RT 103 Chapter 2 Flashcards Preview

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Flashcards in RT 103 Chapter 2 Deck (11):
1

Filter applications: Used for areas of the body where tissue density varies gradually from one end to the other along the long axis of the body

Wedge Filter

2

Filter applications: Used for areas of the body where the subject density in the center is much greater than at the edges.

Trough filter

3

Filter applications: A collimator mounted filter created to improve imaging of the lateral projection of the cervicothoracic region, but also used for the axiolateral projection of the hip.

The Ferlic Swimmer's filter

4

Filter applications: Designed to conform to the shape of the shoulder, but can be used effectively for lateral facial bone images.

The Boomerang Filter

5

Filter applications:Used with two of the most challenging projections to obtain: the PA and lateral full-spine projections for evaluation of spinal curvatures.

The scoliosis filter

6

A collimator-mounted Clear Pb filter used for AP projections of the hips, knees, ankles on long (51-inch) film

Supertech wedge filter

7

A collimator-mounted aluminum filter with double wedge used for AP projections thoracic spine

Trough filter

8

A filter used for AP projections of shoulder and facial bones

Boomerang filter

9

A collimator-mounted filter used for lateral projections of cervicothoracic region (swimmer's technique

Ferlic Swimmer's Filter

10

Examples of x-ray projections that have to show a significantly varied tissue density:
1. The anteroposterior (AP) projection of the thoracic spine.
2. The axiolateral projection (Danelius-Miller) method.
3. The lateral cervicothoracic region

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11

Physical principles of compensating principles:
1. Shape- They are shaped for certain parts of the anatomy, but can also be adapted for other body structures.
2. Composition- Composed of substance of sufficiently high atomic number to attenuate the x-ray beam. (Most common materials are aluminum and high density plastics)
3. Placement- Most often placed in the x-ray beam between the x-ray beam and the patient; Two categories are collimator mounted, and Contact compensating

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