Tomography #1

Question 1

During conventional Tomography, the image receptor will?

Answer 1

Move opposite the x-ray tube in a seesaw motion

Question 2

During conventional Tomography, structures lying outside the object plane are blurred because of which of the following?

Answer 2

Motion blur

Question 3

Which of the following is a multidirectional tomographic mode?I. Trispiral II. Elliptical III. Hypocycloidal IV. Linear

Answer 3

I, II, and III

Question 4

Conventional tomography employs which of the following principles?

Answer 4

Motion blur

Question 5

During conventional tomography, the fulcrum is in the?

Answer 5

Focal plane

Question 6

When the tomographic angle is 0 degrees, the tomographic layer will be?

Answer 6

Infinite

Question 7

To obtain a tomographic layer of 1mm, the tomographic angle should be?

Answer 7

50 degrees

Question 8

Which of the following is the MAJOR disadvantage of conventional tomography?

Answer 8

Patient dose

Question 9

The MAJOR advantage of conventional tomography is better?

Answer 9

Contrast resolution

Question 10

The thickness of tissue imaged during conventional tomography is called which of the following?

Answer 10

The tomographic layer

Question 11

The thickness of tissue imaged during linear tomography is determined by which of the following?

Answer 11

Tomographic angle

Question 12

Which of the following tomographic angles would be considered for use in zonography?

Answer 12

5 degrees

Question 13

Conventional tomography has also been called which of the following?

Answer 13

Laminography

Question 14

The tomographic angle is the angle of x-ray tube movement during which of the following?

Answer 14

X-ray exposure

Question 15

Conventional tomography has also been called what?

Answer 15

Laminography,Planigraphy,Stratigraphy

Question 16

Name the five types of multidirectional tomographic modes?

Answer 16

Circular, Elliptical, Figure 8, Hypocycloidal and spiral(trispiral)

Question 17

What is the relationship between tomographic angle and section thickness?

Answer 17

Large angle=Small Thickness; Small Angle=Large thickness

Question 18

When the Grossman principle is used to alter the focal plane level, ________ remains stationary and ________ is raised or lowered?

Answer 18

Fulcrum, Table

Question 19

When the planigraphic principle is used to alter the focal plane, the fulcrum system is ________. The _________ is raised or lowered while the ________ remains stationary.

Answer 19

Adjustable, Fulcrum, Patient

Question 20

What are the essential ingredients for Linear Tomography?

Answer 20

X-ray tube, movable bucky and rigid connecting rod which rotates about a fixed fulcrum

Question 21

X-ray tube, movable bucky and rigid connecting rod which rotates about a fixed fulcrum.
_______ is a special x-ray technique that ______out the _______ of superimposed structures to show clearly the principle structures being examined.

Answer 21

Tomography. blurs. shadows.

Question 22

Tomography is also referred to as __________ ________ _____________?

Answer 22

Body section radiography.

Question 23

The plane of maximum (Sharpest) focus in tomography is referred to as what?

Answer 23

Object/Focal plane

Question 24

How would you locate the tomographic scout level when performing an examination of the kidneys?

Answer 24

Measure patient, divide by 2 and subtract two.