This course introduces and discusses medical imaging and treatment techniques which make use of sound and light waves including ultrasound, terahertz and laser techniques. Ultrasound imaging techniques and applications: wave propagation theory (wave equation, transmission and reflection coefficients, attenuation), medically relevant examples. Terahertz imaging techniques and applications: generation and detection methods, principles of data analysis, molecular spectroscopy and potential medical applications. Laser techniques for medical treatments: photodynamic therapy, laser surgery. (Prerequisite: BMEG3320. Not for students who have taken ESTR4201.)