Cost per treatment is about $1,400 to $1,500 -- and most patients need an average of 3.5 treatments per year, said Dr. Michael Budler. “It’s not one and done,” Budler said. But one treatment can last weeks to months.”. To date, Advanced Radiology has administered 200 SphenoCath treatments. Of the first 50 patients, 94 percent experienced complete or significant pain relief, Budler said. Clinical studies find 80 percent of patients have long-term relief lasting four weeks to four months.