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MR Imaging of Laryngeal Cancer (Paperback, Softcover reprint of the original 1st ed. 1991)
Loot Price: R2,989
Discovery Miles 29 890
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MR Imaging of Laryngeal Cancer (Paperback, Softcover reprint of the original 1st ed. 1991)
Series: Series in Radiology, 23
Expected to ship within 10 - 15 working days
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MRI is assuming a dominant role in imaging of the larynx. Its
superior soft tissue contrast resolution makes it ideal for
differentiating invasion of tumors of the larynx from normal or
more sharply circumscribed configuration of most of the benign
lesions. Over ten years ago CT made a major impact on laryngeal
examination because it was the first time that Radiologists were
beginning to look at submucosal disease. All of the previous
examinations duplicated the infor mation that was available to the
clinician via direct and in-direct laryngo scopy. With the advent
of rigid and flexible endoscopes, clinical examination became
sufficiently precise that there was little need to perform studies
such as laryngography which merely showed surface anatomy. The
status of deep structures by these techniques was implied based on
function. Fortunately laryngography is now behind us together with
all of the gagging and contrast reactions which we would all like
to forget. CT is still an excellent method of examining the larynx
but it is unfortunately limited to the axial plane. With presently
available CT techniques motion deteriorates any reformatting in
sagittal or coronal projections. The latter two planes are
extremely helpful in delineating the vertical extent of submucosal
spreads. MRI has proven extremely valuable by producing all three
basic projections, plus superior soft tissue contrast. Although
motion artifacts still degrade the images in some patients, newer
pulsing sequences that permit faster scanning are elimi nating most
of these problems."
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