Overview

While audiologists typically are not involved in the decision to order a CT or MRI, the past decade has seen an increase in the exposure of audiologists to these procedures, particularly as related to images that appear within the audiologic literature. The results of imaging studies are often considered in combination with audiologic test results to arrive at the correct diagnosis and treatment options.

This superb new text/reference provides a detailed understanding of the combined functional and structural assessment results to enable a complete picture of both the normal and pathologic auditory system. The author recognizes that while audiologists, otologists and other health care professionals primarily work in the domain of functional assessment of the auditory system, there is often a general lack of basic instruction in understanding radiologic images, primarily CT scans and MRI scans, as related to auditory system pathology.

The book briefly reviews the evolution of radiologic imaging, and the different types of imaging, and the methods by which they are obtained, before providing the reader with orientation and instruction in reading those images. Included are a series of clearly labeled normal images used to identify the major structures of the ear and temporal bone, as well as the central auditory system. On each page, a 3-dimensional mannequin head is used to orient the reader as to the plane of the image and the direction of view. In addition, key radiologic signs, correlative audiograms and history and audiologic signs are provided in order to link functional and structural assessment results.

The major part of the book is dedicated to pathologies arranged in an ascending order through the auditory system, beginning with pathologies of the external ear canal, progressing through pathologies of the middle ear and then the cochlea. Images of vestibular system pathologies, such as enlarged vestibular aqueduct or superior canal dehiscence, and pathologies of the central auditory nervous system, are also be presented. Each pathology presented features several sections including a radiologic image with relevant structures labeled; a key for the labels in the image; 3D mannequin head showing the orientation and view of the image; a summary of key radiologic signs necessary for differentiation of structural abnormalities; typical or common audiologic results for various pathologies; and key facts regarding history and audiologic correlates for the pathology.

The book concludes with case examples that allow the reader to correlate structural and functional test results and attempt to differentiate the pathology.

Audience

Primary Subject: Audiology / General
Secondary Subject: Otolaryngology-Head & Neck Surgery / Otology
Secondary Subject: Imaging
Audience Level: Professional/Textbook - 90 Days

• Introduction to imaging
  • The importance of understanding structural integrity of the auditory system
  • The relationship of functional and structural assessment of the auditory system.
  • History and evolution of imaging
  • Computed Tomography
  • Magnetic resonance imaging
• Orientation to images of the auditory system
  • Planes of imaging
  • Patient and technical information present on the image
  • Scaling
• Normal images of the peripheral auditory system
  • Presentation of axial and coronal images
  • Structures of the external ear, middle ear, cochlea and vestibular system
  • Associated structure of the temporal bone
• Normal images of the central nervous system
• Pathologies of the auditory system to include
  • Osteoma
  • Exotosis
  • Artresia
  • Otitis Media
  • Cholesteatoma
  • Glomus Tympanicum
  • Acute Otomastoiditis
  • Glomus Jugulare
  • Temporal Bone Trauma
  • Labyrinthitis Ossificans
  • Cochlear Cleft
  • Cochlear Malformation (Mondini)
  • Enlarged Endolymphatic Sac Anomaly
  • Otosclerosis/Ossicular Fixation
  • Meniere’s
  • Discontinuity of the Ossicular Chain
  • Enlarged Vestibular Aqueduct
  • Superior Canal Dehiscence
  • Acoustic Neuroma
  • Meningioma
  • Cholesteatoma
  • Intracranial bleeding
  • Intra-axial tumors
  • Temporal lobe tumors
  • Temporal lobe injury
• Case Studies and Quizzes

About The Author

Ian Windmill, PhD

Dr. Ian Windmill is Professor and Director of the Division of Communication Science at the University of Mississippi Medical Center.