From 2006:
On Monday morning I pulled on my sweats, hailed a cab, and made my way across town to the office of my cardiologist, unfed and insufficiently slept but on the whole optimistic. A few minutes after arriving I was whisked into an examination room, where a technician threaded an intravenous needle into my right arm and pumped me full of thallium. “You’re going to be radioactive for the next couple of days,” she told me matter-of-factly. “Let us know if you’re going to be traveling by air or if you have to enter a federal building–any place with metal detectors–and we’ll give you a card so that they’ll know why you’re setting off the machine.” Then she escorted me to another room containing a large, ominous-looking machine upon which I reclined motionless while a second technician took pictures of my heart….
Read the whole thing here.