Course Contents
Chapter 13: Sound and Ultrasound 343
Covered Feb. 19, 2008
The Wave Equation 343
Covered Feb. 19, 2008
Plane Waves in an Elastic Rod 343
Covered Feb. 19, 2008
Plane Waves in a Fluid 344
Covered Feb. 19, 2008
Properties of the Wave Equation 345
Covered Feb. 19, 2008
Acoustic Impedance 346
Covered Feb. 19, 2008
Relationships Between Pressure, Displacement and Velocity in a Plane
Wave 346
Covered Feb. 19, 2008
Reflection and Transmission of Sound at a Boundary 346
Covered Feb. 19, 2008
Comparing Intensities: Decibels 347
Covered Feb. 26, 2008
The Decibel 347
Covered Feb. 26, 2008
Hearing Response 347
Covered Feb. 26, 2008
The Ear and Hearing 348
Attenuation 349
Covered Feb. 26, 2008
Medical Uses of Ultrasound 350
Covered Feb. 26, 2008
Ultrasound Transducers 350
Covered Feb. 26, 2008
Pulse Echo Techniques 352
Covered Feb. 26, 2008
The Doppler Effect 353
Covered Feb. 26, 2008
Symbols Used 354
Problems 354
References 357
Chapter 14: Atoms and Light 359
The Nature of Light: Waves versus Photons 359
Covered March 4, 2008
Atomic Energy Levels and Atomic Spectra 361
Covered March 4, 2008
Molecular Energy Levels 362
Covered March 4, 2008
Scattering and Absorption of Radiation; Cross Section 364
Covered March 4, 2008
The Diffusion Approximation to Photon Transport 367
General Theory 367
Continuous Measurements 368
Pulsed Measurements 368
Refinements to the Model 369
Biological Applications of Infrared Scattering 369
Covered March 11, 2008
Near Infrared (NIR) 369
Covered March 11, 2008
Optical Coherence Tomography (OCT) 370
Covered March 11, 2008
Raman Spectroscopy 371
Covered March 18, 2008
Far Infrared or Terahertz Radiation 372
Covered March 18, 2008
Thermal Radiation 372
Covered March 18, 2008
Infrared Radiation from the Body 375
Covered March 18, 2008
Atherosclerotic Coronary Heart Disease 376
Covered March 25, 2008
Blue and Ultraviolet Radiation 377
Covered March 25, 2008
Treatment of Neonatal Jaundice 377
Covered March 25, 2008
The Ultraviolet Spectrum 377
Covered March 25, 2008
Response of the Skin to Ultraviolet Light 378
Covered March 25, 2008
Ultraviolet Light Causes Skin Cancer 380
Covered March 25, 2008
Protection from Ultraviolet Light 380
Covered March 25, 2008
Ultraviolet Light Damages the Eye 381
Covered March 25, 2008
Ultraviolet Light Synthesizes Vitamin D 381
Covered March 25, 2008
Ultraviolet Light Therapy 381
Covered March 25, 2008
Heating Tissue with Light 381
Covered March 25, 2008
Radiometry and Photometry 383
Covered March 25, 2008
Radiometric Definitions 383
Covered March 25, 2008
Photometric Definitions 387
Covered April 1, 2008
Actinometric Definitions 388
The Eye 388
Covered April 1, 2008
Quantum Effects in Dark-Adapted Vision 390
Covered April 1, 2008
Symbols Used 392
Problems 393
References 397
Chapter 15: Interaction of Photons and Charged Particles with Matter 401
Atomic Energy Levels and X-ray Absorption 401
Photon Interactions 403
Covered April 1, 2008
Photoelectric Effect 403
Covered April 1, 2008
Compton and Incoherent Scattering 403
Covered April 1, 2008
Coherent Scattering 403
Covered April 1, 2008
Inelastic Scattering 403
Covered April 1, 2008
Pair Production 403
Covered April 1, 2008
Energy Dependence 404
Covered April 1, 2008
The Photoelectric Effect 404
Covered April 8, 2008
Compton Scattering 405
Covered April 8, 2008
Kinematics 405
Cross Section: Klein-Nishina Formula 406
