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Case Studies in Mathematical Modeling for Medical Devices

How Pulse Oximeters and Doppler Ultrasound Fetal Heart Rate Monitors Work

  • 1st Edition - November 12, 2024
  • Latest edition
  • Author: John Crowe
  • Language: English

Case Studies in Mathematical Modelling for Medical Devices: How Pulse Oximeters and Doppler Ultrasound Fetal Heart Rate Monitors Work focuses on two medical devices: pulse oximet… Read more

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Description

Case Studies in Mathematical Modelling for Medical Devices: How Pulse Oximeters and Doppler Ultrasound Fetal Heart Rate Monitors Work focuses on two medical devices: pulse oximeters and Doppler ultrasound fetal heart rate monitors. The mathematical topics needed to explain their operation from first principles are introduced. These broadly cover the statistics of random processes and Fourier based signal processing. They are used to explain the devices’ operation from first principles to how clinically relevant information is extracted from the devices’ raw outputs. .

The book is for MSc and PhD students working in the area who want a quick, clear introduction to the topics, upper-division undergrads as part of biomedical engineering or applied math degree courses, biomedical engineers looking for a quick "refresher course" and clinicians interested in the operation of the instruments they use.

Key features

  • Describes, from first principles, the operation of two medical diagnostic devices

  • Introduces diverse and widely used mathematical topics

  • Uses this knowledge to model the physical processes that underpin the devices’ operation

  • Explains how clinically relevant information is obtained from the monitors’ raw outputs.

Readership

MSc and PhD students working in the area who want a quick, clear introduction to the topics, upper-division undergrads as part of biomedical engineering or applied math degree courses, biomedical engineers looking for a quick "refresher course" and clinicians interested in the operation of the instruments they use.

Table of contents

Preface ix
Acknowledgments xi
Introduction to the book xiii
PART 1 Maths for oximetry
List of symbols and abbreviations 3

1. Introduction 7

2. Discrete probability distributions 9

3. Continuous probability distributions 17

4. Summary statistics, moments, and cumulants 29

5. Commonly encountered distributions 43

6. Shifting and scaling distributions 61

7. Random samples fromdistributions 67
PART 2 Oximeters

8. Introduction: oximetry 79

9. Absorption coefficients 89

10. Lambert–Beer law 97

11. Oximetry on non-scattering samples 105

12. Scattering and the Lambert–Beer law 113

13. Attenuation versus absorption—a theoretical derivation 123

14. Pulse oximetry 135

15. Pulse oximetry on a population 147

16. TheMasimo Corporation’s oximeters 153

17. Modeling light propagation 163

18. The oximeter zoo 177
PART 3 Appendices for oximeters

19. Variance via raw moments 197

20. Taylor series 199

21. Binomial coefficients and series 201

22. Calculus 205

23. Derivatives of attenuation versus absorbance 215

24. Modeling the PPG 217

25. Fluorescence lifetimemeasurements 219

26. Logarithms 223
PART 4 Maths for DUS-FHR
List of symbols and abbreviations 229

27. Introduction 231

28. Waves 237

29. Sinusoids 241

30. Beats 249

31. Fourier analysis 253

32. Frequency domain filtering 263

33. Hilbert transform and the analytic signal 269

34. Convolution 279

35. Modulation 285

36. Sampling 293

37. Autocorrelation 299
PART 5 DUS-FHR

38. Fetal heart rate monitoring 307

39. Ultrasound 313

40. Doppler ultrasound 317

41. Doppler shift extraction 329

42. DUS-FHRmonitoring 355

43. Bandpass sampling 371

44. Pulsed operation 387
PART 6 Appendices for DUS-FHR

45. Compound angle identities 395

46. Complex numbers 397

47. Modeling with Matlab® 399
Bibliography 409
Index 413

Product details

  • Edition: 1
  • Latest edition
  • Published: November 14, 2024
  • Language: English

About the author

JC

John Crowe

John Crowe retired in 2020 after working as a biomedical engineer in academia for 40 years. During this time, he worked on the development of numerous medical devices with a couple leading to the formation of spin out companies. He previously co-authored the undergraduate textbook Introduction to Digital Electronics (1998).

Affiliations and expertise
Professor Emeritus of Biomedical Engineering, Faculty of Engineering, University of Nottingham, UK

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