What kind of documentation should i expect to get from hospital after an abdominal ct (cat) scan to share with my primary care physician?

Good question: You should receive a DVD with the actual CT scan PLUS a written report BY THE RADIOLOGIST!

CT scan report.: The interpreting radiologist usually gives a report about the structure and any variation in the normal anatomy of all the visible intra abdominal organs like liver, spleen, may be some pancreas, intestine colon, lyphnodes, etc through the ct scan.