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Flashcards in Immobilization Devices Deck (13)
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1

Why are immobilization devices used?

1. reproducibility
2. accuracy
-not moving, losing marks
-no change/ alteration
-allow for specific positioning

2

missing a tumor __-__ times can result in failure of treatment

1,2

3

__ % or greater in differences in dose result in possible failure of treatment

10

4

In a study, __% of patients had errors in treatments.
-chest, abdomen, pelvis

15

5

3 categories of immobilization Devices

1. Patient positioning aids
2. Simple Imm Dev
3. Complex Imm Dev (customized)

6

PPA-TX sponges

A-F
B= neutral
C= chin elevated a little bit
F= raises head

7

PPA-Prone Pillow

supports chest
head up
arms need to be in the same position every time

8

PPA-Arm Board

gets arms out of treatment field

9

Simple Immobilization devices- bite block

do restrict movement, not as much as complex
* in addition to positioning aids
-tape, velcro, bite blocks, arm & foot straps

10

arm stretcher

for head and neck treatments, to get shoulders out of the way
Indicators for how long it needs to be

11

complex immobilization devices- Alpha Cradle

restrict patient movement
reproducibility
*styrofoam
*cannot reuse alpha cradles
Advantage of aquaplast- you can mark on it
*heat to 160 degrees

12

complex immobilization devices- vac bag

let air out
let it in if you mess up

13

complex immobilization devices- aquaplast mask

can attenuate beam
-cut out as little as possible