Chapter 8 : Overview of Diagnostic Imaging of the Head and Neck

Question 1

The view that displays the frontal sinuses and posterior ethmoid air cells

Answer 1

Caldwell view

Question 2

Lateral view of the mastoid obtained with 30 degrees of cephalocaudad angulation

Answer 2

Schüller projection

Question 3

An oblique projection of the petrous bone obtained with the patient’s head slightly flexed and rotated 45 degrees toward the side opposite the one under study; the beam is angulated 14 degrees

Answer 3

Stenvers projection

Question 4

best radiographic method for evaluating duct anatomy in obstructive, inflammatory, and autoimmune salivary gland diseases

Answer 4

Conventional sialography

Question 5

Imaging standard for the detection of internal audi- tory canal (IAC), facial nerve canal, and jugular foramen lesions

Answer 5

MRI

Question 6

During the occasional provocative mauevers done in the CT of the larynx, how does blowing through a small straw or using a cheek-puffing (modified Valsalva) affect the larynx?

Answer 6

Primarily distends the hypopharynx and supraglottic larynx

Question 7

During the occasional provocative mauevers done in the CT of the larynx, where does breath holding position the vocal cords? (adducted or abducted)?

Answer 7

Adducted

Question 8

During the occasional provocative mauevers done in the CT of the larynx, Phonating “eeee” causes the vocal cords to _______ (Adduct or abduct) into the _________ posiiton

Answer 8

Phonating “eeee” causes the vocal cords to partially adduct into the paramedian position.

Question 9

During the occasional provocative mauevers done in the CT of the larynx, Quiet breathing places the vocal cords in a partially ______ (adducted or abducted?) position

Answer 9

Abducted

Question 10

Main pathophysiology of laryngocele?

Answer 10

Increased intraglottic pressure (glass blowers)

Question 11

2 types of laryngocele

Answer 11

1. Internal laryngocele - tracks superiorly within the paralaryngeal fat
2. External laryngocele - extends superolaterally, and pierces the thyrohyoid membrane and can appear as a neck mass

Question 12

What is the best indicator of cartilage invasion in CT of the larynx?

Answer 12

Presence of a tumor on the external margin of the thyroid cartilage in the strap muscles

Question 13

The anterior commissure should be less than ____ mm thick; greater thickness in this area represents tumor spread from the anterior margin of one cord to another

Answer 13

1mm thick