What target expansions do you use when treating with 60 Gy in 15 fractions for the lung?

Is CTV needed with hypofractionated radiotherapy, such as 60 Gy in 15 fractions for stage III NSCLC, in the modern era of IGRT?

Reducing the irradiated volume is crucial for improving the therapeutic ratio for locally advanced NSCLC (LA-NSCLC) patients. Technological advancements in radiotherapy tar...

I skip the CTV and go straight to the PTV, which can be as tight as 5 mm and up to 10 mm if there are off-axis setup or CBCT imaging concerns. I don't use this fractionation with concurrent chemotherapy, and only do so when chemotherapy is omitted or delivered sequentially.