Computers in Cardiology 2002, Volume 29

Memphis, Tennessee, USA

M1	Rossana Degani Young Investigator Award
S21	Atrial Fibrillation
S22	Circulatory Control
S23	Left-Ventricular Echo Imaging
S24	ECG Analysis
M2	Plenary Session
S41	Challenge 2002-I
S42	Signals and Systems
S43	Left-Ventricular Function
S44	Arrhythmia
S51	Challenge 2002-II
S52	Ventricular Fibrillation
S53	Cardiology Databases
S54	Telemedicine I
S61	High Resolution ECG
S62	Electrical Activation
S63	ECG - Ischemia
S64	Telemedicine II
P71	Echocardiography
P72	Cardiology Databases
P73	Decision Support
P74	HIS and PACS
P75	Heart Rate Variability
P76	Cardiovascular Control
P77	ECG
P78	Computer Models
P79	Cardiac Mechanics
P7A	Sleep Analysis
P7B	Other Topics
M3	Plenary
S91	Heart Rate Variability I
S92	Atrial Arrhythmias
S93	3D Imaging
S94	Decision Support
SA1	Heart Rate Variability II
SA2	Repolarisation
SA3	Cardiac Mechanics
SA4	Other Topics

M1 Rossana Degani Young Investigator Award

Table of Contents

Automated Quantification of Regional Myocardial Perfusion by Analysis of Contrast-Enhanced Echocardiographic Images 1
EG Caiani, CE Korcarz, KA Collins, S Cerutti, RM Lang, V Mor-Avi
A Novel Reduced Field-of-View Technique for Cardiac MRI: NoQuist 5
D Moratal-Pérez, ME Brummer, CY Hong, RI Pettigrew, J Millet-Roig, WT Dixon
Accuracy and Speed Considerations of a New Numerical Method for Modeling Cardiac Excitation 9
D Allexandre, NF Otani
The Influence of QRS Cancellation on Signal Characteristics of Atrial Fibrillation in the Surface Electrocardiogram 13
Q Xi, AV Sahakian, S Swiryn

S21 Atrial Fibrillation

Table of Contents

Shape Characterization of Atrial Fibrillation using Time-Frequency Analysis 17
M Stridh, L Sörnmo
Vector Analysis of Atrial Activity from Surface ECGs Recorded During Atrial Fibrillation 21
J Ng, AV Sahakian, S Swiryn
Atrial Fibrillation, Atrial Flutter and Normal Sinus Rhythm Discrimination by Means of Blind Source Separation and Spectral Parameters Extraction 25
JJ Rieta, J Millet-Roig, V Zarzoso, F Castells, C Sánchez, R García-Civera, S Morell
Comparison of Atrial Rhythm Extraction Techniques for the Estimation of the Main Atrial Frequency from the 12-lead Electrocardiogram in Atrial Fibrillation 29
P Langley, M Stridh, JJ Rieta, L Sörnmo, J Millet-Roig, A Murray
Packet Wavelet Decomposition: an Approach for Atrial Activity Extraction 33
C Sánchez, J Millet, JJ Rieta, F Castells, J Ródenas, R Ruiz-Granell, V Ruiz
Wavelets Extrema Representation for QRS-T Cancellation and P Wave Detection 37
L Senhadji, F Wang, AI Hernández, G Carrault

S22 Circulatory Control

Table of Contents

Cardiovascular Response to Sinusoidal Neck Suction in Healthy Volunteers and Orthostatic Intolerance Patients 41
L Widesott, L Bernardi, R Furlan, L Diedrich, R Antolini, G Nollo, A Diedrich
Interaction between the Arterial Baroreflex and a Hypertensive Stressor: a Mathematical Model 45
MC Melgers, CA Swenne, H van de Vooren, EE van der Wall
Simulating the Interactions among Vasomotion Waves of Peripheral Vascular Districts 49
G Baselli, A Porta
Effects of Prolonged Bed Rest on the Total Peripheral Resistance Baroreflex 53
X Xiao, R Mukkamala, N Sheynberg, GH Williams, RJ Cohen
Baroreflex Contribution to Linear and Nonlinear Blood Pressure Heart Rate Coupling in Daily Life: an Assessment by Cross Mutual Information 57
M Di Rienzo, P Castiglioni, G Parati, U Zwiener, B Pompe, D Hoyer
Need of Causal Analysis for Assessing Phase Relationships in Closed Loop Interacting Cardiovascular Variability Series 61
G Nollo, L Widesott, L Faes, A Porta, R Antolini

