Choi PMC, Tsoi AH, Pope AL, et al. - Given that the door-in-door-out (DIDO) time is an important metric for stroke centers without an on-site mechanical thrombectomy service, researchers reported the outcome of a continuous quality improvement program to improve the DIDO time since 2015. Retrospective analysis of consecutive patients transferred between January 1, 2015, and October 31, 2018 from a metropolitan primary stroke center to consider mechanical thrombectomy. Over the 46-month period, 133 patients were transferred. Data reported that median DIDO time decreased by 14% per year, from 111 minutes interquartile range (IQR, 98– 142) in 2015 to 67 minutes (IQR, 55–94) in 2018. In a primary stroke center, a median DIDO time of < 60 minutes can be obtained.