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PubMed2002

Spreadsheets for automated data collection, analysis, and report generation for diagnostic medical physics: publicly available on the world wide web.

A library of spreadsheets has been developed to facilitate the practice of diagnostic physics quality assurance. Each spreadsheet follows a standard template and uses the highest ranking controlling authority (within the United States) for pass/fail criteria and testing procedures. Sheets are now available for CT (computed tomography), MR (magnetic resonance), US (ultrasound), screen-film mammography, stereotactic breast, radiographic, fluoroscopic, computed radiography, film digitizer, and display quality control. Use is made of spreadsheet "workbooks" so that each testing event is a single sheet in the workbook. Thus, results over the lifetime of the device are gathered in a single file, and historical control charts are gathered on the first sheet. The spreadsheets are available at http://radweb.mcis.washington.edu/~sglanger, and are released under the Gnu (a recursive acronym. Gnu's Not Unix) public license. It is expected that others will add improvements, and they are expected and requested to submit them back to the author to be shared with the diagnostic physicist community at large.

Diagnostic Imaging↗
PubMed1979

A regional cooperative acquisition program for monographs.

A cooperative acquisition program for monographs for the twelve resource libraries in Region IX of the Regional Medical Library Network is described. Each of the participating libraries has agreed to purchase all books of an assigned publisher which fall within a prescribed subject-format profile. It is hoped that this will help to reduce unnecessary duplication and contribute toward the development of resources in the region.

Book Classification↗
PubMed1972

Document delivery capabilities of major biomedical libraries in 1968: results of a national survey employing standardized tests.

The standardized Document Delivery Tests (DDT's) developed earlier (Bulletin 56: 241-267, July 1968) were employed to assess the capability of ninety-two medical school libraries for meeting the document needs of biomedical researchers, and the capability of fifteen major resource libraries for filling I-L requests from biomedical libraries. The primary test data are summarized as statistics on the observed availability status of the 300 plus documents in the test samples, and as measures expressing capability as a function of the mean time that would be required for users to obtain test sample documents. A mathematical model is developed in which the virtual capability of a library, as seen by its users, equals the algebraic sum of the basic capability afforded by its holdings; the combined losses attributable to use of its collection, processing, relative inacessibility, and housekeeping problems; and the gain realized by coupling with other resources (I-L borrowing). For a particular library, or group of libraries, empirical values for each of these variables can be calculated easily from the capability measures and the status statistics. Regression equations are derived that provide useful predictions of basic capability from collection size. The most important result of this work is that cost-effectiveness analyses can now be used as practical decision aids in managing a basic library service. A program of periodic surveys and further development of DDT's is recommended as appropriate for the Medical Library Association.

Costs and Cost Analysis↗
PubMed1996

Management of otitis media with effusion in young children.

OBJECTIVE: To summarize and critique the Agency for Health Care Policy and Research (AHCPR) Clinical Practice Guideline for the management of otitis media with effusion (OME) in children. DATA SOURCES: The AHCPR Clinical Practice Guideline, Otitis Media with Effusion in Young Children; the Quick Reference Guide for Clinicians, Managing Otitis Media with Effusion in Young Children; and the Parent Guide, Middle Ear Fluid in Young Children, were the primary data sources. The AHCPR developed the Guideline based on a comprehensive literature review from multiple bibliographic databases, including the National Library of Medicine. Data were also collected during open hearings and from unpublished sources derived from a call in the Federal Register. Additional citations from the biomedical literature were used for supporting evidence. STUDY SELECTION: Peer-reviewed reports of controlled, randomized studies were preferred, but other study designs were considered. Over 3000 abstracts were identified, of which 378 articles were used for data extraction, and an additional 100 articles were included from bibliography review and panel recommendations. An expert panel reviewed the data and incorporated clinical expertise into the development of consensus statements. DATA EXTRACTION: Data were extracted to apply to a base case with OME to narrow the scope of the Guideline. The base case was defined as a child who is 1-3 years old, is otherwise healthy, and has no underlying craniofacial, neurologic, or sensory conditions. Multiple meta-analyses were done to help the panel come to conclusions on several issues. DATA SYNTHESIS: The Guideline documents carefully outlined treatment algorithms for the management of OME in otherwise healthy children. The main areas that need to be further clarified are the role of more aggressive identification of causative pathogens, when antimicrobial therapy should be initiated, and which antimicrobial agents are preferred for the treatment of OME. There are many vague areas in the Guideline that allow for multiple interpretations. Data regarding the use of corticosteroids were influenced heavily by the expert opinion of the panel rather than the literature-based evidence and potential cost implications. The Guideline provided specific recommendations for the surgical management of OME. Confounding patient factors that would affect decisions on management of OME, such as underlying disease states and physical or mental abnormalities, were not addressed in the Guideline. CONCLUSIONS: The documents were well organized and provide detailed explanation of the recommendations. The Guideline provides specific criteria for the surgical management of OME, but is vague in its recommendations on the medical management of OME with antibiotics, corticosteroids, and the use of invasive tympanocentesis in the evaluation of OME in otherwise healthy children.

