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Treatment Planning


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DepthAnswer: The distance beneath the skin surface where the prescribed dose is to be delivered (W/L, pg. 494)30false
ExtendedISCF (for _____ Distance Set-ups)40true
factorsMU= (Prescribed Dose) / (RDR×ISCF×Sc×Sp×TMR×Other _____) (W/L, pg. 511).51true
Sterling FormulaAnswer: Equivalent Square= (4(L ×W)) / (2(L +W)) (W/L, pg. 498).70false
Inverse Square LawAnswer: I1/I2 =(D2/D1 )^2 (W/L, pg. 497).80false
acceleratorA patient has a tumor 3.5 cm wide at a depth of 4 cm. What will be the necessary field width at the skin surface to cover the tumor volume plus a 1 cm margin on each side using a linear _____ and isocentric set-up?90true
SourceActivity Half Strength _____100true
maximumA patient is prescribed a dose of 180 cGy at a depth of 10 cm with 10 MV photons at 100 cm SSD. The PDD is 60%. Calculate the dose to the depth of _____ dose.120true
“exposure”The dose rate of the machine; it is the amount of radiation _____ produced by a treatment machine or source as specified at a reference field size and a specified reference distance. (W/L, pg. 496).131true
SCPD])^2 *Reference(Reference distance / Source Calculation Point Dose [_____ distance = 100; SCPD = The set up SSD + Depth (W/L, pg. 508).141true
patientRefers to the energy deposited at a specific point in a medium. The dose is measured at a specific point (in a _____ or phantom) and is commonly measured in Gray (Gy). (W/L, pg. 493).151true
Mosby’sFills in deficits to have a more homogenous dose distribution. Shifts dose lines and brings Dmax closer to the skin surface when skin sparing is not desirable (_____ RT Study Guide, pg. 102).171true
Gap FormulaAnswer: Gap = (L1/2 × d/SSD1) + (L2/2 × d/SSD2) (W/L, pg. 516).200false
LengthCalculate the Gap: Field 1- _____ = 10 cm, Width = 10 cm, Depth = 5 cm, SSD = 100 cm; Field 2- Length = 15 cm, Width = 10 cm, Depth = 4 cm, SSD = 100 cm.220true
SeparationAnswer: The measurement of the patient’s thickness from the point of beam entry to the point of beam exit (W/L, pg. 494).230false
deliveredA patient is treated at 100 cm SSD with 6 MV photons. Collimator setting is 15 cm x 15 cm. There is no blocking. 300 cGy per fraction is to be _____ at Dmax. What is the dose delivered at a depth of 5 cm?270true
machineA patient is being treated at 115 SSD on a 100 cm SAD _____. The collimators have been set to 35 cm X 40 cm. What is the field size on the patient’s skin?280true
volumeTreatment _____ which allows for patient motion and set up uncertainties.300true
Essentials1.5 cm (RT _____, pg. 140).311true
treatmentsThe anatomical point A used when calculating dose for cervical and uterine _____ is located:330true