Patent ID: 7534418

Claim:
A composition comprising a radio-labeled compound, wherein said radio-labeled compound is selected from the group consisting of [ 11 C](−)-β-hydroxyphenethylguanidine, [ 11 C]para-methoxy-phenethylguanidine, [ 11 C]meta-hydroxyphenethylguanidine, [ 11 C]para-hydroxyphenethylguanidine, [ 11 C]3,4dihydroxyphenethylguanidine, N-[ 11 C]guanyl-meta-octopamine, N-[ 11 C]guanyl-norepinephrine, N-[ 11 C]guanyl-(−)-metaraminol, [ 14 C](−)-β-hydroxyphenethylguanidine, [ 14 C]para-methoxy-phenethylguanidine, [ 14 C]meta-hydroxyphenethylguanidine, [ 14 C]para-hydroxyphenethylguanidine, [ 14 C]3,4-dihydroxyphenethylguanidine, N-[ 14 C]guanyl-meta-octopamine, N-[ 14 C]guanyl-norepinephrine, N-[ 14 C]guanyl-(−)-metaraminol, meta-[ 18 F]fluorophenethylguanidine, para-[ 18 F]fluorophenethylguanidine, ortho-[ 18 F]fluorophenethylguanidine, para-[ 18 F]fluoro-meta-hydroxy-phenethylguanidine, ortho-[ 18 F]fluoro-meta-hydroxy-phenethylguanidine, para-hydroxy-meta-[ 123 I]iodo-phenethylguanidine, para-hydroxy-meta-[ 124 I]iodo-phenethylguanidine, and para-hydroxy-meta-[ 131 I]iodo-phenethylguanidine.