By Pierre Rijlant (auth.), E. Schubert (eds.)
ISBN-10: 1468442449
ISBN-13: 9781468442441
ISBN-10: 1468442465
ISBN-13: 9781468442465
The electrical box of the guts used to be defined diagrammatically for the 1st time via A. Waller in 1888. besides the fact that, it used to be no longer till a bit greater than ten years in the past that with the advance of micro digital strategies, it grew to become obtainable to biophysical modeling, to special physiological measurements, and to program in complex scientific prognosis. those chances opened how to the therapy of questions that are known as the direct and the inverse answer of the cardioelectric challenge. a number of teams of investigators are actually operating to accomplish an entire biophysical and physiological description of the iteration of the cardiac electrical box. This paintings might good shape the foundation for a brand new approach to diagnostic measurements, with purposes even in medical cardiology, supplying very important info by means of a non invasive research of the sufferer. numerous meetings have motivated foreign trade of the result of examine at the cardiac electrical box. between others, the satellite tv for pc symposium of the XXV foreign Congress of Physio logical Sciences at the electrical box of the guts, in Brussels, August 2-3, 1971, and the convention on Measuring and Modeling of the cardiac electrical box, in Smolenice close to Bratislava, June 14- 17, 1976, will be thought of predecessors of the Dresden symposium the complaints of that are offered during this volume.
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Extra info for Models and Measurements of the Cardiac Electric Field
Example text
4). This is probably due to the fact that the surface potential pattern is due to the simultaneous presence of two groups of sources in the heart: atrial recovery and ventricular preexcitation. A single dipole cannot account for such a potential field. In the subsequent instants the ventricular source becomes preponderant and a single generator accounts reasonably well for the simple potential distribution. During this time interval location 14 in the posterior portion of the left A-V ring, close to the interventricular septum, generated the minimum MRE, while location 6 in the right lateral A-V ring produced the highest error (Fig.
Kulbertus, H. , 1976, Pathological Findings in Patients with Left Anterior Hemiblock, in: Vectorcardiography 3, North-Holland publ. , Amsterdam - Oxford, 220 pp. , van Darn, R. , Freud, G. , Janse, M. , Meijler, F. L. Arzbaecher, R. , 1970, Total Excitation of the Isolated Human Heart. Circulation, 41:899-912. Holt, J. , Barnard, A. C. , Lynn, M. , 1969, A Study of the Human Heart as a Multiple Dipole Electrical Source. I. Normal Adult Male Subjects. II. Diagnosis and Quantitation of Left Ventricular Hypertrophy, Circulation, 40:687-714.
2. INTEGRAL CHARACTERISTICS OF CARDIAC ELECTRICAL GENERATOR 65 1=aw5 (b) Fig. 2. The graphs show that for the inhomogeneous volume conductor the maximal value of the function J is almost independent upon radial localization of the elementary generator.
Models and Measurements of the Cardiac Electric Field by Pierre Rijlant (auth.), E. Schubert (eds.)
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