<qa>  What is the name of the study that demonstrated that the TTFields are safe?Applying TTFields at 150 kHz to the brain for the treatment of 1-5 brain metastasis from NSCLC using the NovoTTF-100M device has been demonstrated to be safe in a pilot study, where patients were randomize after local therapy of their brain metastasis by neurosurgery andor stereotactic radiosurgery to receive either NovoTTF-100M treatment or supportive care alone. Eighteen 18 patients have been enrolled in the study. There have been no device-related serious adverse events SAE reported to date Brozova H., et al., Neuro Oncol 2016. 