Anti-Bacterial Agents↗
PubMedDate not supplied

A combinatorial approach toward the discovery of non-peptide, subtype-selective somatostatin receptor ligands.

The tetradecapeptide somatostatin is widely distributed throughout the body and is thought to be involved with a variety of regulatory functions. Recently, five human somatostatin receptors (hSSTR1-5) have been cloned and characterized. Several selective peptidal agonists of the hSSTR receptors are known, and we sought to apply this information to the design of novel non-peptide small molecule ligands for each receptor. Initial computational methods identified a 200 nM murine SSTR2 active compound via a database search of our sample collection. A combinatorial library was designed around the structural class of the compound with the goal of rapidly developing this initial lead into the desired subtype-selective small molecules in order to characterize the pharmacology of each of the receptor subtypes. The library was synthesized using the resin-archive, iterative deconvolution format. The total number of unique compounds in the library was expected to be 131,670, present in 79 mixtures of 1330 or 2660 compounds per mixture. Through sequences of screening and mixture deconvolution, the components of selective and highly active (Ki = 50 pM to 200 nM) non-peptide small molecule ligands for somatostatin subtypes 1, 2, 4, and 5 were identified. In addition to discovering compounds with the desired activity and selectivity, useful structure/activity information was generated which can be used in the design of new compounds and second-generation combinatorial libraries.

Combinatorial Chemistry Techniques↗
PubMed2002

Science's signal transduction knowledge environment: the connections maps database.

Knowledge environment (KE) describes the collection of electronic networking tools that have been and continue to be developed by AAAS and Stanford University libraries. Knowledge environments use practical, production-quality tools to systematize the consensus knowledge within a scientific domain and facilitate users' access to that knowledge. Science's Signal Transduction Knowledge Environment (STKE) is the first in this new concept in electronic publishing that combines the traditional, albeit electronic, publishing of articles, such as reviews, perspectives, and protocols, with tools for organizing and collating information in the cross-disciplinary field of signal transduction. One of the major tools developed for the STKE is the Connections Map database and the software (called CMADES [Connections Maps Authority Data Entry Software]) created to facilitate data entry by Pathway Authorities. The Connections Maps are a graphical representation of a database of information about the molecules involved in cellular signaling cascades. CMADES automates many of the functions involved in adding data into the Connections Maps database, such as references and descriptors, as well as allowing the Authorities to indicate the relationships between the components in the pathway through the use of a graphing tool. CMADES and the Connections Maps represent evolving tools that assist the Authorities in systemizing information regarding a particular system at the organism- and cell-specific level and the canonical level, as well as provide the STKE user with organized and expert-supplied information about signal transduction pathways.

Biology↗
PubMed2000

Genome-wide expression profiling of mid-gestation placenta and embryo using a 15,000 mouse developmental cDNA microarray.

cDNA microarray technology has been increasingly used to monitor global gene expression patterns in various tissues and cell types. However, applications to mammalian development have been hampered by the lack of appropriate cDNA collections, particularly for early developmental stages. To overcome this problem, a PCR-based cDNA library construction method was used to derive 52,374 expressed sequence tags from pre- and peri-implantation embryos, embryonic day (E) 12.5 female gonad/mesonephros, and newborn ovary. From these cDNA collections, a microarray representing 15,264 unique genes (78% novel and 22% known) was assembled. In initial applications, the divergence of placental and embryonic gene expression profiles was assessed. At stage E12.5 of development, based on triplicate experiments, 720 genes (6.5%) displayed statistically significant differences in expression between placenta and embryo. Among 289 more highly expressed in placenta, 61 placenta-specific genes encoded, for example, a novel prolactin-like protein. The number of genes highly expressed (and frequently specific) for placenta has thereby been increased 5-fold over the total previously reported, illustrating the potential of the microarrays for tissue-specific gene discovery and analysis of mammalian developmental programs.

