doctor is very ignorant, ultrasound every 6 months is effective for liver cancer prevention (if it develops after 6 months it cannot be cured)
you are missing all the test to understand how severe is your hbv and if you have any liver damage, ultrasound can only detect cancer nothing else, check for a good liver specialist.
check also medhelp health pages so that you know if doctor is ignorant or good, also be ware that only interferon, tenofovir and entecavir are approved all other drugs make virus mutations
http://www.medhelp.org/health_pages/list?cid=153
if you paid the other doctor i'd ask money back since he didn t check anything and by this might have done a nig damage to you if your hepatitis is serious, stupid ignorant doctors must not have a change to get away without paying for their mistakes