LOL, if you have the patient flow you should. Depending on location starting salary for a newly minted attending straight out of residency is between 350-600k. But that's a small part of the overall costs. Here are the major costs:
1. Linear accelerator: 3-6 million
2. Vault: 500 K.
3. CT Simulator: 300K.
4. Annual maintenance costs of machine and software: 300K.
The radonc is truly a minor cost compared to everything else. I'm not sure why everyone's so afraid of talking about numbers openly. It's not good for medical students, residents, or even attendings to always be in the dark about operating costs. I found a profound amount of ignorance regarding these things in residency and sometimes beyond. Look how many people I pissed off by asking a simple benign question about the cost to read an MRI of the thoracic spine. I'll bet you half the senior radiology residents don't even know how much medicare reimburses for this.
Electroshok, see how often they talk about the business aspect of radiology during your years of radiology residency. I'll guarantee you it probably won't add to any more than 2 hours, while money and finances will be a large part of your professional life. No wonder physicians are the only profession making less every year, year after year, and it's blasphemy to ask the government to match inflation to keep our incomes stable. The most financially successful people in Medicine that I've met were those who had a business acumen.