Patient Positioning Flashcards
_____ = patient on their back and is most common patient positioning
supine
______ = patient on their stomach
prone
_______ = patient is laying on their side
decubitus
what does it mean if patient is RT Decubitus or LT Decubitus?
RT Decubitus = patient ON RT side
LT Decubitus = patient ON LT side
HFS stands for -
head first supine
FFS stands for -
feet first supine
who chooses the position the patient is in for treatment?
Rad onc
-patient position is part of rad onc orders for sim
what are other ways to describe “simple immobilization”
standard; basic
what type of immobilization helps to constrain the patient but is not custom to the patient?
simple immobilization
wingboard, breast board, belly board are all examples of what?
-positioning aids
-simple immobilization
-complex immobilization
-simple immobilization
a head holder, grip ring, pillow, knee wedge are all examples of what?
-positioning aids
-simple immobilization
-complex immobilization
-positioning aids
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
prone breast board
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
prone belly board
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
wingboard
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
breast board
what type of immobilization constrains movement and is specific to patient
complex immobilization
Nappi describes which immobilization as which that creates a reproducible set-up?
complex immobilization
aquaplast masks, vaclocs, and alpha cradles are all examples of what?
-positioning aids
-simple immobilization
-complex immobilization
-complex immobilization
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
alpha cradle
what foaming agents are combined to make alpha cradles?
polyurethane and Styrofoam base
…poured into plastic bag that then expands
what complex immobilization device is being described below?
-made w/ small beads of styrofoam
-vacuum sucks out air after patient is positioned
-reusable
vacloc
T/F: vaclocs are reusable
TRUE
what complex immobilization device is being described below?
-thermoplastic material
-molds around patient’s contour
-not reusable
aquaplast
around what temp. does thermoplastic material become moldable/flexible? (F)
160 - 180 F
when thermoplastic mask begins to cool & harden, what color does it change to?
opaque
how are thermoplastic masks heated? - what ways are available
- hot water bath
- oven
the following describes what?
“positioning devices are locked into the treatment table”
“notches on the PSA with labels”
indexing
what does indexing equipment help with?
interfraction motion and reproducibility
- making sure patient is on right spot of trt couch everyday = indexing helps accomplish
variation of motion WITHIN a fraction = __________
intra-fraction
the variation BETWEEN fractions = ________
inter-fraction
lasers in trt room are located where?
on walls and ceiling
what do lasers in treatment room help with?
help level and position the patient
what lasers do we have in trt room?
sagittal (located on wall opp of gantry), ceiling (X; must move gantry to even see it), side lasers (Y)
side lasers in trt room project in a ____ beam
fan
what lasers in trt room show vert and horizontal plane?
- considered our leveling lasers
side lasers (side wall lasers)
