Actress Sophia Bush was left with concussion following an on-set accident while filming her new cop drama Chicago Pd. The star was shooting a scene in which she was required to run after a suspect when the incident occurred. Bush was taken to a hospital and underwent a CT scan, before doctors diagnosed her with concussion. Uploading a picture on Instagram.com showing her wearing a neck brace, she writes, "Had an accident chasing a bad guy through the mean streets of Chicago. "Don't worry y'all. I am okay. The CT scan said so. My brain is in tip top shape despite my concussion. Just a little whiplash and a seriously bruised butt. And a slightly bruised ego. But these war wounds are worth it. My job is the s**t. ChicagoPD."