Et profilbilde

Professor
Trygve Christian Eftestøl { "honorific-suffix": "Professor", "fn": "Trygve Christian Eftestøl", "tel": "Telephone: +47 51832035", "email": "trygve.eftestol@uis.no" }

Faculty Faculty of Science and Technology
Department Department of Electrical Engineering and Computer Science
Room KE E-435

Research fields

Selected publications

Research in progress

Work experience

Scientific publications (from Cristin)

  • Oppedal, Ketil; Eftestøl, Trygve Christian (veileder); Engan, Kjersti (veileder); Aarsland, Dag (veileder); Beyer, Mona K. (veileder) (2016). White Matter Lesions and Pattern Recognition in MRI of Neurodegenerative Dementia. Universitetet i Stavanger. ISBN 978-82-7644-674-6. 166 p.
  • Oskal, Kay Raymond; Eftestøl, Trygve Christian (veileder) (2016). Myocardial damage during mountain bike race - an analysis of data from Nordsjørittet 2014 (NEEDED study). Universitetet i Stavanger. 74 p.
  • Vu, Thi Phuong Huyen; Eftestøl, Trygve Christian (veileder); Engan, Kjersti (veileder) (2016). Respiratory-cardio signal processing and analysis of resuscitation data on newborns in low-resource settings. Universitetet i Stavanger. ISBN 978-82-7644-661-6. 174 p.
  • Eftestøl, Trygve (2000). Signal analysis of out-of-hospital cardiac arrest electrocardiograms for decision support during cardiopulmonary resuscitation. Tapir. 160 p.
  • Eftestøl, Trygve Christian; Stokka, Svein Erik; Kvaløy, Jan Terje; Rad, Ali Bahrami; Irusta, Unai; Aramendi, Elisabete; Alonso, Erik; Nordseth, Trond; Skogvoll, Eirik; Wik, Lars; Kramer-Johansen, Jo (2018). A machine learning approach to model a probabilistic relationship between parameters reflecting quality of chest compressions and physiological response during out-of-hospital cardiopulmonary resuscitation. European Resuscitation Council; 2018-09-20 - 2018-09-22.
  • Le, Kjell; Eftestøl, Trygve Christian; Engan, Kjersti; Kleiven, Øyunn; Ørn, Stein (2018). Invariant electrical mean axis in electrocardiogram. 2018-09-23 - 2018-09-26.
  • Le, Kjell; Eftestøl, Trygve Christian; Engan, Kjersti; Rong, Chunming; Ørn, Stein; Kleiven, Øyunn (2018). Noise detection and handling in ECG signals. 2018-03-12 - 2018-03-13.
  • Le, Kjell; Eftestøl, Trygve Christian; Engan, Kjersti; Ørn, Stein; Kleiven, Øyunn (2018). High Frequency Noise Detection and Handling in ECG Signals. 2018-09-03 - 2018-09-07.
  • Meinich-Bache, Øyvind; Engan, Kjersti; Eftestøl, Trygve Christian; Austvoll, Ivar (2018). KINECT MODELLING OF CHEST COMPRESSIONS - A FEASIBILITY STUDY FOR CHEST COMPRESSION DEPTH MEASUREMENT USING DIGITAL STRATEGIES. IEEE; 2018-10-07 - 2018-10-10.
  • Nordseth, Trond; Eftestøl, Trygve Christian; Skogvoll, Eirik; Kvaløy, Jan Terje (2018). WHICH FACTORS PROMOTE TRANSITION FROM PEA TO SPONTANEOUS CIRCULATION AND PEA RECURRENCE IN CHILDREN?. American Heart Association; 2018-11-10 - 2018-11-11.
  • Nordseth, Trond; Skogvoll, Eirik; Eftestøl, Trygve Christian; Kvaløy, Jan Terje (2018). THE DYNAMIC CLINICAL COURSE OF PEDIATRIC ADVANCED LIFE SUPPORT IN IN-HOSPITAL CARDIAC ARREST. American Heart Association; 2018-11-10 - 2018-11-11.
  • Wetteland, Rune; Engan, Kjersti; Eftestøl, Trygve Christian; Kvikstad, Vebjørn; Janssen, Emiel (2018). Histological Image Segmentation of Bladder Cancer Using Machine Learning. Norsk forening for bildebehandling og mønstergjenkjenning; 2018-03-12 - 2018-03-13.
