PH25C07 Medical Physics – Semester II – BME / MedElec – R-2025

Subject Code & Name: PH25C07 Medical Physics

Regulation: R-2025

Semester: II (Second Semester)

Branch: BME / MedElec

Credits / L-T-P: 3 Credits | L-T-P: 2-1-0

Course Objectives

• To impart knowledge about the use of physics radiation principles and techniques in medical science.to highlight the fundamentals, consequences, and medical uses of electromagnetic, ionizing, and non-ionizing radiation.

Full Unit-wise Syllabus

Unit I – Low Energy Electromagnetic Spectrum and its Medical Application

Physics of light, Intensity of light, limits of vision and color vision an overview, Non-ionizing Electromagnetic Radiation: Overview of non-ionizing radiation effects-Tissue as a leaky dielectric-Low Frequency Effects- Higher frequency effects., Thermography– Application.

Activities: Virtual demonstration of Thermography.

Unit II – Principles of Radioactive Nuclides

Radioactive Decay – Spontaneous Emission – Isometric Transition Gamma ray emission, alpha, beta, Positron decay, electron capture, Sources of Radioisotopes Natural and Artificial radioactivity, Radionuclide used in Medicine and Technology, Decay series, Production of radionuclides – Cyclotron produced Radionuclide- Reactor produced Radio- nuclide-fission and electron Capture reaction, radionuclide Generator-Milking process (Technetium generator).

Activities: Radiology lab visit.

Unit III Interaction of Radiation with Matter

Interaction of charged particles with matter –Specific ionization, Linear energy transfer range, Bremsstrahlung, Annihilation, Interaction of X and Gamma radiation with matter- Photoelectric effect, Compton Scattering, Pair production, Attenuation of Gamma Radiation, Interaction of neutron with matter and their clinical significance.

Activities: Case study in applications of radiation.

Unit IV – Radiation Dose and its Effects

Dose and Exposure measurements – Units (SI), Inverse square law, Maximum permissible exposure, relationship between the dosimetric quantities, Radiation biology – effects of radiation, concept of LD 50, Stochastic and Non-stochastic effects, Radiation Syndrome.

Activities: Case study in radiation effects.

Unit V – Principles and Applications of Sound in Medicine

Physics of sound, Normal sound levels, ultrasound fundamentals, Generation of ultrasound (Ultrasound Transducer), Interaction of Ultrasound with matter- Cavitations, Reflection, Transmission, Scanning methods, Artifacts, Ultrasound- Doppler effect, Clinical Applications.

Activities: Seminar on Clinical Applications of Ultrasound.

Course Outcomes (COs)

• CO1: Explain the properties of electromagnetic radiations and its effect on human.
• CO2: Apply the of radioactive nuclides and properties of sound and its application in medicine.
• CO3: Analyse the radiation dose and its effects.

Assessment Pattern (Quick Note)

• Weightage: Continuous Assessment 40% | End Semester Examinations 60%
• Internal methodology: Quiz (10%), Assignments (30%), Flipped Class (10%), Internal Examinations (50%)

Source: Official Anna University – B.E. Biomedical Engineering R-2025 Syllabus
Last Updated: September 2026