Patient Positioning

Question 1

_____ = patient on their back and is most common patient positioning

Answer 1

supine

Question 2

______ = patient on their stomach

Answer 2

prone

Question 3

_______ = patient is laying on their side

Answer 3

decubitus

Question 4

what does it mean if patient is RT Decubitus or LT Decubitus?

Answer 4

RT Decubitus = patient ON RT side
LT Decubitus = patient ON LT side

Question 5

HFS stands for -

Answer 5

head first supine

Question 6

FFS stands for -

Answer 6

feet first supine

Question 7

who chooses the position the patient is in for treatment?

Answer 7

Rad onc
-patient position is part of rad onc orders for sim

Question 8

what are other ways to describe “simple immobilization”

Answer 8

standard; basic

Question 9

what type of immobilization helps to constrain the patient but is not custom to the patient?

Answer 9

simple immobilization

Question 10

wingboard, breast board, belly board are all examples of what?

-positioning aids
-simple immobilization
-complex immobilization

Answer 10

-simple immobilization

Question 11

a head holder, grip ring, pillow, knee wedge are all examples of what?

-positioning aids
-simple immobilization
-complex immobilization

Answer 11

-positioning aids

Question 12

what simple immobilization device is being described below?

-elevated w/ window/hole for effected breast to fall through
-used for large, pendulous breasts
-used with tangents

Answer 12

prone breast board

Question 13

what simple immobilization device is being described below?

-window/hole for abdomen
-allows for intestines to hang low and away from treatment field
-prone rectum is typical treat

Answer 13

prone belly board

Question 14

what simple immobilization device is being described below?

-positions patient in supine position w/ arms up
-seen with vacloc or alpha cradle + timo/head rest

Answer 14

wingboard

Question 15

what simple immobilization device is being described below?

-positions patient in supine position w/ arms up
-used for breast treatments
-allows for an angle/incline

Answer 15

breast board

Question 16

what type of immobilization constrains movement and is specific to patient

Answer 16

complex immobilization

Question 17

Nappi describes which immobilization as which that creates a reproducible set-up?

Answer 17

complex immobilization

Question 18

aquaplast masks, vaclocs, and alpha cradles are all examples of what?

-positioning aids
-simple immobilization
-complex immobilization

Answer 18

-complex immobilization

Question 19

what complex immobilization device is being described below?

-immobilization cast
-made w/foaming agents
-patient lies on bag as agent foams and hardens into a specific position

Answer 19

alpha cradle

Question 20

what foaming agents are combined to make alpha cradles?

Answer 20

polyurethane and Styrofoam base
…poured into plastic bag that then expands

Question 21

what complex immobilization device is being described below?

-made w/ small beads of styrofoam
-vacuum sucks out air after patient is positioned
-reusable

Answer 21

vacloc

Question 22

T/F: vaclocs are reusable

Answer 22

TRUE

Question 23

what complex immobilization device is being described below?

-thermoplastic material
-molds around patient’s contour
-not reusable

Answer 23

aquaplast

Question 24

around what temp. does thermoplastic material become moldable/flexible? (F)

Answer 24

160 - 180 F

Question 25

when thermoplastic mask begins to cool & harden, what color does it change to?

Answer 25

opaque

Question 26

how are thermoplastic masks heated? - what ways are available

Answer 26

- hot water bath - oven

Question 27

the following describes what? "positioning devices are locked into the treatment table" "notches on the PSA with labels"

Answer 27

indexing

Question 28

what does indexing equipment help with?

Answer 28

interfraction motion and reproducibility - making sure patient is on right spot of trt couch everyday = indexing helps accomplish

Question 29

variation of motion WITHIN a fraction = __________

Answer 29

intra-fraction

Question 30

the variation BETWEEN fractions = ________

Answer 30

inter-fraction

Question 31

lasers in trt room are located where?

Answer 31

on walls and ceiling

Question 32

what do lasers in treatment room help with?

Answer 32

help level and position the patient

Question 33

what lasers do we have in trt room?

Answer 33

sagittal (located on wall opp of gantry), ceiling (X; must move gantry to even see it), side lasers (Y)

Question 34

side lasers in trt room project in a ____ beam

Answer 34

fan

Question 35

what lasers in trt room show vert and horizontal plane? - considered our leveling lasers

Answer 35

side lasers (side wall lasers)