  • Khanmohammadi, Mahdieh; Engan, Kjersti; Eftestøl, Trygve Christian; sæland, charlotte; Larsen, Alf Inge (2017). SEGMENTATION OF CORONARY ARTERIES FROM X-RAY ANGIOGRAPHY SEQUENCES DURING CONTRAST FLUID PROPAGATION BY IMAGE REGISTRATION. 2017-11-14 - 2017-11-16.
  • Meinich-Bache, Øyvind; Engan, Kjersti; Eftestøl, Trygve Christian; Austvoll, Ivar (2017). Detecting Chest Compression Depth Using a Smartphone Camera and Motion Segmentation. 2017-06-12 - 2017-06-14.
  • Urdal, Jarle; Engan, Kjersti; Eftestøl, Trygve Christian; Kidanto, Hussein; Yarrot, Ladislaus Blacy; Eilevstjønn, Joar; Ersdal, Hege Langli (2017). Signal Processing and Classification for Identification of Clinically Important Parameters During Neonatal Resuscitation. IEEE Signal Processing Society Malaysia Chapter; 2017-09-12 - 2017-09-14.
  • Eftestøl, Trygve Christian (2015). Biomedical data analysis. Norway Pumps & Pipes; 2015-10-01.
  • Eftestøl, Trygve Christian; Singsaas, Erlend; Engan, Kjersti; Woie, Leik; Ørn, Stein (2015). Automatic Detection of Microvascular Obstruction in Patients with Myocardial Infarction. Computing in Cardiology; 2015-09-06 - 2015-09-09.
  • Engan, Kjersti; Naranjo, Valery; Eftestøl, Trygve; Ørn, Stein; Woie, Leik (2015). Segmentation of LG Enhanced Cardiac MRI. Insticc; 2015-01-12 - 2015-01-15.
  • Vu, Huyen; Eftestøl, Trygve; Engan, Kjersti; Eilevstjønn, Joar; Linde, Jørgen Erland; Ersdal, Hege (2015). Exploratory Analysis of Ventilation Signals from Resuscitation Data of Newborns. Insticc; 2015-01-12 - 2015-01-15.
  • Eftestøl, Trygve; Måløy, Frode; Engan, Kjersti; Kotu, Lasya Priya; Woie, Leik; Ørn, Stein (2014). A Texture-based Probability Mapping for Localisation of Clinically Important Cardiac Segments in the Myocardium in Cardiac Magnetic Resonance Images from Myocardial Infarction Patients. IEEE; 2014-10-27 - 2014-10-30.
  • Engan, Kjersti; Woie, Leik; Eftestøl, Trygve (2014). Defining Angular and Radial Positions and Parameters for Myocardial Pixels in Cardiac MR Images. 2014-09-07 - 2014-09-10.
  • Huyen, Vu; Eftestøl, Trygve; Engan, Kjersti; Eilevstjønn, Joar; Linde, Jørgen Erland; Ersdal, Hege (2014). Exploratory Analysis of Heart Rate Changes in Newborns to Investigate the Effectiveness of Bag-Mask Ventilation. 2014-09-07 - 2014-09-10.
  • Rad, Ali Bahrami; Eftestøl, Trygve; Kvaløy, Jan Terje; Ayala, Unai; Kramer-Johansen, Jo; Engan, Kjersti (2014). Nearest-manifold classification approach for cardiac arrest rhythm interpretation during resuscitation. IEEE; 2014-05-04 - 2014-05-09.
  • Rad, Ali Bahrami; Eftestøl, Trygve; Kvaløy, Jan Terje; Ayala, Unai; Kramer-Johansen, Jo; Engan, Kjersti (2013). Probabilistic Classification Approaches for Cardiac Arrest Rhythm Interpretation during Resuscitation. 2013-09-22 - 2013-09-25.
  • Eftestøl, Trygve (2013). Signal and image processing projects in the biomedical data analysis research group. Mathematics/Physics group, University of Stavanger; 2013-11-25 - 2013-11-27.
