20. Bioimaging

Frontiers of Biomedical Engineering (BENG 100)

Professor Saltzman first reviews the electromagnetic spectrum, the different regimes of the spectrum, their respective wavelengths, energies, and ways of detecting them. He then talks about the use of high energy radio waves for imaging of the body. The history, components, advantages and limitations of X-ray imaging are presented in detail. Next, he introduces Computed Tomography, a related imaging technique which uses mathematical computation to compile line-scanned X-rays into a three dimensional image. Finally, Professor Saltzman touches on harmful effects of X-ray radiation, and ways to limit or avoid overexposure in these imaging techniques.

00:00 - Chapter 1. Introduction to Biomedical Imaging
05:26 - Chapter 2. The Electromagnetic Spectrum
13:29 - Chapter 3. X-Rays
24:39 - Chapter 4. Challenges of X-Ray Imaging
30:41 - Chapter 5. CT Imagery
37:02 - Chapter 6. Conclusion

Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses

This course was recorded in Spring 2008.