Ask a Dog Vet and Get Answers to Your Dog Health Questions
I am sorry to hear you are worried about Titi. My name is Rebecca. I am a veterinarian and will do my best to help.
There are many reasons for a dog to vomit: something they ate, an infection, internal organ disease (liver, kidney, pancreas), parasites. A scan should tell you if there is a blockage in the stomach or intestines, but won't tell you if there is infection, parasites, or internal organ disease.
Is he getting any medication for gastritis? How long has he been vomiting?
If medication is not helping, and he continues to vomit it might be time to start with an Xray and see what that shows. Let me know what other questions you have.
If it has been a year, I would do an Xray, and probably blood tests. It will help to know what he is eating, and if he is getting any medication, and if that is helping.
I hope you were able to see my response! How is Titi doing? Can I help with or answer any other questions?