  • Engan, Kjersti; Naranjo, Valery; Eftestøl, Trygve; Woie, Leik; Schuchter, Arthur; Ørn, Stein (2013). Automatic Detection of Heart Center in Late Gadolinium Enhanced MRI. 2013-09-25 - 2013-09-28.
  • Engan, Kjersti; Naranjo, Valery; Eftestøl, Trygve; Ørn, Stein; Woie, Leik (2013). Automatic Segmentation of the Epicardium in Late Gadolinium Enhanced Cardiac MR Images. 2013-09-22 - 2013-09-25.
  • Måløy, Frode; Woie, Leik; Eftestøl, Trygve; Engan, Kjersti; Ørn, Stein (2013). Measuring the Degree of Fibrosity of Myocardial Scars from Late Gadolinium- Enhanced Cardiovascular Magnetic Resonance Images. 2013-09-22 - 2013-09-25.
  • Ayala, U; Aramendi, Elisabete; Irusta, Unai; Alonso, E; gonzales-otero, digna; Eftestøl, Trygve; Kramer-Johansen, Jo; Ingason, Andres (2012). Recommendations of the American Heart Association on the rhythm library specifications for the development of shock advice algorithms: Do they reflect the real scenario?.
  • de Gauna, Sofia Ruiz; gonzales-otero, digna; Ruiz, Jesus; Ayala, U; Alonso, E; Eftestøl, Trygve; Kramer-Johansen, Jo (2012). Is rhythm analysis during chest compression pauses for ventilation feasible?.
  • Eftestøl, Trygve (2012). Chest compressions: The good, the bad and the ugly.
  • Eftestøl, Trygve; Kvaløy, Jan Terje; Nilsen, Dennis W.T.; Woie, Leik (2012). Analysis of Intracardiac Electrogram Changes. Computing in Cardiology; 2012-09-09 - 2012-09-12.
  • Eftestøl, Trygve; Woie, Leik; Engan, Kjersti; Kvaløy, Jan Terje; Nilsen, Dennis W.T.; Ørn, Stein (2012). Texture Analysis to Assess Risk of Serious Arrhythmias after Myocardial Infarction. Computing in Cardiology; 2012-09-09 - 2012-09-12.
  • Kotu, Lasya Priya; Engan, Kjersti; Eftestøl, Trygve; Woie, Leik; Ørn, Stein; Katsaggelos, Aggelos (2012). LOCAL BINARY PATTERNS USED ON CARDIAC MRI TO CLASSIFY HIGH AND LOW RISK PATIENT GROUPS. European Association for Signal, Speech, and Image Processin; 2012-08-27 - 2012-08-31.
  • Oppedal, Ketil; Engan, Kjersti; Aarsland, Dag; Beyer, Mona Kristiansen; Tysnes, Ole-Bjørn; Eftestøl, Trygve (2012). Using local binary pattern to classify dementia in MRI. IEEE EMB; 2012-05-02 - 2012-05-05.
  • Kotu, Lasya Priya; Engan, Kjersti; Eftestøl, Trygve; Ørn, Stein; Woie, Leik (2011). Segmentation of Scarred and Non-Scarred Myocardium in LG Enhanced CMR Images using Intensity-Based Textural Analysis. IEEE Engineering in Medecine and biology society; 2011-08-30 - 2011-09-03.
  • Kotu, Lasya Priya; Engan, Kjersti; Eftestøl, Trygve; Ørn, Stein; Woie, Leik (2011). TEXTURE CLASSIFICATION OF SCARRED AND NON-SCARRED MYOCARDIUM IN CARDIAC MRI USING LEARNED DICTIONARIES. IEEE signal processing society; 2011-09-11 - 2011-09-14.
  • Nordseth, Trond; Edelson, Dana P.; Bergum, Daniel; Olasveengen, Theresa Mariero; Eftestøl, Trygve; Abella, Benjamin; Skogvoll, Eirik (2011). Optimal CPR Loop Duration for Asystole and Pulseless Electrical Activity During In-Hospital Cardiac Arrest.
  • Nordseth, Trond; Edelson, DP; Bergum, Daniel; Olasveengen, Theresa Mariero; Eftestøl, Trygve; Abella, Ben; Skogvoll, Eirik (2011). Optimal CPR Loop Duration for Asystole and PEA during In-Hospital Cardiac Arrest. American Heart Association; 2011-11-12 - 2011-11-13.
