Pronunciation: [ˈɛf ˌɛfdˌiːd͡ʒˈiː] (IPA)
Correct spelling for the English word "F FDG" is [ˈɛf ˌɛfdˌiːd͡ʒˈiː], [ˈɛf ˌɛfdˌiːdʒˈiː], [ˈɛ_f ˌɛ_f_d_ˌiː_dʒ_ˈiː] (IPA phonetic alphabet).
Correct spelling for F FDG