S23 Left-Ventricular Echo Imaging

Table of Contents

Tracking of the Left Ventricle in Contrast Enhanced Echocardiography by Anisotropic Filtering and Active Contours Algorithm 65
MA Morales, V Positano, O Rodriguez, M Passera, M Lombardi, D Rovai
SPEQLE (Software Package for Echocardiographic Quantification LEuven): an Integrated Approach to Ultrasound-Based Cardiac Deformation Quantification 69
P Claus, J D'hooge, TM Langeland, B Bijnens, GR Sutherland
Changes in Left Ventricular Size During Parabolic Flights by Two-Dimensional Echocardiography and Level Set Method 73
C Corsi, G Saracino, C Lamberti, S Cerutti, O Bailliart, B Cholley, A Capderou, P Vaida, EG Caiani
A Geometric Deformable Model for Echocardiographic Image Segmentation 77
X Hang, NL Greenberg, JD Thomas
Signal Heterogeneity in Contrast-Enhanced Echocardiographic Imaging Despite Uniform Concentration of the Contrast Agent 81
EM Ferdeghini, MA Morales, O Rodriguez, A L'Abbate, D Rovai

S24 ECG Analysis

Table of Contents

A New Method for Evaluating ECG Signal Quality for Multi-Lead Arrhythmia Analysis 85
JY Wang
Analysis of Atrial Fibrillation after CABG using Wavelets 89
N Maglaveras, I Chouvarda, G Dakos, V Vasilikos, S Mochlas, G Louridas
Model-Based Interpretation of Cardiac Beats by Evolutionary Algorithms 93
AI Hernández, G Carrault, F Mora
The Effects of In Utero Cocaine-Exposure on the Heart Rate and Heart Rate Variability of Near and Full Term Infants following Orthostatic Stress 97
V John, MR Neuman, A Talati, H Bada
Open Source ECG Analysis 101
P Hamilton
Modelling T-End in Holter ECGs by 2-Layer Perceptrons 105
W Bystricky, A Safer

M2 Plenary Session

Table of Contents

Automatic Classification and Differentiation of Atherosclerotic Lesions in Swine using IVUS and Texture Features 109
P Brathwaite, A Nagaraj, B Kane, DD McPherson, EL Dove
Volumetric Coronary Plaque Composition using Intravascular Ultrasound: Three-Dimensional Segmentation and Spectral Analysis 113
JD Klingensmith, A Nair, BD Kuban, DG Vince
Improved Discrimination of VT from SVT in Dual-Chamber ICDs by Combined Analysis of Dual-Chamber Intervals and Ventricular Electrogram Morphology 117
ML Brown, JL Christensen, JM Gillberg
Automatic Identification of Implantable Cardioverter-Defibrillator Lead Problems using Intracardiac Electrograms 121
BD Gunderson, AS Patel, CA Bounds
RR Interval Time Series Modeling: The PhysioNet/Computers in Cardiology Challenge 2002 125
GB Moody

S41 Challenge 2002-I

Table of Contents

Characterizing Artefact in the Normal Human 24-Hour RR Time Series to Aid Identification and Artificial Replication of Circadian Variations in Human Beat to Beat Heart Rate using a Simple Threshold 129
GD Clifford, PE McSharry, L Tarassenko
Classifying Simulated and Physiological Heart Rate Variability Signals 133
N Wessel, H Malberg, U Meyerfeldt, A Schirdewan, J Kurths
Multiscale Entropy to Distinguish Physiologic and Synthetic RR Time Series 137
M Costa, AL Goldberger, CK Peng
CinC Challenge 2002 Undertaken by Non-Stationary and Fractal Techniques 141
JC Echeverría, MS Woolfson, JA Crowe, BR Hayes-Gill
A Multifractal Inverse Problem Applied to Heart Rate Data Synthesis 145
DC Lin, J Thevaril
Simulate Heart Rate Variability in Different Physiological Conditions 149
DC Lin

S42 Signals and Systems

Table of Contents

A Signals and Systems and Object Oriented Programming Approach to Development of ECG Analysis Software 153
SN Mohammad, AK Sureka, DR Ely, JM Jenkins
Evaluation of an Event Classifier for Pacemaker Ventricular Evoked Response Detection 157
SE Greenhut, TA Nappholz, GW Schneider, C Militello, JJ Espinosa Reynoso
On Cardiac Activity Characterization from Implantable Cardioverter Defibrillator Electrogram Analysis: is Far-Field Better? 161
A Casaleggio, P Rossi, A Dall'Acqua, A Faini, G Sartori, G Musso, R Mureddu, E Casali, V Malavasi, S Chierchia
Adaptive Discrete ECG Representation - Comparing Variable Depth Decimation and Continuous Non-Uniform Sampling 165
P Augustyniak
Pattern Complexity and Nonlinear Dynamics in RR-Sequences 169
A Ripoli, M Emdin, C Passino, L Zyw
A Computerized Fuzzy Logic System for Evaluation of the Cardiovascular Autonomic Function Based on Multiple Functional Tests 173
HS Carvalho, LF Junqueira, J Souza-Neto