  • Nordseth, Trond; Edelson, DP; Bergum, Daniel; Olasveengen, Theresa Mariero; Eftestøl, Trygve; Abella, Ben; Skogvoll, Eirik (2011). Prevalence and Development of Clinical States during In-Hospital Cardiac Arrest. American Heart Association; 2011-11-12 - 2011-11-13.
  • Engan, Kjersti; Eftestøl, Trygve; Ørn, Stein; Kvaløy, Jan Terje; Woie, Leik (2010). Exploratory Data Analysis of Image Texture and Statistical Features on Myocardium and Infarction Areas in Cardiac Magnetic Resonance Images. 2010-08-31 - 2010-09-04.
  • Kvaløy, Jan Terje; Skogvoll, Eirik; Eftestøl, Trygve; Gundersen, Kenneth; Kramer-Johansen, Jo; Olasveengen, Theresa Mariero; Steen, Petter Andreas (2010). Analysing clinical state transitions during cardiopulmonary resuscitation. 2010-08-29 - 2010-09-02.
  • Pampanin, D.M.; Ravagnan, E.; Apeland, S.; Aarab, N.; Godal, B.F.; Westerlund, S.; Hjermann, Dag Øystein; Eftestøl, Trygve; Budka, M.; Gabrys, B.; Viarengo, A.; Barsiene, J. (2010). The marine environment IQ concept Developing an index of the quality of the marine environment based on biomarkers: Integration of pollutant effects on marine organisms.
  • Eftestøl, Trygve (2009). Controlling true positive rate in ROC analysis. 2009-09-13 - 2009-09-16.
  • Kjosmoen, Thomas; Ryen, Tom; Eftestøl, Trygve (2009). Exploring the combinatorics of motif alignments for accurately computing E-values from p-values. 2009-04-28 - 2009-04-30.
  • Thorsen, Kari Anne Haaland; Eftestøl, Trygve; Rong, Chunming; Steen, Petter Andreas (2009). An Integrated Information Sharing Structure for Resuscitation Data. 2009-05-26 - 2009-05-29.
  • Gundersen, Kenneth; Kvaløy, Jan Terje; Kramer-Johansen, Jo; Eftestøl, Trygve (2008). Using ECG-analysis to quantify the effect of increasing pre-shock pauses in chest compressions on the probability of ROSC.
  • Gundersen, Kenneth; Kvaløy, Jan Terje; Kramer-Johansen, Jo; Olasveengen, Theresa Mariero; Eftestøl, Trygve (2008). The effect of using within-patient correlation to improve shock outcome prediction.
  • Gundersen, Kenneth; Kvaløy, Jan Terje; Kramer-Johansen, Jo; Olasveengen, Theresa Mariero; Eilevstjønn, Joar; Eftestøl, Trygve (2008). The effect of using within-patient correlation to improve shock outcome prediction. 2008-05-22 - 2008-05-24.
  • Gundersen, Kenneth; Kvaløy, Jan Terje; Kramer-Johansen, Jo; Steen, Petter Andreas; Eftestøl, Trygve (2008). Using ECG-analysis to quantify the effect of increasing pre-shock pauses in chest compressions on the probability of ROSC. 2008-05-22 - 2008-05-24.
  • Kvaløy, Jan Terje; Skogvoll, Eirik; Eftestøl, Trygve; Gundersen, Kenneth; Kramer-Johansen, Jo; Olasveengen, Theresa Mariero; Steen, Petter Andreas (2008). Identifying factors influencing clinical state transitions in cardiac arrest resuscitation.
  • Woie, L.; Eftestøl, Trygve; Kvaløy, Jan Terje; Aarsland, Torbjørn; Tjelta, K.; Nilsen, DWT (2008). Intracardiac electrocardiographic (EGM) morphology changes in patients with implantable cardioverter defibrillator (ICD). 2008-05-18 - 2008-05-21.
  • Woie, L.; Eftestøl, Trygve; Kvaløy, Terje Jan; Aarsland, Torbjørn; Tjelta, K.; Nilsen, DWT (2008). Intracardiac electrocardiographic (EGM) morphology changes in patients with implantable cardioverter defibrillator (ICD).
