This book is based upon a previous work published in 1983 (Radiology of the Ear). Since that date. the most important advance in the imaging of the petromastoid has been the application of magnetic resonance scanning. especially when combined with the use of the recently introduced paramagnetic contrast agent. Gadolinium DTP A. Although computerised tom ography remains the dominant investigation in this field. magnetic resonance is becoming increasingly important. The account which follows is an attempt to summarise present knowledge in this division of otorhinolaryngology imaging. The format...