S43 Left-Ventricular Function

Table of Contents

Magnetic Resonance Image Segmentation and Heart Motion Tracking with an Active Mesh Based System 177
L Legrand, C Bordier, A Lalande, P Walker, F Brunotte, C Quantin
Automatic Border Detection Through a Cardiac Cycle to Analyze Left Ventricular Function 181
P Negrini, P Tomassini, G Cella, M Magrini, M Ercolani, A Mazzarisi, V Gemignani, A Ciampa, P Marcheschi, P Marraccini
Parameters for Characterizing Diastolic Function with Cardiac Magnetic Resonance Imaging 185
O Grebe, M Lehn, H Neumann, F Schwenker, J Wöhrle, M Höher, V Hombach, HA Kestler
Using Wavelets for Smoothing and Denoising of Gated Blood Pool Images 189
O Blagosklonov, L Comas, R Sabbah, J Verdenet, M Baud, JC Cardot
Knowledge-Guided Automatic Segmentation of the Left Ventricle from MR 193
A Pednekar, IA Kadadiaris, R Muthupillai, S Flamm
Optimal Myocardial Boundary Estimation for MR Cardio Perfusion Measurements using Sensitivity Analysis 197
LJ Spreeuwers, F Wierda, M Breeuwer

S44 Arrhythmia

Table of Contents

A Real Time QRS Complex Classification Method using Mahalanobis Distance 201
JCTB Moraes, MO Seixas, FN Vilani, EV Costa
A QRS Complex Detection Algorithm using Electrocardiogram Leads 205
JCTB Moraes, MM Freitas, FN Vilani, EV Costa
Enhancing Feature Extraction for VF Detection using Data Mining Techniques 209
A Rosado-Muñoz, G Camps-Valls, J Guerrero-Martínez, JV Francés-Villora, J Muñoz-Marí, AJ Serrano-López
Ventricular Fibrillation Detection using a Leakage/Complexity Measure Method 213
JCTB Moraes, M Blechner, FN Vilani, EV Costa
Screening for Paroxysmal Atrial Fibrillation using Atrial Premature Contractions and Spectral Measures 217
B Hickey, C Heneghan
Are Nonlinear Ventricular Arrhythmia Characteristics Lost, as Signal Duration Decreases? 221
RJ Povinelli, FM Roberts, MT Johnson, KM Ropella

S51 Challenge 2002-II

Table of Contents

Method for Generating an Artificial RR Tachogram of a Typical Healthy Humans over 24-hours 225
PE McSharry, G Clifford, L Tarassenko, LA Smith
Simulating Healthy Humans Heart Rate: a Markovian Model 229
CC Yang, CH Chang, SS Hseu, HW Yien
Simulation of Cardiac RR Interval Time Series 233
EJ Bowers, P Langley, MJ Drinnan, J Allen, FE Smith, A Murray
Heart Rate Variability Characteristics Required for Simulation of Interval Sequences 237
FE Smith, EJ Bowers, P Langley, J Allen, A Murray
Dynamic Features of the Normal Heart Rate Variability 241
T Smuc, I Maric, G Bosanac, D Gamberger, N Bogunovic, G Krstacic

S52 Ventricular Fibrillation

Table of Contents

A Fibroblast-Myocyte Model which Accounts for Slow Conduction and Fractionated Electrograms in Infarct Border Zones 245
C Vásquez, RA Siddiqui, A Moreno, EJ Berbari
Ventricular Fibrillation in Rats with Cardiac Fibrosis 249
S Marak, AL de Jongh
Simulation of Figure-of-Eight Reentry During Acute Inhomogeneous Myocardial Ischemia: Role of ATP-Sensitive Potassium Current 251
JM Ferrero (Jr), B Trenor, J Saiz, B Rodriguez
Low-Voltage Defibrillation in Bidomain Virtual Ventricular Tissue: Effect of the Bath 255
OV Aslanidi, OA Mornev, AV Holden
Large-Scale Modeling of Cardiac Electrophysiology 259
JB Pormann, JA Board, DJ Rose, CS Henriquez

