Diagnostic Imaging of the Ear

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 of the chapters has been retained from the original work. with an initial account of imaging techniques and normal anatomy followed by chapters on congenital ear disease. trauma. inflammatory disease and neoplasia. Acoustic neuroma is given a separate section and there are two final chapters on vertigo and otosclerosis. The authors are deeply indebted to their surgical colleagues for cooperation and help in the preparation of the text and their readiness to allow access to clinical material. In this respect. we are particularly indebted to Professor Ronald Hinchcliffe. who has written the Foreword. We are greatly indebted to Dr. Hermann Wilbrand ofUppsala. Sweden. for some line drawings and to Drs. Anthony Lloyd and David Beale. Consultant Neuroradiologists at the Walsgrave Hospital. Coventry. for several radiographs. including many of the angiograms and MR scans.

A completely updated edition of "Radiology of the Ear", 1983, with coverage of new MRI techniques.

1 Radiological Methods of Investigation of the Petrous Bone and Mastoid Processes.- Plain X-ray Examination.- Pluridirectional Tomography.- Computerised Tomography.- Magnetic Resonance.- Angiography.- Embolisation Techniques.- References.- 2 Anatomy and Development of the Ear.- Development in the Embryo.- The Temporal Bone.- Pneumatisation of the Mastoid.- The Inner Ear.- The Middle Ear Cavity.- The Carotid Canal.- Jugular Fossa.- Facial Nerve.- Labyrinthine Part.- The Auditory Ossicles.- References.- 3 Imaging Investigation of Congenital Deafness.- Historical Review of Congenital Deafness due to Malformations of the Temporal Bone and their Investigations.- Inner Ear.- Internal Auditory Meatus (IAM).- Major Deformities of the Labyrinth.- Lesions of the Cochlea.- Lesions of the Vestibule and Semicircular Canals.- Middle Ear.- External Auditory Meatus (EAM).- Facial Nerve.- Regime for Investigation.- References.- 4 Syndromes with Congenital Hearing Loss.- Otocranio-facial Syndromes.- Familial Mixed Deafness with Branchial Arch Defects (Earpits Deafness Syndrome).- Otocervical Syndromes.- Otofacial-cervical Syndrome.- Otoskeletal Syndromes (Bone Dysplasias).- Chromosome Abnormalities with Ear Malformations.- Ear Abnormalities with Endocrine Disorders.- Drug-induced Ear Malformations.- Neurofibromatosis (von Recklinghausen's Disease).- The CHARGE Association.- Conclusion.- References.- 5 Traumatic Lesions of the Temporal Bone.- Technique.- Classification of Fractures.- Complications of Petromastoid Fractures.- Foreign Bodies in the Ear.- References.- 6 Inflammatory Diseases of the Temporal Bone.- Acute Otitis Media.- Chronic Otitis Media.- Complications of Middle-ear Infection.- Malignant Otitis Externa.- References.- 7 Cholesteatoma.- Congenital Cholesteatoma.- AcquiredCholesteatoma.- Cholesteatoma in Children.- Invasion of the Labyrinth by Cholesteatoma.- Investigation.- Imaging the Post-operative Ear.- References.- 8 Tumours of the Middle Ear and Petrous Temporal Bone.- Benign Neoplasms.- Malignant Neoplasms.- References.- 9 Lesions of the Internal Auditory Meatus and Posterior Cranial Fossa: the Investigation and Differential Diagnosis of Acoustic Neuroma.- Internal Auditory Meatus (IAM).- Cerebellopontine Angle.- Neurovascular Anatomy of the I AM and Cerebello-pontine Angle.- Acoustic Neuroma.- Differential Diagnosis of Acoustic Neuroma.- Conclusion.- References.- 10 Radiology of Vertigo.- Peripheral Vertigo.- Central Vertigo.- Cervical Vertigo.- References.- 11 Otosclerosis and Bone Dysplasias. Cochlear Implants.- Otosclerosis.- Paget's Disease (Osteitis Deformans).- Fibrous Dysplasia.- Cochlear Implants.- References.