BM 2201 MEDICAL PHYSICS Lecture Notes for BME - Third (3rd) semester
BM2201 Lecture Notes
Electromagnetic spectrum and its medical application
Light - Physics of light, Intensity of light, limits of Vision and color vision Sound - Physics
of sound , Normal sound levels – Ultrasound fundamentals- Generation of ultrasound (
Ultrasound Transducer) – Interaction of Ultrasound with Materials-Reflection and
Refraction – Absorption and Scattering Non- ionizing Electromagnetic Radiation
Tissue as a leaky dielectric – Relaxation Processes – Overview of non – ionizing
radiation effects -Low Frequency Effect – Higher frequency effect.
Radioactive Decay – Spontaneous Emission – Isometric Transition - Gamma ray
emission, alpha, beta, positron decay, electron capture Principles of Nuclear Physics –
Natural radioactivity, Decay series, Half life period, type of radiation and their applications.
Production of radionuclides – Cyclotron produced Radionuclide - Reactor produced
Radionuclide – fission and electron Capture reaction, Radionuclide Generator – Milking
Process - Linear accelerator , Radionuclide used in Medicine and technology.
UNIT III INTERACTION OF RADIATION WITH MATTER
Interaction of charged particles with matter – Specific ionization , linear energy Transfer
Range, Bremsstrahlung , Annihilation Interaction of Gamma radiations with matter –
Photoelectric effect, Compton Scattering , pair Production, Attenuation of Gamma
Radiation, Interaction of neuron with matter
UNIT IV PHYSICS OF CARDIOPULMONARY SYSTEM
The Airways, - blood and lung interaction – measurement of lung volume – pressure air
flow volume relation ships of lungs – physics of alveoli – the breathing mechanism – Major
components of cardiovascular system – O2 and CO2 exchange in the capillary system –
Physical activity of heart – transmural pressure – Bernolli’s principles applied to
cardiovascular system - Blood flow – laminar and turbulent
UNIT V RADIATION EFFECTS
Acute Radiation Effects - The concept of LD 50 – Radiation syndromes- Central
nervous system syndrome - Gastro-intestinal syndrome –Bone Marrow syndrome
Delayed Effects of Radiation - Stochastic and Deterministic effects – Late Deterministic
effect in different organs and tissues.