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Chapter-051 Imaging for Diagnosis and Evaluation

BOOK TITLE: Head & Neck Surgery (2 Volumes)

Author
1. Wong KT
2. Lee Yolanda YP
3. King Ann D
4. Yuen Edmund HY
5. Ahuja Anil T
ISBN
9788184486797
DOI
10.5005/jp/books/10351_51
Edition
1/e
Publishing Year
2009
Pages
24
Author Affiliations
1. Prince of Wales Hospital Hong Kong
2. Prince of Wales Hospital, Hong Kong
3. The Chinese University of Hong Kong
4. Apex MRI Center Limited, Hong Kong
5. Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, The Chinese University of Hong Kong
Chapter keywords
imaging modalities, neck cancers, ultrasound, magnetic resonance imaging, MRI, computed tomography, positron emission tomography, neck lump, ultrasound beam, neoplastic, neck coil

Abstract

This chapter discusses imaging for diagnosis and evaluation, where the common imaging modalities used for evaluation of head and neck cancers include ultrasound (USG), magnetic resonance imaging (MRI), computed tomography (CT) and positron emission tomography (PET) combined with CT. Patients with head and neck cancer often show a palpable neck lump as the first presentation and ultrasound is the most common initial modality of choice in these patients. The major role of ultrasound in head and neck imaging is assessment of a neck mass and cervical lymph nodes for evidence of neoplastic involvement. High frequency transducers allow superior near-field resolution, though there is a trade off in the lack of depth penetration by the ultrasound beam. MRI of common head and neck cancers is usually performed using a head coil, a neck coil, or a dedicated combined head and neck coil.

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