9 9 m ▁and ▁th al li um - 2 0 1 ▁have ▁similar ▁typical ▁effective ▁dos es ▁( 1 5 - 3 5 ▁m S v ). ▁The ▁posit ron ▁emission ▁tom ography ▁( P ET ) ▁trac er ▁nit ro gen - 1 3 ▁am mon ia , ▁though ▁less ▁widely ▁available , ▁may ▁offer ▁significantly ▁reduced ▁dos es ▁( 2 ▁m S v ). ▁Str ess - only ▁protocol s ▁may ▁also ▁prove ▁to ▁be ▁effective ▁at ▁reducing ▁costs ▁and ▁patient ▁expos ure . ▁ ▁References ▁ ▁Category : Card iac ▁imag ing ▁Category : 3 d ▁nuclear ▁medical ▁imag ing ▁Category : T ech net ium - 9 9 m <0x0A> </s> ▁Pam pl in ▁City ▁is ▁a ▁town ▁in ▁App om atto x ▁and ▁Prince ▁Edward ▁count ies ▁in ▁the ▁U . S . ▁state ▁of ▁Virginia . ▁The ▁population ▁was ▁ 2 1 9 ▁at ▁the ▁ 2 0 1 0 ▁census . ▁ ▁The ▁App om atto x ▁County ▁portion ▁of ▁Pam pl in ▁City ▁is ▁part ▁of ▁the ▁Lyn ch burg ▁Metropolitan ▁Statist ical ▁Area . ▁ ▁History ▁Pam pl in ▁is ▁the ▁home ▁of ▁a ▁Clay ▁Pi pe ▁Factory , ▁formerly ▁the ▁largest ▁cl ay ▁pipe ▁factory ▁in ▁the ▁United ▁States . ▁It ▁is ▁located ▁to ▁the ▁side ▁of ▁Business ▁ 4 6 0 . ▁ ▁It ▁was ▁listed ▁on ▁the ▁National ▁Register ▁of ▁Historic ▁Places ▁( NR HP ) ▁in ▁ 1 9 8 0 . ▁The ▁Buff alo ▁Pres by ter ian