I will be having my first PET scan next week, and I need a high-protein, very low-carb, zero-sugar diet the day before. The problem is, I’m already on a liquid diet; even soft foods such as cottage cheese are extremely painful to eat. I’m pretty much subsisting on milkshakes, Ensure/Boost, and ice cream with occasional small amounts of smooth soup. I’ve become hypersensitive to spicy or sour foods (this is totally unlike my previous normal diet). I guess broth would be an option, and I was thinking of going to the store and looking at the Atkins Diet stuff. Any other suggestions?