ViewRay, Inc. announced preliminary results for the fourth quarter and full fiscal year ended December 31, 2018. Recognized 3 revenue units and 1 system upgrade in the fourth quarter of 2018. This resulted in total fourth quarter 2018 revenue of approximately $21 million, compared to fourth quarter 2017 revenue of $19.9 million, primarily from four revenue units. Full year 2018 revenue of approximately $81 million, primarily from 13 revenue units and 2 system upgrades, compared to 2017 revenue of approximately $34.0 million, primarily from 6 MRIdian systems.