S53 Cardiology Databases

Table of Contents

An Automatic Procedure to Convert ECGs from Graph Paper to Digital Signals 263
M Paterni, A Belardinelli, A Benassi, C Carpeggiani, M Demi
Recording Complex Patient Data in the EP-Laboratory using Cross Reference Algorithm 267
O Merl, R Peschorn, F Freihoff, W Kaltenbrunner, U Eidher, K Steinbach
An Automated, Web-Enabled and Searchable Database System for Archiving Electrogram and Related Data from Implantable Cardioverter Defibrillators 269
W Zong, P Wang, B Leung, GB Moody, RG Mark

S54 Telemedicine I

Table of Contents

A Generic Secure Internet-Based Facility to Support Multiple Registries using Modern Encryption Technology and Client Certificates 273
WRM Dassen, ED Gommer, CCW Bonnemayer, HJ Spruijt, WA Dijk, MH Baljon
TeleTeaching and TeleGuiding Using an IntraNetwork: a Feasibility Study 277
N Bruining, B Hendriks, L Boelhouwer, S de Winter, M Patijn, R Hamers, N van der Putten, JRTC Roelandt
Using Contact Centers in Tele-Management and Home Care of Congestive Heart Failure Patients: The CHS Experience 281
N Maglaveras, G Gogou, I Chouvarda, V Koutkias, I Lekka, D Adamidis, C Karvounis, G Louridas, EA Balas
Open ECG: a European Project to Promote the SCP-ECG Standard, a Further Step Towards Interoperability in Electrocardiography 285
CE Chronaki, F Chiarugi, PJ Lees, M Bruun-Rasmussen, F Conforti, R Ruiz Fernandez, C Zywietz
Ambient Intelligence and Pervasive Systems for the Monitoring of Citizens at Cardiac Risk: New Solutions from the EPI-MEDICS Project 289
F Gouaux, L Simon-Chautemps, J Fayn, S Adami, M Arzi, D Assanelli, MC Forlini, C Malossi, A Martinez, J Placide, GL Ziliani, P Rubel

S61 High Resolution ECG

Table of Contents

Analysis of Non-Invasively Recorded His-Purkinje Signals from Patients with Myotonic Muscular Dystrophy 293
H Park, W Groh, W Combs, EJ Berbari
Decision Fusion of Micro-Variability and Signal Averaged ECG Parameters from the QRS Complex with RBF Networks 297
HA Kestler, A Müller, V Hombach, J Wöhrle, O Grebe, G Palm, M Höher, F Schwenker
Bi-Dimensional Cross-Correlation of Spectro-Temporal Maps for the Detection of Beat-to-Beat Variable Late Potentials 301
E Laciar, R Jané
Analysis of Support Vectors Helps to Identify Borderline Patients in Classification Studies 305
F Schwenker, HA Kestler

S62 Electrical Activation

Table of Contents

A Comparison of Methods for Estimating Endocardial Potentials from a Noncontact Probe 309
RD Throne, LG Olson, G Bu, JR Windle
ECG Source Location Clustering Based on Position Vectors and Forward Transfer Matrices 313
N Takano, HG Puurtinen, M Rautiainen, J Hyttinen, J Malmivuo
A Computer Modeling Study of the Localization of Cardiac Optical Mapping at Discrete Depths Below the Tissue Surface 317
VK Ramshesh, JH Dumas, SB Knisley
Simulating the ECG of Ventricular Tachyarrhythmias 321
RH Clayton, AV Holden

S63 ECG - Ischemia

Table of Contents

Advanced Detection of ST Segment Episodes in 24-Hour Ambulatory ECG Data by Automated Tracking of Transient ST Segment Reference Level 325
A Smrdel, F Jager
Robust Measure of ST/HR Hysteresis in Stress Test ECG Recordings 329
R Bailón, S Olmos, P Serrano, J García, P Laguna
Development of an Experimental Method for Long-Term Electrocardiographic Recordings in a Heart Failure Rabbit Model 333
SAC Schuckers, P Raphisak, T Yan, ME Schuckers
Effects of Filtering on Automatic Repolarisation Measurements Using Magnetocardiography 337
FE Smith, P Langley, L Trahms, U Steinhoff, JP Bourke, A Murray