  • Eftestøl, Trygve (2008). Signal processing and analysis of data from therapy of cardiac arrest patients. Simula Research Laboratory, Center for Biomedical Computing; 2008-12-10.
  • Johansen, Øystein; Ryen, Tom; Eftestøl, Trygve; Kjosmoen, Thomas; Ruoff, Peter (2008). Splice Site Prediction using Artificial Neural Networks. 2008-10-03 - 2008-10-04.
  • Olasveengen, Theresa Mariero; Eftestøl, Trygve; Gundersen, Kenneth; Steen, Petter Andreas; Wik, Lars; Sunde, Kjetil (2008). Ventricular fibrillation characteristics are different in patients with coronary heart disease compared to patients with a primary arrhythmia.
  • Eftestøl, Trygve (2007). A research experience in bioengineering in Norway. 2007-07-05 - 2007-07-06.
  • Eftestøl, Trygve (2007). Signal processing and pattern recognition in resuscitation science. 2007-07-05 - 2007-07-06.
  • Eftestøl, Trygve; Skogvoll, Eirik; Gundersen, Kenneth; Kvaløy, Jan Terje; Kramer-Johansen, Jo; Steen, Petter Andreas (2006). Information structuring and symbolic representation for analysis of resuscitation data. 2006-06-07 - 2006-06-09.
  • Gundersen, Kenneth; Kvaløy, Jan Terje; Eftestøl, Trygve; Steen, Petter Andreas; Kramer-Johansen, Jo; Wik, Lars; Sterz, Fritz; Losert, Heidrun; Aase, Sven Ole (2006). Improved shock outcome prediction from a random model.
  • Gundersen, Kenneth; Kvaløy, Jan Terje; Eftestøl, Trygve; Steen, Petter Andreas; Kramer-Johansen, Jo; Wik, Lars; Sterz, Fritz; Losert, Heidrun; Aase, Sven Ole (2006). Random effects in shock outcome prediction. 2006-05-10 - 2006-05-13.
  • Gundersen, Kenneth; Kvaløy, Jan Terje; Eftestøl, Trygve; Steen, Petter Andreas; Kramer-Johansen, Jo; Wik, Lars; Sterz, Fritz; Losert, Heidrun; Aase, Sven Ole (2006). Random effects in shock outcome prediction.
  • Kvaløy, Jan Terje; Eftestøl, Trygve; Gundersen, Kenneth; Skogvoll, Eirik; Kramer-Johansen, Jo; Steen, Petter Andreas (2006). Analysis of factors influencing clinical state transitions in cardiac arrest.
  • Skogvoll, Eirik; Eftestøl, Trygve; Gundersen, Kenneth; Kvaløy, Jan Terje; Kramer-Johansen, Jo; Steen, Petter Andreas (2006). The dynamics of cardiac arrest - clinical state transitions during CPR. 2006-05-10 - 2006-05-13.
  • Dragsund, Inge; Gundersen, Kenneth; Risdal, Martin; Kramer-Johansen, Jo; Abella, Ben; edelson, dana; Sterz, Fritz; Eftestøl, Trygve (2006). Analysing the dynamics of pulseless electrical activity during cardiopulmonary resuscitation. 2006-09-17 - 2006-09-20.
  • Eftestøl, Trygve (2006). Matematikk på liv og død?. 2006-11-29.
  • Eftestøl, Trygve (2006). Waveform analysis - the way to improve survival?. 2006-05-10 - 2006-05-13.
  • Eftestøl, Trygve; Ryen, Tom; Aase, Sven Ole; Strässle, Cassian; Boos, Marcus; Schuster, Guido M.; Ruoff, Peter (2006). Eukaryotic gene prediction by spectral analysis and pattern recognition techniques. 2006-06-07 - 2006-06-09.
  • Neurauter, Andreas; Eftestøl, Trygve; Kramer-Johansen, Jo; Wenzel, Volker; Lindner, Karl; Eilevstjønn, Joar; Myklebust, Helge; Steen, Petter Andreas; Strohmenger, Hans Ulrich (2006). Prediction of countershock success employing single feature analysis from ventricular fibrillation power bands or feature combination using neural networks.
