Prescription Flashcards
who creates the treatment prescription?
the rad onc
the treatment prescription acts as ________ from the rad onc
orders
what’s included on the trt prescription? (11)
-anatomic site
-fractions
-total dose
-fractionated dose
-fractionation schedule
-trt technique
-beam energy
-imaging
-gating
-bolus
-trt intent
T/F: an electronic signature is OKAY for trt prescription
TRUE
what’s included on the trt plan? (3)
-MUs (monitor units)
-critical structure doses
-DVH (Dose Volume Histogram)
describe differences between CURATIVE and PALLIATIVE intent treatments -
Curative -> tumor control/kill or remove tumor
Palliative -> symptom control/relief/pain relief….
**commonly seen symptoms = pain, bleeding, difficulty breathing, etc. note - emergent cases
Describe why/how TD (total dose) varies depending on nearby OARs -
if the OARs have higher tolerances, you can trt tumor to higher doses too.
ex. prostate w/ TD of 7200 cGy
… compared to abdominal/GI tumors w/ much more sensitive OARs
CURATIVE:
___-____ cGy/fx
__ fx/wk
TOTAL DOSES of _______-______ cGy
180-200 cGy/fx
5fx/wk
TD of 5000-8000 cGy
PALLIATIVE:
___ cGy/fx
__ fx/wk
TOTAL DOSES of _______-______ cGy
TOTAL fracs typically = ____ fxs
300 cGy/fx
5 fx/wk
TD of 3000 cGy
TOTAL fracs typically = 10 fxs
AP/PA spine
AP/PA lung
Whole brain -
the following are examples of CURATIVE or PALLIATIVE TRTS?
PALLIATIVE
which fractionation schedule is described below?
-smaller dose per fx
-more total fractions
hyperfractionation
which fractionation schedule is described below?
-larger dose per fx
-less total fractions
-also called “accelerated”
hypofractionation
which fractionation schedule can also be called “accelerated”
hypofractionation
which fractionation schedule is described below?
-daily fx of 180-200 cGy
-5 days a wk for multiple wks
conventional
which fractionation schedule is described below?
-treated twice a day
-minimum of 6 hrs between the trts
BID