S64 Telemedicine II

Table of Contents

Desktop Echocardiography 341
N van der Putten, R Hamers, S Nelwan, W Vletter, F ten Cate, WA Dijk, MH Baljon
High-Secured Cardiac Imaging Network: Imaging CardioWeb Institute 345
O Blagosklonov, E Itti, R Sabbah, P Guiderdoni, M Meignan, JC Cardot, R Itti
Real-Time Cardiac Monitoring over a Regional Health Network: Preliminary Results from Initial Field Testing 347
F Chiarugi, M Spanakis, PJ Lees, CE Chronaki, M Tsiknakis, A Traganitis, SC Orphanoudakis

P71 Echocardiography

Table of Contents

Mapping the Left Ventricular Cavity by Analysis of Images Reconstructed from 3D Transoesophageal Echocardiography 351
AJ Sims, J Pemberton, T Irvine, A Kenny, A Murray
Computer-Assisted Detection of Ischemia Utilizing Echocardiograms Before and After Stress 355
PK Singh, SJ Simoff, L Holley, L Thomas, D Richards
Automatic Measurement of Carotid Diameter and Wall Thickness in Ultrasound Images 359
MA Gutierrez, PE Pilon, SG Lage, L Kopel, RT Carvalho, SS Furuie
Modelling Blood Flow in Coronary Arteries with Junctions 363
S Corney, PR Johnston, D Kilpatrick

P72 Cardiology Databases

Table of Contents

New Data Acquisition using Variable Graphic Display of the Coronary Vessel Anatomy for Rapid and Easy Creation of Angiography Reports 367
J Petersen, M Petersen, A Lauk, V Brand, FJ Neumann
An Informative System for Structured Data Management to Build a Cardiological Multidimensional Database 369
S Dalmiani, A Taddei, M Glauber, M Emdin
Evaluating Connectivity for a Heart Failure Database 373
JE Bosmans, MH Baljon, WRM Dassen, ET van der Velde, O Labots
Uniform Pacemaker and ICD Information System in The Netherlands 377
CAM Hooijschuur, WA Dijk, W van der Velde, B Sanon, C Ammeraal, WRM Dassen, HJ Spruijt

P73 Decision Support

Table of Contents

Electronic Medical Records in a Cardiological Outpatient Clinic 381
MA Morales, S Dalmiani, C Carpeggiani, A Macerata, S Ghione

P74 HIS and PACS

Table of Contents

Integration of Heterogeneous Systems via DICOM and the Clinical Image Access Service 385
RA Moreno, SS Furuie
Implementing National Guidelines on Risk Prediction and Primary Prevention of Coronary Heart Disease in a Cardiology Information System 389
AA Becht, ET van der Velde, DE Atsma, WHGJ Hoekstra, EB van Dieren, LS Jonker
An Enhanced DTC Component for the EPD-CAR Project 393
WA Dijk, W van der Velde, WRM Dassen, HJ Spruijt, N van der Putten, ET van der Velde, MH Baljon
Application Form Based Optimization of the Echo Lab Workflow 397
J Ruys, J Koster, WA Dijk, W van der Velde, GAJ Jessurun, DJ van Veldhuisen
Data Standards in Echocardiography: a Dutch Experience 401
N van der Putten, J Koster, W Vletter, WA Dijk, WRM Dassen, HJ Spruijt, MH Baljon, M Gerritsen
A Flexible Storage Architecture for Large PACS 405
SS Furuie, N Bertozzo, M Yamaguti, MA Gutierrez
Integrated Access to Function Test Results from within a Cardiology Information System 409
ET van der Velde, WHGJ Hoekstra, TA Witteman, C Brobbel, DE Atsma, MH Baljon
Support Vector Machines and Genetic Algorithms for Detecting Unstable Angina 413
J Sepúlveda-Sanchis, G Camps-Valls, E Soria-Olivas, S Salcedo-Sanz, C Bousoño-Calzón, G Sanz-Romero, J Marrugat de la Iglesia

P75 Heart Rate Variability

Table of Contents

A Computationally Efficient Algorithm for On-Line Spectral Analysis of Beat-to-Beat Signals 417
P Castiglioni, M Di Rienzo, H Yosh
Multifractal Analysis of the Day and Night Characteristics of Heart Rate Variability 421
SK Ramchurn, A Murray
Early Effect of the Suppression of the Smoking Habit on the Heart Rate Variability 425
J Guerrero, M Segarra, JF Chorro, M Bataller, A Rosado, J Espí
Analysis of the Respiratory and Cardiac Systems Coupling in Pyramidal Exercise using a Time-Varying Model 429
O Meste, G Blain, S Bermon
Heart Rate Variability During Gravity Transitions 433
B Seps, F Beckers, AE Aubert
Multiple Factor Analysis as a Tool for Studying the Effect of Physical Training on the Autonomic Nervous System 437
S Wong, H Gauvrit, N Cheaib, F Carré, G Carrault
Non-linear Dynamics of Heart Rate Variability in Athletes: Effect of Training 441
AE Aubert, F Beckers, B Seps
Early Detection of Essential Hypertension by Time-Frequency Analysis 445
LR Davrath, Y Goren, I Pinhas, D David, S Akselrod

