Medical Device Data and Modeling for Clinical Decision Making Artech House Series Bioinformatics & Biomedical Imaging Series Editors Stephen T. C. Wong, The Methodist Hospital and Weill Cornell Medical College Guang-Zhong Yang, Imperial College Advances in Diagnostic and Therapeutic Ultrasound Imaging, Jasjit S. Suri, Chirinjeev Kathuria, Ruey-Feng Chang, Filippo Molinari, and Aaron Fenster, editors Biological Database Modeling, Jake Chen and Amandeep S. Sidhu, editors Biomedical Informatics in Translational Research, Hai Hu, Michael Liebman, and Richard Mural Genome Sequencing Technology and Algorithms, Sun Kim, Haixu Tang, and Elaine R. Mardis, editors High-Throughput Image Reconstruction and Analysis, A. Ravishankar Rao and Guillermo A. Cecchi, editors Life Science Automation Fundamentals and Applications, Mingjun Zhang, Bradley Nelson, and Robin Felder, editors Medical Device Data and Modeling for Clinical Decision Making, John R. Zaleski Microscopic Image Analysis for Life Science Applications, Jens Rittscher, Stephen T. C. Wong, and Raghu Machiraju, editors Next Generation Artificial Vision Systems: Reverse Engineering the Human Visual System, Maria Petrou and Anil Bharath, editors Systems Bioinformatics: An Engineering Case-Based Approach, Gil Alterovitz and Marco F. Ramoni, editors Text Mining for Biology and Biomedicine, Sophia Ananiadou and John McNaught, editors Translational Multimodality Optical Imaging, Fred S. Azar and Xavier Intes, editors Medical Device Data and Modeling for Clinical Decision Making John R. Zaleski artechhouse.com Library of Congress Cataloging-in-Publication Data A catalog record for this book is available from the U.S. Library of Congress. British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library. ISBN 13: 978-1-60807-094-7 Cover design by Karl Fabry © 2011 ARTECH HOUSE 685 Canton Street Norwood, MA 02062 All rights reserved. Printed and bound in the United States of America. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, includ- ing photocopying, recording, or by any information storage and retrieval system, without permission in writing from the publisher. All terms mentioned in this book that are known to be trademarks or service marks have been appropriately capitalized. Artech House cannot attest to the accuracy of this information. Use of a term in this book should not be regarded as affecting the validity of any trademark or service mark. 10 9 8 7 6 5 4 3 2 1 For Cheryl, Matthew, and Andrew Contents Preface xi CHAPTER 1 Introduction to Physiological Modeling in Medicine: A Survey of Existing Methods, Approaches, and Trends 1 1.1 Overview 1 1.2 The Art of Modeling and Prediction 2 1.3 Why Model? 3 1.4 Multivariate Models and Model Complexity 6 1.5 Clinical Informatics and Meaningful Use 8 1.6 Types of Models 9 1.7 Stochastic Modeling and Monte Carlo Simulation 12 1.8 Guidelines and Protocols 14 1.9 Summary 16 References 17 CHAPTER 2 Simulation and Modeling Techniques 19 2.1 Simulating Physical Systems 19 2.2 Introduction to Monte Carlo Simulation 20 2.3 Introduction to Discrete Event Simulation 30 2.4 Queuing and Discrete Event Simulation Models 32 2.5 Deterministic Mathematical Models 39 2.6 Probability and Statistics 39 2.6.1 Binomial Probability Distribution 40 2.6.2 Gaussian Probability Distribution 42 2.6.3 Exponential Distribution 48 2.6.4 Poisson Distribution 49 2.6.5 Confidence Intervals 51 2.7 Sensitivity, Specificity and Confidence Intervals 55 2.8 Chi-Square Tests 58 2.9 The Concept of c 2 and the Assignment Problem 62 2.10 Other Applications of Optimal Assignment Methodologies 65 2.11 Noise and Error Representation 68 2.11.1 Special Case: Gauss-Markov Random Processes 75 2.12 Queuing Theory Deep Dive and Examples 77 2.13 Summary 81 References 83 vii viii Contents CHAPTER 3 Introduction to Automatic Control Systems Theory and Applications 85 3.1 State Space Modeling 85 3.2 Controllability and Observability 99 3.3 The Feedback Control Loop 105 3.4 System Stability 109 3.5 Techniques for Representing Physical Phenomena 113 References 117 CHAPTER 4 Physical System Modeling and State Representation 119 4.1 Fluid Mechanics Applications 119 4.2 Electrical Signal and Circuit Analogs to Physical Systems 132 4.3 Simplified Physiological Systems Modeling 136 References 139 CHAPTER 5 Medical Device Data Measurement, Interoperability, Interfacing, and Analysis 141 5.1 Types of Medical Devices Used for Physiological Measurement 141 5.2 Medical Device Interfaces, Standards, and Interoperability Initiatives 144 5.3 Medical Device Data Collection, Validation, and Clinical Use 145 5.4 Biomedical Device Interoperability and the Electronic Medical Record 147 5.5 Associating Biomedical Device Data with Patients 149 5.6 Spatial-Temporal Modeling of Medical Device Data 149 5.7 Biomedical Data Storage and Retrieval 155 5.8 Applying Wavelet Transforms to Biomedical Device Data 161 5.9 Summary 163 References 165 CHAPTER 6 Systems Modeling Example Applications 167 6.1 Modeling to Assist Diagnosis and Treatment 167 6.2 Clinical Workflow and Decision Support 168 6.3 Systems Modeling and Integration 173 6.4 Integrating Clinical Decision Support Systems Within Clinical Information Systems 178 6.5 Summary 181 References 182 CHAPTER 7 Modeling Benefits, Cautions, and Future Work 185 References 187 Contents ix Appendix A 189 A.1 Monte Carlo Simulation: Computing p 189 Reference 193 Appendix B 195 B.1 Monte Carlo Simulation: Stereo Viewing Covariance Model 195 Appendix C 211 C.1 Optimal Assignment Algorithm 211 Appendix D 219 D.1 Simple Discrete Event Model 219 Reference 227 Appendix E 229 E.1 Gaussian Random Number Generation 229 Reference 232 Appendix F 233 F.1 Poisson and Exponentially Distributed Random Numbers 233 Appendix G 237 G.1 Java Applet Plotter 237 G.1.1 Method Overview 237 G.1.2 Creating the ActiveX Data Object (ADO) 237 G.1.3 Applet Design 241 G.1.4 Design of the Active Server Page 246 G.1.5 Setting Up a Virtual Directory 253 References 258 Appendix H 259 H.1 Kalman Filter 259 Appendix I 283 I.1 Line Plotter 283 Appendix J 307 J.1 Control Systems Modeling: Spring Mass Response to Step Function 307 List of Acronyms 327 Bibliography 331 About the Author 335 Index 337
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