2. Mevion Medical Systems
Venture capital raised: $150 million
Mevion Medical Systems raised $150 million during the second quarter of 2018 in its later stage of development, according to a MoneyTree report.
The company has developed a proton therapy system that is used in-radiation treatment for cancer patients. Its Mevion S250 proton therapy platform is the only modular, single-room proton therapy system on the market, according to the company.