P76 Cardiovascular Control

Table of Contents

Dynamic Non-Linear Analysis of Heart Rate Variability in Patients with Aortic Stenosis 449
R Carvajal, M Vallverdú, R Baranowski, A Orlowska-Baranowska, JJ Zebrowski, P Caminal
The Dimension of 2D and 3D Poincaré Plots obtained from 24 Hour ECG Registrations 453
J Haaksma, J Brouwer, WA Dijk, WRM Dassen, DJ van Veldhuisen
Spectral Analysis of Multiunit Action Potential Trains of Muscle Sympathetic Nerve Activity in Humans 457
RJ Brychta, W Charoensuk, L Bernardi, R Furlan, RG Shiavi, A Diedrich
Identification of Open-Loop Transfer Functions in Closed-Loop Baroreflex System using Random Breathing in Humans 461
T Yingthawornsuk, T Kawada, T Sato, M Inagaki, K Sunagawa, J Cox, RG Shiavi, A Diedrich
Frequency Coherence Mapping of Termination of Induced Canine Atrial Fibrillation 465
HW Tso, T Kao, SA Chen, CT Tai
Effects of Posture and Breathing Frequency on Baroreflex Measurements 469
EJ Bowers, A Murray

P77 ECG

Table of Contents

Hybrid Wavelet Packet - Support Vector Classification of Atrial Activation Patterns 473
DJ Strauss, J Jung
Computerized Algorithm for Baseline Estimation of Fetal Heart Rate 477
L Jiménez, R González, MJ Gaitán, S Carrasco, C Vargas
A Hybrid Two-Stage Approach for Paroxysmal Atrial Fibrillation Prognosis Problem 481
KS Lynn, HD Chiang
Arrhythmia Classification using the RR-Interval Duration Signal 485
MG Tsipouras, DI Fotiadis, D Sideris
Use of Myocardial Electrical Impedance to Assess the Efficacy of Preconditioning 489
CL del Río, R Dzwonczyk, B Clymer, T McSweeney, H Awad, P Czerwinski, MB Howie
Analysis of the Maximum A Posteriori Approach to the Inverse Problem of Electrocardiography for Different Depolarization Sequences 493
G Bu, RD Throne, LG Olson, JR Windle

P78 Computer Models

Table of Contents

Computer Simulation of Electric Fields at the Junction Terminal Crest - Pectinate Muscle 497
G Plank, M Monserrat, J Saiz, E Hofer
Investigation of the Source Space of Electrocardiography and Magnetocardiography using Isotropic and Anisotropic Thorax Models 501
M Nalbach, O Skipa, FB Sachse, O Dössel
The Simulation Study of the Influence of Electrical Asynchrony on Regional Mechanics of the Ischemic Ventricle using Electromechanical Heart Models 505
L Xia, M Huo, F Liu
Organophosphonate-Induced Toxicity: Computer Study of Reentry in Atrial Tissue 509
CK Zoltani, SI Baskin

P79 Cardiac Mechanics

Table of Contents

Arterial Wall Diameter and Viscoelasticity Variability 513
LG Gamero, RL Armentano, J Levenson
Non-Invasive Assessment of Hemodynamics in Adolescents with Arterial Tonometry and Doppler Ultrasound during a Conventional Stress Test 517
K Matthys, D Vanhercke, S Van Aken, K De Groote, I Coomans, P Verdonck
Computer Systems Analysis of the Cardiovascular Mechanisms of Reentry Orthostasis in Astronauts 521
RL Summers, TG Coleman

P7A Sleep Analysis

Table of Contents

Activity-Based Sleep-Wake Identification in Infants 525
NA Sazonova, ES Sazonov, SAC Schuckers
Detection of Central and Obstructive Sleep Apnea in Children using Pulse Transit Time 529
J Pagani, MP Villa, G Calcagnini, E Lombardozzi, F Censi, S Poli, P Bartolini, V Barbaro, R Ronchetti
Feasibility of a Simple Method for Identifying Sleep Periods from Holter Recordings 533
C Williams, PK Stein, PP Domitrovich, TR Taylor

