adopted. A previous publication [2] gave a specification (V3.2) for an intermediate file format with a list of key-value pairs for the header data associated with nuclear medicine image data files. This paper presents a revised specification for the intermediate file format and associated keys, now called V3.3, which has evolved from the experience in using the earlier version. It is hoped that the modifications proposed will improve the definition and usability of the file format as given in the earlier version.

European Union↗
PubMed1990

Some observations on the mechanics of oscillation of ultrasonic files.

The resonant characteristics of ultrasonic files driven by the Cavi-Endo unit were examined. The investigation was carried out by evaluating the pattern of oscillation and the power emitted by the ultrasonic files. It was observed that the files oscillated in a sinusoidal fashion, exhibiting a standing wave pattern along the file. The power emitted was found to be directly proportional to the flexibility of the file. Such behaviour is typical of a system that exhibits resonance.

Dental High-Speed Equipment↗
PubMed1991

Calculating DWI/DWAI recidivism with limited data: using state driver license file for drinking and driving research.

One major research issue in drinking-driving is the volume of DWI/DWAI recidivism in a political unit during a given period of time. This article addresses a methodological issue: How can limited data from the official driver license file be used to calculate drinking-driving recidivism rates? New York State maintains one of the most comprehensive driver license files in the nation, but a dynamic process purges records on the file that are more than ten years old. The magnitude of the recidivism rate calculated from this file, thus, is influenced by the number of data points included: the more years of data included, the higher the rate. We used OLS to examine the impact of the dimension of the data on the recidivism rate and mathematically extended the file to the point where the impact of the data dimension is minimum. We, then, calculated the New York State DWI/DWAI recidivism with an "extended dimension."

Alcohol Drinking↗
PubMed1991

Medical Facts File: a self service database of reference information.

The Dahlgren Memorial Library, Georgetown University Medical Center, will demonstrate Medical Facts File, a newly developed in-house database of general medical information. The file content emerged from the library's experience with commonly asked reference questions and the need to develop a database as an online source for users seeking quick answers to medical queries. Medical Facts File joins a growing family of over 18 databases which comprise Georgetown's IAIMS Knowledge Network. Use scenarios will demonstrate how an online search is initiated, either directly or as a prompt from one of the other online databases. The design of Medical Facts File at the Dahlgren Memorial Library began in late 1989 with a publishing section on instructions for authors planning to submit manuscripts to a variety of prominent medical journals. Since then, seven sections have been identified for the database. Three sections are highlighted for presentation, although work on the project is on-going. Medical Facts File is an easy-to-use, time saving system that facilitates tedious searching through a multitude of library sources. It provides users with a self-service, information look-up system.

Databases, Factual↗
PubMed1977

Report filing in histopathology.

An assessment of alternative methods of filing histopathology report forms in alphabetical order showed that orthodox card index filing is satisfactory up to about 100000 reports but, because of the need for long-term retrieval, when the reports filed exceed this number they should be copied on jacketed microfilm and a new card index file begun.

Costs and Cost Analysis↗
PubMed1992

An updated cross-referenced filing system for anesthesiologists.

A filing system that provides a medical-information retrieval system is useful for medical students, physicians-in-training, and practicing physicians. The present system is an expansion and update of the one proposed by Petty and Carden in 1973. This filing system for anesthesiologists contains a simple numerical index of the major categories in the anesthetic, medical, and surgical literatures. The organ system and the anesthetic considerations are combined. A cross-reference index is provided as well. This system allows the user to cross-file reprints, locate ones that have been loaned, and keep track of references that may be found in personal bound volumes. The files may be expanded over the years to any desired degree. Finally, this system may be of use either to the individual anesthesiologist or to a department's library.

Anesthesiology↗
PubMed1976

Computer-stored faculty publication file using the MT/ST in a medium-sized medical center library.

The Bowman Gray School of Medicine Library has implemented a computerized faculty publication file adapted from an existing system that utilized a Magnetic Tape/Selectric Typewriter for catalog card production and computer storage. The faculty publication file has provided printouts for the school's annual report and monthly faculty bulletins. After the data for all faculty bibliographies have been stored in the file, it will be possible to retrieve complete author and departmental listings. The file will be continuously updated by adding current citations and the bibliographies of new faculty members and by deleting data when faculty members leave the staff.

Cataloging↗
PubMed1990

Proposed standard for image cytometry data files.

A number of different types of computers running a variety of operating systems are presently used for the collection and analysis of image cytometry data. In order to facilitate the development of sharable data analysis programs, to allow for the transport of image cytometry data from one installation to another, and to provide a uniform and controlled means for including textual information in data files, this document describes a data storage format that is proposed as a standard for use in image cytometry. In this standard, data from an image measurement are stored in a minimum of two files. One file is written in ASCII to include information about the way the image data are written and optionally, information about the sample, experiment, equipment, etc. The image data are written separately into a binary file. This standard is proposed with the intention that it will be used internationally for the storage and handling of biomedical image cytometry data. The method of data storage described in this paper is similar to those methods published in American Association of Physicists in Medicine (AAPM) Report Number 10 and in ACR-NEMA Standards Publication Number 300-1985.

Electronic Data Processing↗