MRI

MRI is an expensive but impressive imaging technique which has become widely used. Its ability to resolve soft tissue supersedes other imaging techniques. These slides outline the physical basis of MRI, including the concepts of spin, precession, the Larmor frequency, resonance and relaxation time.

Keynote slides

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Radioisotope and PET imaging

The rapidly expanding field of nuclear medicine involves the insertion of radioactive substances into the patient. These may be attached to various pharmaceuticals, and the location of the isotope is recorded using gamma detectors. PET scans utilise isotopes which undergo beta + decay. The antiparallel gamma photons resulting from the electron-positron annihilation is recorded by the detector.

Theses slides outline the use of radioisotopes in both conventional and PET nuclear imaging.

Keynote slides

X-ray and Endoscopy

The electromagnetic spectrum is very useful for diagnostic imaging of the human body. These slides outline the production and implementation of X-rays in imaging, including soft and hard X-rays as well as CAT scans. The practise of using visible light to image the body through the process of endoscopy is also introduced (including total internal reflection, coherent and incoherent fibre optic bundles).

Keynote slides