Magnussen managed to walk away from the accident but was taken to hospital for precautionary checks and to treat a small cut on his ankle.
The Renault driver lost control and ploughed into a tyre barrier at 180 miles per hour on the run up to Raidillon during lap six of the Formula One Belgian Grand Prix.
"He left the vehicle unaided and was taken to the medical centre for precautionary checks".
Magnussen's crash prompted a temporary halt to the race as marshals worked to fix tyre barriers damaged in the impact.
But Renault must quickly decide whether he is fit enough to race at Monza, because replacing Magnussen could prove a headache.
Jimmy Butler Won A Gold Medal At The 2016 Rio Summer Olympics!
They were in control by halftime, however, and were way out front 79-43 by the end of the third quarter. Team USA's pool play seemed lackadaisical or disinterested, but the play picked up in the medal round.
He tweeted: "Thanks for all your messages folks!"
Magnussen, who started 12th on the grid, got out of the auto on his own but was limping slightly. "He is fully conscious and responsive", said a Renault statement.
The safety auto was initially deployed, but damage sustained to the tyre barrier meant the race was suspended to allow for further repairs.
"I'm now really looking forward to the race and trying to crack the top-10 if we can", the 25-year-old rookie told reporters. And the Dane, who is fighting for his future in the sport, also revealed he expects to be on the grid for next Sunday's Italian Grand Prix.
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