Biomedical subjects

Régis Beuscart

Publications and source records attributed to Régis Beuscart.

7 recordsLinked to original sources

PubMed2006

Using Treemaps to represent medical data.

Confronted with the inadequacy of traditional charts, we tested the contribution of Treemaps to the representation of medical data. Treemap charts allow description of large hierarchical collections of quantitative data, on a synthetic way. Treemaps were implemented using PHP5, and were tested in the field of DRG-mining and other medical informations. From now on, this implementation is used in an interactive web-based request tool, and could be used to design interactive piloting tools.

Computer Graphics↗

PubMed2005

Modelling a regional reorganization of cardiovascular surgery provision.

The Nord-Pas-de-Calais region of France is under-served in terms of access to cardiovascular surgery services, as illustrated by relatively high levels of waiting list mortality. This prompted the decision to create a new surgical unit in the region's densely populated, former industrial heartland called the "Mining Basin". Geographical and epidemiological modelling was used prospectively to estimate the likely future level of activity of the existing public sector cardiovascular surgery units. Information on the regional population distribution and the likely pattern of service use enabled us to estimate the new unit's potential activity. Our simulations produced nine scenarios which describe variations in the existing public units' activity ranging from -54% to +95%. This type of approach should enable policy makers to improve the organization of healthcare provision.

Adolescent↗

PubMed2005

An Improved Publication Process for the UMVF.

The "Université Médicale Virtuelle Francophone" (UMVF) is a federation of French medical schools. Its main goal is to share the production and use of pedagogic medical resources generated by academic medical teachers. We developed an Open-Source application based upon a workflow system which provides an improved publication process for the UMVF. For teachers, the tool permits easy and efficient upload of new educational resources. For web masters it provides a mechanism to easily locate and validate the resources. For both the teachers and the web masters, the utility provides the control and communication functions that define a workflow system.For all users, students in particular, the application improves the value of the UMVF repository by providing an easy way to find a detailed description of a resource and to check any resource from the UMVF to ascertain its quality and integrity, even if the resource is an old deprecated version. The server tier of the application is used to implement the main workflow functionalities and is deployed on certified UMVF servers using the PHP language, an LDAP directory and an SQL database. The client tier of the application provides both the workflow and the search and check functionalities and is implemented using a Java applet through a W3C compliant web browser. A unique signature for each resource, was needed to provide security functionality and is implemented using the MD5 Digest algorithm. The testing performed by Rennes and Lille verified the functionality and conformity with our specifications.

Education, Medical↗

PubMed2004

Homecare: the need for cooperative information systems.

Assuming responsibility of patients at home (Homecare) is organized around a complex cooperation of partners: health care actors, relatives and helpers, all of whom intervene in the patient's home and who spark off the setting up of cooperative information systems. We present our work relating to such systems within the context of home care. Such activity is based on the collaboration of multiple mobile actors, obtaining information in a multimodal fashion, while taking the job profiles and professional grades of the users into account. Information is obtained from heterogeneous systems. The quality of management of the activity of the various health care actors and of the feedback on information handled at the time of the homecare process will determine how easy it may be to set up homecare as well as the quality of care. In this paper we outline the main stages of our work: grasping the context of homecare and studying co-operative activity from a fundamental point of view but also as applied to homecare. We describe the system proposed for accessing distributed information and for organizing the supervision of the 2 fundamental processes: (1) the LOGISTICAL process (to manage the organization), (2) and the CARE Process (to follow-up the medical or nursing status of the patient), and then we enhance the contribution of mobile technologies in this context.

Cell Phone↗

PubMed2003

[Evaluation of cytological screening for cancers and precancerous lesions of the cervix].

The aim was to study retrospectively different parameters useful for the evaluation of cytological screening for cancers and precancerous lesions of the cervix. The study concerned 23,815 smears obtained consecutively from 18,045 women in 4 years. The proportion of follow up smears was equal to 11.1%. The % of abnormal smears was equal to 10.3% of all smears, 7.7% of screening smears (including 0.85% high grade or invasive lesions) and 30.7% of follow-up smears (including 5.55% high grade lesions). The 20,968 screening smears (from 16,896 women) included 2% unsatisfactory smears, 4.15% Ascus (atypical squamous cells of undetermined significance), 2.6% LSIL (low grade squamous intraepithelial lesion), 0.77% HSIL (high grade SIL), 0.05% squamous carcinomas, 0.10% atypical glandular cells and 0.02% adenocarcinomas. Histological examination of the cervix was obtained in 3.3% of women with negative smears, 17.7% of Ascus, 45.8% of LSIL and 82.9% of HSIL. In 1,082 women with histological examination, an histological diagnosis of high grade or invasive lesion of the cervix was made in 7.2% of women with Ascus, 15.7% of cytological LSIL and 85.1% of cytological HSIL.

Adenocarcinoma↗

PubMed2003

Similarity study on university teaching hospitals in France.

The recent development of hospital information systems in France presently makes it possible to study similarity between establishments based on an official data source, the AGHN. The AGHN is based on three types of information: medical, structural (personnel and material) and economic. Using the PCA (principal component analysis) tool, we can examine the situation of one regional and\or university hospital with regards to others of the same kind.

Age Distribution↗

PubMed2002

Assessing association rules and decision trees on analysis of diabetes data from the DiabCare program in France.

Recent advances in information technology have made it possible to solve increasingly complex problems, and also to collect and store huge amounts of information. These vast quantities of data further have to be transformed into relevant value-added and "decision-quality" knowledge. It is against this background that the KDD (Knowledge Discovery in Databases), a multidisciplinary field using computer learning, artificial intelligence, statistics, database technology, expert systems, and data visualization, appeared in the early 90's. In order to assess these technologies in the medical field, we have tested some of these techniques on a large database at our disposal, named DiabCare stemming from the WHO - DiabCare program for the application of the Saint-Vincent Declaration. It contains evaluation data on the health care of patients with diabetes, and in particular, its complications. So far, data analysis has been done using classical statistical methods, and we now intend to make use of such data-mining tools as Associations Rules and Decision and Classification Trees for further exploration of this database. The results presented here show that data mining techniques can be used successfully to extract knowledge from medical databases. The results obtained using Association Rules and especially Decision Trees are very promising.

Algorithms↗