P7B Other Topics

Table of Contents

Detection of the First Heart Sound using a Time-Delay Neural Network 537
T Oskiper, R Watrous
Myocardial Electrical Impedance Responds to Ischemia and Reperfusion in Humans 541
R Dzwonczyk, C del Rio, DA Brown, RE Michler, RK Wolf, MB Howie
Respiratory Motion Correction for Geometrically Correct Three-Dimensional Reconstructions of Coronary Arteries 545
JD Klingensmith, DG Vince
Microprocessor-Controlled Laser Scanner System for Multiwavelength Cardiac Optical Mapping 549
J Liau, SB Knisley
Cardiovascular Risk Functions and their Practical Relevance: To Trust or Not To Trust 553
A Conti, AA Conti, GF Gensini

M3 Plenary

Table of Contents

Ubiquitous Mobile Access to Real-Time Patient Monitoring Data 557
SP Nelwan, TB van Dam, P Klootwijk, SH Meij
A Computational Model-Based Validation of Guyton's Analysis of Cardiac Output and Venous Return Curves 561
R Mukkamala, RJ Cohen, RG Mark
Time for QT Adaptation to RR Changes and Relation to Arrhythmic Mortality Reduction in Amiodarone-Treated Patients 565
E Pueyo, P Smetana, K Hnatkova, P Laguna, M Malik
T Wave Alternans and Acute Ischemia in Patients Undergoing Angioplasty 569
JP Martínez, S Olmos, P Laguna

S91 Heart Rate Variability I

Table of Contents

Polysomnographic Sleep Recording with Simultaneously Acquired 12 Lead ECGs: a Study for Detection and Validation of Apnea Related ECG Changes 573
C Zywietz, B Widiger, T Penzel
A System for Comprehensive ECG Waveform and Trend Analysis Accompanying Polysomnographic Sleep Apnea Detection 577
C Zywietz, B Widiger, R Fischer, G Joseph
The Increase of Respiratory Sinus Arrhythmia during Low Dose Atropine is not due to Changes of the Sinus Node Transfer Function or Baroreflex 581
A Porta, N Montano, M Pagani, A Malliani, P van de Borne, VK Somers
Comparison of Heart Rate Variability Measurements in Infants 585
X Xu, SAC Schuckers, MJ Corwin
Limitations of Power-Spectrum and Time-Domain Analysis of Heart Rate Variability in Short-Term ECG Recorded using Telemetry in Unrestrained Rats 589
JP Couderc, A Elder, C Cox, W Zareba, G Oberdorster

S92 Atrial Arrhythmias

Table of Contents

Morphology-Based Measurement of Activation Time in Human Atrial Fibrillation 593
L Sandrini, L Faes, F Ravelli, R Antolini, G Nollo
Quantitative Assessment of Regularity and Synchronization of Intracardiac Recordings during Human Atrial Fibrillation 597
L Faes, L Sandrini, F Ravelli, R Antolini, G Nollo
Feasibility of Atrial Activation Time Imaging 601
F Hanser, B Tilg, R Modre, G Fischer, B Messnarz, F Hintringer, FX Roithinger
Surface-ECG Atrial Activity Extraction via Blind Source Separation: Spectral Validation 605
J Millet-Roig, JJ Rieta, V Zarzoso, A Cebrián, F Castells, C Sánchez, R García-Civera

S93 3D Imaging

Table of Contents

Comparison of Segmentation Methods for Analysis of Endocardial Wall Motion with Real-Time Three-Dimensional Ultrasound 609
ED Angelini, D Hamming, S Homma, JW Holmes, AF Laine
Fast Interactive Real-Time Volume Rendering of Real-Time Three-Dimensional Echocardiography: an Implementation for Low-End Computers 613
G Saracino, NL Greenberg, T Shiota, C Corsi, C Lamberti, JD Thomas
3D Deformable Multiresolution Interactive LV Model 617
M Mero, A Susin
Left Ventricle Volume Estimation from 3D SPECT Reconstruction 621
O Garcia-Panyella, A Susin
Automatic Registration and Superimposed Display of CAG and Bull's Eye Map of Myocardial SPECT 625
R Haraguchi, N Sugimoto, S Eiho, Y Ishida
3D Navigator for Localization of Peripheral Coronary Segments by Magnetic Resonance Imaging Angiography 629
P Marcheschi, M Lombardi, A Mazzarisi, R Testa, A Pingitore, A Benassi, P Marraccini

