title: RF-transmitted CsI radio-isotopic ambulatory recorder for left ventricular ejection fraction monitoring.
abstract: We have developed a CsI multidetector probe in order to produce a nuclear ambulatory recorder to study simultaneously cardiac electric activity and the left ventricular ejection fraction. To make the device lighter, the electronics were designed with surface-mounted technology, and a serial data RF transmission system was used. The data are processed on a real-time basis using a portable microcomputer. Unlike other commercially available devices, this monitor avoids the problems of volume, weight, recording time capacity and slow off-line data processing. Our device permits global and regional analysis of the ejection fraction for a moderate manufacturing cost. It is intended primarily for ambulatory use and can easily be adapted to perform a monitoring function. The first tests on patients conducted using the prototype demonstrate the technical reliability and satisfactory operation of the device.
authors.affiliation: Service de Cardiologie C, Höpital Cardiologique-CHRU, Lille, France.
authors.forename: H
authors.initials: H
authors.lastname: Bedoui
authors.forename: J
authors.initials: J
authors.lastname: Rousseau
authors.forename: A
authors.initials: A
authors.lastname: Millaire
authors.forename: C
authors.initials: C
authors.lastname: Foucher
authors.forename: G
authors.initials: G
authors.lastname: Ducloux
authors.forename: X
authors.initials: X
authors.lastname: Marchandise
mesh_terms: D002586:Cesium; D015716:Electrocardiography, Ambulatory / Q000295:instrumentation; D004582:Electronics, Medical; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D007454:Iodides; D008838:Microcomputers; D018670:Monitoring, Ambulatory / Q000295:instrumentation*; D011877:Radionuclide Imaging; D013318:Stroke Volume
chemical_list: D007454:Iodides; D002586:Cesium; C040050:cesium iodide