Elastography is very accurate in terms of determining Cirrhosis. There's mixed data regarding whether or not it's more accurate than a biopsy for detecting early stage fibrosis.
Regardless, you say you 'thought' that you were Cirrhotic. If you had never been clinically diagnosed as such, I would think that the ultrasound result of F3 has confirmed that you are not Cirrhotic.
YOu may have improved your histology with treatment. This is great news.