Machine Operations Flashcards
the following describes direct or indirect patient monitoring?
-therapist can see patient through lead lined glass
-this type of monitoring is seen with kV or orthovoltage unit
-seen with CT
direct
the following describes direct or indirect patient monitoring?
-therapist can only see patient through monitors
-seen with MV units
-seen with treatment machines
indirect
what type of monitoring is paired with kV or orthovoltage units?
what about MV units?
kv and orthovoltage get direct monitoring
MV units get indirect – cause need more shielding and we cannot directly monitor patient
____ and ____ contact must be possible at all times for the treatment to occur
audio and visual
audio communication must be ____ form of communication
two-way
– therapist can hear in room constantly
–patient can hear therapist at console when button is pressed
T/F: visual AND audio must be on constantly and working for treatment to continue
TRUE
RV stands for what?
Record and Verify
_____ system also records each trt for each patient
Record and Verify system (RV)
what system allows for communication between the trt planning system and the LINAC console?
RV (Record and Verify system)
what system will display the parameters of the machine setup from the treatment plan and compares it with what the machine is set to at that time
RV (Record and Verify system)
T/F: if parameters are NOT in tolerance for the machine/trt, the RV system will prevent us from beaming on
TRUE
the treatment couch is
- __heavy/light___ weight
- made of ______ ______
- ___flat/curved____
lightweight
made of carbon fiber
flat
treatment couch can also be called what?
-______
-_______
-PSA (patient support assembly)
-pedestal
there are ___ degrees of freedom or ____ degrees of freedom for our treatment couches
4-degrees of freedom or there can be 6-degrees of freedom
the minimum degrees of freedom for a PSA are ___-degrees
4-degrees
all couches have at least 4 degrees of freedom
what are the 4 degrees of freedom for a PSA?
X, Y, Z
ie. translational and yaw
“yaw” means what?
rotation/couch kicks
translational directions are what?
vertical
lateral
longitudinal
all PSA’s have a minimum of 4-degrees of freedom, but some have additional degrees to equal __-degrees of freedom
6
what are the 6 degrees of freedom?
the 4 DOF including pitch and roll
so –> translational (X, Y, Z), yaw, pitch and roll
DOF = ____ _____ _____
Degrees of Freedom
which trt couch DOF has greater trt accuracy?
6-DOF
old couches had ____ at the top that would decrease attenuation of the beam allowing for more radiation to cross through the couch
mesh
where is the treatment console located?
at the desk
pendants are located ___inside/outside___ the trt room
inside the trt room
what must be pressed in order to use hand pendants?
motion enable bars
