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Multi-parametric analysis of physio-pathological cardiotocographic (CTG) signals; The Lempel-Ziv complexity measure of finite sequences

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Abstract:
Tuesday, 23rd November 2004 - title: A multi-parametric analysis of the Fetal Heart Rate (FHR) Variability signal in CTG recordings was carried out. My investigation focused on those cases where the physio-pathological condition of the foetus was wrongly assessed. The attempt was to identify a set of parameters which would enable a correct recognition of fetal condition. The results reflect the difficulty of differentiating healthy vs. pathological cases due to the intrinsic variability of the signal. The Lempel-Ziv complexity measure is related to the number of different patterns and the rate of their occurrence along the selected finite series. The proposed study was carried out on deterministic signals and ECG-recordings of healthy subjects with the objective of evaluating the effect of random noise on the LZ measure. As the LZ method shows a good persistence with respect to noise, it might reveal able to supply new diagnostic indications.

Type of Seminar:
Public Seminar
Speaker:
Antonello Caruso
Biomedical Engineering, Politecnico di Milano
Date/Time:
Nov 23, 2004   14:00
Location:

ETH Zentrum, Physikstrasse 3, Zurich, Building ETL, Room K 25
Contact Person:

Prof. M. Morari
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Biographical Sketch:
Antonello Caruso was born in Milan, Italy, on April 25th, 1981. After completing the basic course of studies, in 1998 he was awarded a two-year scholarship offered by the United World College of the Adriatic (Duino, Italy). In May, 2000, he earned the I.B. Diploma with a grade of 42/45. In September, 2000 he matriculated at the faculty of Biomedical Engineering, Politecnico di Milano. In July 2003 he discussed his Laurea di 1° livello (B. Sc.) thesis with the title: “Methods of analysis of the foetal heart rate variability signal”. He graduated with a final grade of 110/110. In September 2003 Antonello Caruso entered the two-year Laurea Specialistica (M. Sc.) programme in Biomedical Engineering, Politecnico di Milano. He spent the academic year 2003/2004 at Luleĺ Tekniska Universitet (Sweden) on an Erasmus scholarship. His research interests include physiological signal processing and parametric analysis, with particular emphasis on hear rate variability time series.