Amino Acid Sequence↗
PubMed1992

The medical libraries of Vietnam--a service in transition.

The medical libraries of Vietnam maintain high profiles within their institutions and are recognized by health care professionals and administrators as an important part of the health care system. Despite the multitude of problems in providing even a minimal level of medical library services, librarians, clinicians, and researchers nevertheless are determined that enhanced services be made available. Currently, services can be described as basic and unsophisticated, yet viable and surprisingly well organized. The lack of hard western currency required to buy materials and the lack of library technology will be major obstacles to improving information services. Vietnam, like many developing nations, is about to enter a period of technological upheaval, which ultimately will result in a transition from the traditional library limited by walls to a national resource that will rely increasingly on electronic access to international knowledge networks. Technology such as CD-ROM, Integrated Services Digital Network (ISDN), and satellite telecommunication networks such as Internet can provide the technical backbone to provide access to remote and widely distributed electronic databases to support the information needs of the health care community. Over the long term, access to such databases likely will be cost-effective, in contrast to the assuredly astronomical cost of building a comparable domestic print collection. The advent of new, low-cost electronic technologies probably will revolutionize health care information services in developing nations. However, for the immediate future, the medical libraries of Vietnam will require ongoing sustained support from the international community, so that minimal levels of resources will be available to support the information needs of the health care community. It is remarkable, and a credit to the determination of Vietnam's librarians that, in a country with a legacy of war, economic deprivation, and international isolation, they have somehow managed to provide a sound basic level of information services for health care professionals.

Communism↗
PubMed1992

An analysis of transaction logs to evaluate the educational needs of end users.

End users at the University of Southern California (USC) have free access to the last ten years of MEDLINE through a local online system known as USCInfo. Librarians at USC Norris Medical Library provide documentation and offer formal and informal training on the use of the system to search MEDLINE. To assess the educational needs of the end users, 643 searches were analyzed. Although a high proportion (84%) of the searches were judged to be successful, the use of medical subject headings (MeSH) to obtain optimal results was low; only 20% of all successful subject searches employed MeSH. Also, the advanced features of the system were underutilized. While it is promising to learn that many end users are obtaining positive results, methods which will encourage end users improve their retrievals need to be developed.

Computer User Training↗
PubMed1992

Louis Gdalman, pioneer in hospital pharmacy poison information services.

The role played by hospital pharmacist Louis Gdalman in the development of poisoning information services in the Chicago area is described. In the 1930s, decades before the creation of the Chicago Poisoning Control Program, Louis Gdalman had already established a poison information service at St. Luke's Hospital in Chicago. Pharmacists provided poison information to the physicians and nurses working in the emergency room. By the early 1950s, Gdalman had established an extensive library of information on the management of acute and chronic poisoning and had developed a standard form for the collection of data from poison information calls. He personally provided a 24-hour poison information service and often took calls at home. In 1953, the American Academy of Pediatrics initiated the Chicago Area Poisoning Control Program and established treatment and referral centers at 11 hospitals, including St. Luke's Hospital. Louis Gdalman was the only pharmacist involved in this city-wide program. By 1962, the Master Poison Control Center was established at St. Luke's Hospital, which had merged with Presbyterian Hospital in 1956. Today, this center, known as the Chicago and Northeastern Illinois Regional Poison Control Center, is located at the Rush-Presbyterian-St. Luke's Medical Center in Chicago. Louis Gdalman, a hospital pharmacist, pioneered the area of poison information and established what was perhaps the first hospital-based comprehensive poison control center.

Chicago↗
PubMed1998

Using scientific evidence to improve hospital library services: Southern Chapter/Medical Library Association journal usage study.

BACKGROUND: Journal usage studies, which are useful for budget management and for evaluating collection performance relative to library use, have generally described a single library or subject discipline. The Southern Chapter/Medical Library Association (SC/MLA) study has examined journal usage at the aggregate data level with the long-term goal of developing hospital library benchmarks for journal use. METHODS: Thirty-six SC/MLA hospital libraries, categorized for the study by size as small, medium, or large, reported current journal title use centrally for a one-year period following standardized data collection procedures. Institutional and aggregate data were analyzed for the average annual frequency of use, average costs per use and non-use, and average percent of non-used titles. Permutation F-type tests were used to measure difference among the three hospital groups. RESULTS: Averages were reported for each data set analysis. Statistical tests indicated no significant differences between the hospital groups, suggesting that benchmarks can be derived applying to all types of hospital libraries. The unanticipated lack of commonality among heavily used titles pointed to a need for uniquely tailored collections. CONCLUSION: Although the small sample size precluded definitive results, the study's findings constituted a baseline of data that can be compared against future studies.

