The percentage depth dose for a 10cm x 10cm field size on a 10MV linac at a depth of 10cm is 64.8%. What is the new %DD for the same machine and same field size, and same depth but at an SSD OF 120cm?
Blog
A CBCT must rotate through a minimum of how many degrees?
A CBCT must rotate through a minimum of how many degrees?
Find the MU necessary to deliver 300cGy per day using 16MeV…
Find the MU necessary to deliver 300cGy per day using 16MeV electrons using a 10×10 cone and a patient specific block that are prescribed to the 85% isodose line. Block factor: .899
If the field size is 15.5cm x 15.5cm at 100cm SSD, what is t…
If the field size is 15.5cm x 15.5cm at 100cm SSD, what is the field size at 115cm SSD?
The order of progression for target volume is: GTV, CTV, ITV…
The order of progression for target volume is: GTV, CTV, ITV, PTV
when you have a MU hand calc that is set to an extended SSD…
when you have a MU hand calc that is set to an extended SSD (something greater than 100SSD), what factor correct the PDD for being at an extended distance?
BSF is the ratio of dose on the central axis at Dmax to the…
BSF is the ratio of dose on the central axis at Dmax to the dose at the same point in air
The two goals of a patient setup is to immobilize and locali…
The two goals of a patient setup is to immobilize and localize
Breathhold scan is common to use for left-side breast cancer
Breathhold scan is common to use for left-side breast cancer
Match the name on the left to the definition on the right
Match the name on the left to the definition on the right