All patients will complete best standard of care radiation, temozolomide and bevacizumab (6 weeks). Within two weeks of completion of this initial treatment period, study patients will be fitted with the NovoTTF-100A System and treated continuously. They will be treated with TTFields for 12 months for an average of 18 hours per day. The patient may elect to take a treatment break for a total of 3 days per month, for each month and still be in compliance. This will consist of wearing four electrically insulated electrode arrays on the head. The patients will also continue with maintenance temozolomide/ bevacizumab.