RAD3011

Medical imaging and methods 1 (CT)

Objectives This subject aims to provide students with an understanding of the scientific principles underpinning computed tomography (CT), its associated instrumentation and protocols, positioning methods and radiation protection principles. Students will extend their knowledge base developed in the information technology component of RAD2011. On completion of the subject, students will be able to conduct and evaluate radiographic examinations of the skull, facial bones and lacrimal system; will know how to conduct CT examinations of the body; will be able to recognise and describe the relevant anatomical structures and their relationships on axial images and be able to recognise common pathological processes.

Synopsis Radiography (plain film imaging) of the cranium, facial bones and petrous temporal bone. Dacrocystography. Computed Tomography: scientific principles and operational modes. System components and image characteristics. The Radon transform and sinogram. Image reconstruction techniques, summation convolution back-projection. Introduction to the Fourier transform and other algebraic and iterative reconstruction methods. Helical/spiral CT systems. Artefacts and image quality measures in tomography, dosimetry. Area of interest statistics. CT positioning and examination protocols for the head, chest, abdomen and spine; CT pelvimetry and CT arthrography. Myelography (fluoroscopic and CT). Cross sectional anatomy will be reinforced. Information technology: implementation of tomographic reconstruction algorithms in software. 3D image representation of helical CT images, image co-registration in 3D, image segmentation in 3D.

Assessment To be advised

Texts

Chapman S and Nakieny R A guide to radiological procedures Balliere Tindall, 1993
Gedroyc W and Rankin S Practical CT techniques Springer Verlag, 1992
Kelley L L and Petersen C Sectional anatomy 1996
Lau L (ed.) Imaging guidelines VMPF, 1997
Romans L Introduction to computed tomography Williams and Wilkins, 1995