The case is Ashland Hospital Corp. v. Lewis, http://opinions.kycourts.net/sc/2018-SC-000276-DG.pdf (8/29/2019). The defendant, an interventional radiologist, performed a cerebral angiogram to assist in diagnosing the cause of the plaintiff’s chronic headaches. A recovery room nurse told the defendant that the plaintiff was complaining of headache and scotoma (spots in his field of vision). These symptoms may indicate a stroke, but they also are not uncommon after a cerebral angiogram.