Can a ct from 7 years ago be used to diagnosis for current liver hemangioma. a current ultrasound shows a spot on the liver. don't want to waste money.

CT v US for liver: You stated a ct showed a hepatic hemangioma seven years ago and you had an us showing a "spot" on your liver recently. I will assume you had an ordering physician and can gain access to the old ct report. If so, i would venture to say if they are in the same approximate area and size you're probably fine with just the us. Any major difference may need a reconsideration. Talk with your doctor.

Can help: They should look at the old ct to see if there was anything there at that however they will likely still need a new ct because even if it was there then, they would need to see if the size and location has changed.