A clinical comparison of 2 h and 4 h bone scans obtained with 99Tc H.E.D.P

A comparison of 2 h and 4 h bone scan images obtained with technetium labelled H.E.D.P. in ten patients demonstrated no increase in lesion detection rate between the 2 h and 4 h scans. The 2 h bone scans were of sufficient quality to permit identification of tumours in all cases.