Benchmarking↗
PubMed1978

Friends of the library groups in health sciences libraries.

The Houston Academy of Medicine--Texas Medical Center (HAM--TMC) Library collected data on friends of the library groups from 103 health sciences libraries, using a mail questionnaire. Sixteen of the responding libraries had independent friends groups; seven had friends groups that were subordinate to a university group. The sixteen independent groups gave as their major purposes (1) to raise money for their associated library and (2) to develop support for their library. These groups contributed an average of $4,870 a year to their libraries, the money being used primarily to purchase rare books and working-collection books and to sponsor social events. The subordinate groups contributed relatively little money to the health sciences libraries responding to the survey.

Evaluation Studies as Topic↗
PubMed1991

Publishing, libraries and new technologies in Europe--today and tomorrow.

This paper addresses the challenges facing medical and health-care librarians from a European perspective. Drawing on his extensive knowledge of European affairs, the author emphasizes the historical roots of European cultural exchange and co-operation in the biomedical area. The impact of the new technologies and the unique opportunities offered by the CEC Plan of Action for promoting co-operation in Europe are discussed. In conclusion, the threat to our cultural heritage posed by acid paper is outlined and European librarians are urged to develop collective initiatives to meet the challenges facing us all.

Europe↗
PubMed1994

LIFENET/INTERNET and the health science librarian.

The Medical Library Center of New York, a cooperative library agency for the health sciences, developed a program to offer an electronic communications system (LIFENET) with access to the Internet for its members. Information on documentation and training as well as statistics on the subsequent use of the system and of the Internet are discussed in the article. Specific examples of how health science librarians are using the system include bibliographic verification, reference, research on integrated library systems, production of duplicate journal lists, and professional activities such as electronic mail and discussion groups (listservs).

Computer Communication Networks↗
PubMed1999

Toward the gene catalogue of sea urchin development: the construction and analysis of an unfertilized egg cDNA library highly normalized by oligonucleotide fingerprinting.

We describe the use of oligonucleotide fingerprinting for the generation of a normalized cDNA library from unfertilized sea urchin eggs and report the preliminary analysis of this library, which resulted in the establishment of a partial gene catalogue of the sea urchin egg. In an analysis of 21,925 cDNA clones by hybridization with 217 oligonucleotide probes, we were able to identify 6291 clusters corresponding to different transcripts, ranging in size from 1 to 265 clones. This corresponds to an average 3.5-fold normalization of the starting library. The normalized library represents about one-third of all genes expressed in the sea urchin egg. To generate sequence information for the transcripts represented by the clusters, representative clones selected from 711 clusters were sequenced. The construction and preliminary analysis of the normalized library are the first steps in the assembly of an increasingly complete collection of maternal genes expressed in the sea urchin egg, which will provide a number of insights into the early development of this well-characterized model organism.

Animals↗
PubMed2001

Comparative evaluation of 5'-end-sequence quality of clones in CAP trapper and other full-length-cDNA libraries.

To enhance the usefulness of the laboratory mouse and to facilitate the rapid assay of gene functions we have been collecting the entire set of mouse full-length cDNA by one-pass sequencing. To collect full-length cDNA clones efficiently, it is critical to construct high-quality cDNA libraries. In recent years, we have been developing a way to construct full-length cDNA libraries by using biotinylation of the cap structure (the 'CAP-trapper' method) coupled with treatment to increase reverse transcriptase efficiency at high temperature by the addition of trehalose. In this paper we report our evaluation of the quality of CAP trapper and a number of other full-length cDNA libraries, including the results of 5' end analysis of clones in CAP trapper and the other libraries. We used a procedure that compared the 5'-ends of cDNA clones with those of genes in the public databases. Our analysis showed that 63% of cDNA clones in CAP trapper libraries had sequences that were either the same length as those of equivalent genes in the public database or 5'-extended, and that 90% of these clones maintained their coding sequences. These results indicate that the CAP trapper library is a promising tool for collecting full-length cDNA in large-scale projects. Comparison of the quality of CAP trapper with that of other full-length-cDNA libraries confirmed the value of these libraries.

Algorithms↗