  • Risdal, Martin; Losert, Heidrun; Sterz, Fritz; Aase, Sven Ole; Eftestøl, Trygve (2006). Using thoracic impedance for identification of return of spontaneous circulation during resuscitation. 2006-06-07 - 2006-06-09.
  • Risdal, Martin; Steen, Petter Andreas; Kramer-Johansen, Jo; Wik, Lars; Sterz, Fritz; Losert, Heidrun; Aase, Sven Ole; Eftestøl, Trygve (2006). Discriminating between PEA and pulse circulating rhythm using ECG.
  • Eftestøl, Trygve (2005). Signalbehandling og mønstergjenkjenning innen akuttmedisin. 2005-09-22.
  • Eftestøl, Trygve; Risdal, Martin; Eilevstjønn, Joar; Steen, Petter Andreas (2005). Advanced life support therapy on out-of-hospital cardiac arrest patients: Applying signal processing and pattern recognition methods.
  • Risdal, Martin; Aase, Sven Ole; Eftestøl, Trygve (2005). Arbitrary feature space dimensionality reduction with focus on loss of discrimination for two-class problems. 2005-09-22 - 2005-09-24.
  • Risdal, Martin; Aase, Sven Ole; Eftestøl, Trygve (2005). Examining the Potential of Using Thorax Impedance Measured by Automated External Defibrillators for Quantification of Circulation. 2005-09-25 - 2005-09-28.
  • Risdal, Martin; Eftestøl, Trygve; Aase, Sven Ole; Steen, Petter Andreas; Sleveland, Tone; Wik, Lars; Kramer-Johansen, Jo; Sterz, Fritz; Losert, Heidrun (2005). Improving rhythm classification using electrocardiogram and thorax impedance recorded by automated external defibrillators. 2005-09-22 - 2005-09-24.
  • Risdal, Martin; Losert, Heidrun; Nysæther, Jon; Aase, Sven Ole; Sterz, Fritz; Eftestøl, Trygve (2005). NON-INVASIVE VENTILATION MONITORING DURING CARDIOPULMONARY RESUSCITATION BY MEANS OF THORACIC IMPEDANCE. 2005-11-20 - 2005-11-25.
  • Risdal, Martin; Losert, Heidrun; Nysæther, Jon; Aase, Sven Ole; Sterz, Fritz; Eftestøl, Trygve (2005). VENTILATION CLASSIFICATION FOR CARDIOPULMONARY RESUSCITATION QUALITY MONITORING USING THORACIC IMPEDANCE. 2005-11-20 - 2005-11-25.
  • Risdal, Martin; Stavland, Mette; Aase, Sven Ole; Eftestøl, Trygve (2005). IMPEDANCE-BASED VENTILATION DETECTION DURING CARDIOPULMONARY RESUSCITATION USING A NEURAL NETWORK. 2005-11-20 - 2005-11-25.
  • Eftestøl, Trygve; Wik, Lars; Sunde, Kjetil; Steen, Petter Andreas (2004). CPR causes changes in predictors of VF defibrillation success during out-of-hospital cardiac arrest. 2004-09-08 - 2004-09-11.
  • Eilevstjønn, Joar; Eftestøl, Trygve; Kramer-Johansen, Jo; Steen, Petter Andreas (2004). Reducing the no flow time in automated external defibrillation. 2004-09-08 - 2004-09-11.
  • Watson, Jamie; Uchaipichat, Nopadol; Addison, Paul S; Clegg, Gareth R; Robertson, Colin; Eftestøl, Trygve; Steen, Petter Andreas (2004). Novel wavelet transform methods predict defibrillation success for out-of-hospital cardiac arrest. 2004-09-08 - 2004-09-11.
  • Eftestøl, Trygve (2003). Ingeniøren, kan de hjelpe oss? Engineers - can they help us?. 2003-09-04 - 2003-09-06.
  • Eilevstjønn, Joar; Eftestøl, Trygve; Steen, Petter Andreas (2003). Reducing The Hands-Off Interval By Filtering CPR Artefacts In ECG. 2003-09-04 - 2003-09-06.
