? Factors affecting the labelling yield and optimal labelling procedures of 186 Re labelled HEDP are reported Results showed that after intravenous injection of 186 Re-HEDP
a greater concentration was demonstrated in bones
time of peak level being 2h Two hours after injection
186 Re-HEDP distribution of %ID/bone was 3248±104; that of 99m Tc-HEDP was 1781±278; 153 Sm-EDTMP was 222±427 Rabbit bone scan showed clear imaging in the skeletal system Twenty four hours urine excretion was 69±15 Blood clearance was relativity rapid conforming to two phase distribution Thus 186 Re-HEDP can be used in the treatment of bone metastasis and possibility exist that it will soon be available as kit in the near future