S94 Decision Support

Table of Contents

Use of Intelligent Agents in the Diagnosis of Cardiac Disorders 633
DL Hudson, ME Cohen
On-Line Integration of Cardiological Data to Support Medical Decision Making in Patients with Ischemic Heart Disease 637
GA L'Abbate, C Carpeggiani, C Marchesi, A L'Abbate
MIMIC II: A Massive Temporal ICU Patient Database to Support Research in Intelligent Patient Monitoring 641
M Saeed, C Lieu, G Raber, RG Mark
Image: A Cardiological Database. Twenty Years of Experience 645
C Carpeggiani, P Landi, C Michelassi, E Barberini, A Niccolini, A L'Abbate
ABBIOS (ABbott BIOsignal System): A Workbench System Software for Data Mining in Biosignals, with Applications in Drug Research and Development 649
A Safer, W Bystricky, M Schweizer
Methods and Results in Characterizing Electronic Stethoscopes 653
RL Watrous, DM Grove, DL Bowen

SA1 Heart Rate Variability II

Table of Contents

Thrombolysis in the Eyes of the Continuous Wavelet Transform 657
E Toledo, O Gurevitz, H Hod, M Eldar, S Akselrod
Beat-to-Beat Heart Rate and QT Interval Variability in Patients Undergoing Coronary Artery Bypass Graft Surgery 661
S Frljak, V Avbelj, R Trobec, B Gersak
A New Method to Detect Erratic Sinus Rhythm in RR-Interval Files Generated from Holter Recordings 665
PP Domitrovich, PK Stein
Heart Rate Variability is Confounded by the Presence of Erratic Sinus Rhythm 669
PK Stein, D Yanez, PP Domitrovich, J Gottdiener, P Chaves, R Kronmal, P Rautaharju
Non-Linear Analysis of Heart Rate Variability in Patients with Coronary Heart Disease 673
G Krstacic, A Krstacic, M Martinis, E Vargovic, A Knezevic, A Smalcelj, M Jembrek-Gostovic, D Gamberger, T Smuc

SA2 Repolarisation

Table of Contents

A Robust T Wave Alternans Detector Based on the GLRT for Laplacian Noise Distribution 677
JP Martínez, S Olmos
Presence of T Wave Alternans in the Statistical Context - A New Approach to Low Amplitude Alternans Measurement 681
T Srikanth, D Lin, N Kanaan, H Gu
Longitudinal Modifications of T-Loop Morphology 685
G Bortolan, M Bressan, I Christov
Spatio-Temporal Linear Expansions for Repolarization Analysis 689
S Olmos, JP Martínez, L Sörnmo
Organophosphate-Modulated Cardiac Membrane Currents: Computer Study of the Genesis of LQT 693
CK Zoltani, SI Baskin
Automatic Adjustment of Manually Measured QT Intervals in Digital Electrocardiograms Improves Precision of Electrocardiographic Drug Studies 697
K Hnatkova, M Malik

SA3 Cardiac Mechanics

Table of Contents

Mechanical Response of the Left Ventricle During AC Induced Hemodynamic Collapse 701
BK Hoffmeister, JA Sexton, BS Sheals, AL de Jongh, RA Malkin
Modeling of Electro-Mechanics in Left Ventricle 705
FB Sachse, G Seemann, CD Werner
Quantification of 3D Left Ventricular Deformation using Hyperelastic Warping: Comparisons between MRI, and PET Imaging 709
AI Veress, JA Weiss, GJ Klein, GT Gullberg
Different Estimates of Cardiac Power: Relationship to Altered Loading Conditions 713
MS Firstenberg, G Armstrong, NL Greenberg, MJ Garcia, JD Thomas
Wave Intensity Analysis: a Novel Non-Invasive Method for Determining Arterial Wave Transmission 717
A Zambanini, AW Khir, SM Byrd, KH Parker, SAMcG Thom, AD Hughes

SA4 Other Topics

Table of Contents

Variability of Body Surface Impedance Measurements in Cardiac Transplant Patients and Normal Subjects 721
P Langley, JH Dark, A Murray
Simulation Study of the Potential Hazards of Cardiac Stimulation by Induced Eddy-Currents in Modern MRI 725
L Xia, F Liu, H Zhao
The Response of Intact Guinea Pigs to AC Leakage Currents 729
S Patel, RA Malkin
Effect of 2, 3 Butanedione Monoxime (BDM) on Ventricular Fibrillation 733
M Malik, M Gopalakrishnan, RA Malkin
Pinacidil Modifies the Vulnerability to Reentry during Regional Myocardial Ischemia in a Dose Dependent Manner: a Simulation Study 735
B Trenor, JM Ferrero, F Montilla