Covered April 8, 2008
Incoherent Scattering 406
Covered April 8, 2008
Energy Transferred to the Electron 407
Covered April 8, 2008
Coherent Scattering 407
Covered April 8, 2008
Pair Production 407
The Photon Attenuation Coefficient 408
Covered April 8, 2008
Compounds and Mixtures 410
Deexcitation of Atoms 410
Covered April 22, 2008
Energy Transfer from Photons to Electrons 412
Covered April 22, 2008
Charged-Particle Stopping Power 414
Interaction with Target Electrons 418
Scattering from the Nucleus 421
Stopping of Electrons 422
Compounds 422
Linear Energy Transfer and Restricted Collision Stopping Power 422
Range, Straggling, and Radiation Yield 423
Track Structure 424
Energy Transferred and Energy Imparted; Kerma and Absorbed Dose 425
An Example 425
Energy Transferred and Kerma 427
Energy Imparted and Absorbed Dose 427
Net Energy Transferred, Collision Kerma, and Radiative Kerma 428
Charged-Particle Equilibrium 428
Radiation Equilibrium 428
Charged-particle Equilibrium 428
Buildup 429
Symbols Used 430
Problems 431
References 434
Chapter 16: Medical Use of X Rays 437
Production of X Rays 437
Characteristic X Rays 437
Bremsstrahlung 438
Covered April 22, 2008
Quantities to Describe Radiation Interactions 439
Radiation Chemical Yield 439
Mean Energy per Ion Pair 439
Exposure 440
Detectors 440
Film and Screens 440
Scintillation Detectors 442
Gas Detectors 444
Semiconductor Detectors 445
Thermoluminescent Dosimeters 445
Chemical Dosimetry 445
Digital Detectors 446
The Diagnostic Radiograph 446
X-ray Tube and Filter 446
Collimation 447
Attenuation in the Patient: Contrast Material 447
Antiscatter Grid 450
Film-Screen Combination 450
Computed and Direct Radiography 450
Image Quality 450
Angiography and Digital Subtraction Angiography 453
Mammography 453
Fluoroscopy 454
Computed Tomography 454
Biological Effects of Radiation 457
Cell-Culture Experiments 458
Chromosome Damage 458
The Linear-quadratic Model 460
The Bystander Effect 460
Tissue Irradiation 461
A Model for Tumor Eradication 463
Radiation Therapy 463
Classical Radiation Therapy 464
Modern X-ray Therapy 465
Charged Particles and Neutrons 465
Dose Measurement 467
The Risk of Radiation 468
Equivalent and Effective Dose 468
Comparison with Natural Background 469
Calculating Risk 470
Radon 472
Symbols Used 473
Problems 474
References 477
Computed Tomography Image Reconstruction
- Reconstruction problem description
Covered April 29, 2008
- Backprojection
Covered April 29, 2008
- Algebraic reconstruction technique (ART)
Covered April 29, 2008
Magnetic Resonance Imaging (Use
lecture notes or hardcopy handouts from eng. Marwa to study this part)
- Conditions for nuclei exhibiting magnetic resonance phenomenon
Covered May 6, 2008
- Net magnetization computation using Boltzmann ratio
Covered May 6, 2008
- Resonance condition and Larmor equation
Covered May 6, 2008
- Excitation of spin systems
Covered May 6, 2008
- Dynamics of excitation: rotation and precession
Covered May 6, 2008
- Laboratory and rotating frames of reference
Covered May 6, 2008
- Spatial encoding: RF pulse with magnetic field gradients for slice
selection
Covered May 6, 2008
- Spatial encoding: magnetic field gradients applied during reception for
frequency encoding
- Relaxation: T1 and T2 relaxation times.
- Practical MRI system components and specifications
- Safety of MRI systems