  • Addison, Paul S; Uchaipichat, Nopadol; Watson, Jamie; Clegg, Gareth R; Robertson, Colin; Steen, Petter Andreas; Eftestøl, Trygve (2002). Positional Depedence of Time-Frequency Information in the Electrocardiograph used for the Prediction of Successful Defibrillation. 2002-12-04 - 2002-12-08.
  • Eftestøl, Trygve; Sunde, Kjetil; Steen, Petter Andreas (2002). The effects of interrupting precordial compressions on the calculated probability of defibrillation success in out-of-hospital cardiac arrest patients. 2002-10-02 - 2002-10-05.
  • Eilevstjønn, Joar; Husøy, John Håkon; Eftestøl, Trygve; Aase, Sven Ole; Steen, Petter Andreas (2002). Multichannel adaptive filtering using an efficient matching pursuit-like algorithm for removal of CPR artifacts in ECG signals. 2002-05-13 - 2002-05-17.
  • Uchaipichat, Nopadol; Addison, Paul S; Watson, Jamie; Clegg, Gareth R; Robertson, Colin; Steen, Petter Andreas; Eftestøl, Trygve (2002). Wavelet Power Spectrum Analysis of Cardiac Arrhythmias: Ventricular Fibrillation. 2002-11-22 - 2002-11-23.
  • Uchaipichat, Nopadol; Watson, Jamie; Addison, Paul S; Clegg, Gareth R; Robertson, Colin; Steen, Petter Andreas; Eftestøl, Trygve (2002). Optimal pre-shock signal length for time-frequency classification used in the predicition of successful defibrillation. 2002-12-04 - 2002-12-07.
  • Addison, Paul S; Uchaipichat, Nopadol; Watson, Jamie; Clegg, Gareth R; Robertson, Colin; Steen, Petter Andreas; Eftestøl, Trygve (2001). Wavelet power spectrum-based prediction of successful defibrillation from ventricular fibrillation. 2001-10-25 - 2001-10-28.
  • Sunde, Kjetil; Eftestøl, Trygve; Askenberg, Christian; Steen, Petter Andreas (2001). Kvalitetsvurdering av avansert hjerte-lunge-redning i ambulansetjenesten i Oslo ved analysering av defibrillatorens datamodul.
  • Sunde, Kjetil; Eftestøl, Trygve; Steen, Petter Andreas (2001). Prehospital hjertestans - resultater etter to års Utstein-registrering ved ambulansetjenesten i Oslo.
  • Aase, Sven Ole; Husøy, John Håkon; Eftestøl, Trygve (2000). Optimum CPR artefact removal in human ECG signals. 2000-06-26 - 2000-06-28.
  • Eftestøl, Trygve; Aase, Sven Ole; Husøy, John Håkon (2000). A method for detection of signal harmonics in the spectrum.
  • Eftestøl, Trygve; Aase, Sven Ole; Husøy, John Håkon (2000). Spectral characterization of ECG in out-of-hospital cardiac arrest patients.
  • Eftestøl, Trygve; Sunde, Kjetil; Aase, Sven Ole; Husøy, John Håkon; Steen, Petter Andreas (2000). Monitoring the "probability of successful defibrillation" during CPR in out-of-hospital cardiac arrested patients.
  • Eftestøl, Trygve; Sunde, Kjetil; Aase, Sven Ole; Husøy, John Håkon; Steen, Petter Andreas (2000). Predicting defibrillation outcome from VF-characteristics in out-of-hospital cardiac arrest.
  • Sunde, Kjetil; Eftestøl, Trygve; Steen, Petter Andreas (2000). Survival rate depends on place of collapse in patients with out-of-hospital cardiac arrest in Oslo.
  • Eftestøl, Trygve; Aase, Sven Ole; Husøy, John Håkon (1999). Characterisation og changes in cardiac arrhythmias using spectral parameters.
  • Eftestøl, Trygve; Aase, Sven Ole; Husøy, John Håkon (1999). Spectral flatness measure for characterising changes in cardiac arrhythmias.
  • Eftestøl, Trygve; Aase, Sven Ole; Husøy, John Håkon; Chang, H. K.; Zhang, Y. T. (1999). A flexible pattern recognition system for analysis of ECG and related demographics and annotations.
  • Eftestøl, Trygve; Øien, G.E. (1998). ECG rhythm classification using artificial neural networks.