Overall attendance at RSNA 2018 edged up slightly compared with the 2017 edition of the conference. Last year's meeting also saw an increase in the key category of professional attendees, which includes doctors.
In all, RSNA 2018 saw 52,985 attendees visit Chicago's McCormick Place, up less than 1% from 52,657 total attendees in 2017. There were 27,435 professional registrants, of whom 2,733 were online-only, up 1.7% from 26,966 professional attendees in 2017, a figure that also included online-only attendees.
| Official RSNA attendance, 2014-2018 | |||||
| Attendee type | 2014 | 2015 | 2016 | 2017 | 2018 |
| Total | 56,026 | 51,922 | 54,037 | 52,657 | 52,985 |
| Professional | 28,807 | 26,778* | 26,988* | 26,966* | 27,435* |
Vendor activity also edged up at the 2018 edition of RSNA.
| RSNA vendor attendance, 2016-2018 | |||
| 2016 | 2017 | 2018 | |
| Technical exhibition area | 412,000 sq ft | 422,175 sq ft | 433,800 sq ft |
| Exhibitors | 663 | 692 | 723 |
| First-time exhibitors | 104 | 141 | 130 |
RSNA estimated that its meeting last year contributed $160 million to Chicago's economy. RSNA 2019 will be held December 1-6, 2019, with a theme of "See possibilities together."
