Anatomia de cuello

Computed

tomography

of the neck

Jo z
#{149}m

Carlos Bob W.

R. Martinez, Gayler,
M.D.*

M.D.*t

Haskins
0.
A vOrth

Kashima, S. Siegelman,

M.D. M.D.*

t.

Stanley

Ae

Computed choice” interpretation cross
THIS EXHIBIT, A SELECTION OF THE GENERAL RADIOLOGY PANEL, WAS DISPLAYED AT THE 67Th SCIENTIFIC ASSEMBLY AND ANNUAL MEFI’INC OF THE RADIOLOGICAL SOCIETY OFNORTH AMERICA, NOVEMBER 15-20, 1981, CHICAGO, ILLINOIS.

tomography for the evaluation ofsuch anatomy

has images,

become ofneck is a detailed

“the masses.

imaging Here, exposition

modality to facilitate of the normal

of the

sectional

of the neck.

Introduction
Computed and uation airway This
*

tomography, detail, has rapidly neck

with masses. reviews

its uniquecapacity

for displaying modality sectional

bone,

soft

tissue

become

the imaging cross

of choice anatomy

in the evalof the neck

of patients with communication

the normal

From

the

Russell

H.

Morgan

Department of Radiology and Radiological Science, The Johns Hopkins Medical Institutions, Baltimore, Maryland. t Presently, Radiological Services, TampaGeneral Hospital, Davis Islands, Tampa, Florida. From the Department of Laryngology and Otology, The Johns Hopkins Medical Institutions, Baltimore, Maryland.
Address R. Martinez, reprints requests to Carlos

as depicted by CT using fifteen reference levels extending from the thoracic inlet. The capabilities and limitations of this technique and interesting cases that illustrate the use of CTin the diagnosis of patients with head and neck tumors will be presented.

the mastoid tip to will be discussed, and management

Material
This report is derived of head and neck tumors. 500) unit. The examinations

and

Methods
for evaluation (AS&E Pfizer with the neck

from the study of 140 patients referred Scans were obtained with a high resolution were carried out in the supineposition

M.D., Radiological vices, Tampa General Hospital, Islands, Tampa, Florida 33606.

SerDavis

slightly hyperextended and during quiet breathing. The scanning plane was parallel to the infraorbitomeatal line. In most instances 10 mm sections were obtained at 10 mm intervals using a 10 second exposure, 20 mA, and 120 kVp. In specific instances, such as the evaluation of the larynx andtrachea or the examination of an uncooperative patient, a shorter (5 second) scanning time and higher (50) mA setting

Volume

3, Number

1

March

1983

RadioGraphics

9

CT

of the

neck

Martinez

et al.

were used. pharyngeal, tumors,

For the laryngeal sections

examination or other were We infusion material

of small

hardening artifacts from heads. This isparticularly obese patient with a short

the humeral true in an neck. This

and a low (-200 lows visualization larities in the

H.U.) level. of minor outline of the

This alirreguairway soft

5 mm

obtained found the of a 30% to be of neck

at 5 mm intervals. rapid intravenous iodinated helpful masses. One prior to the 200 cc were approximately infusion rate without dle difficultycontrast

problem can be partially solved by using a “swimmer’s” position and increasing the tube current. Artifacts from dental fillings can be avoided by obtaining open mouth views slight changes in the scanning or by plane.

that might be obscured tissue settings were used. my,

if only

in the CT evaluation

To represent the normal anato15 scans have been selected, beat the level of thenasopharto the diagram thoracic depicts level.

hundred cc were given first scan; an additional infused at the rate of 20 cc per minute. This was usually achieved if a 19 gauge neewas of

ginning

Motion lowing patient the tongue.

artifacts

produced

by swal-

ynx and extending inlet. This reference some Line from structures of the structures

can be avoided by asking the to...