Comparison of Ga-67 Citrate images Obtained

Gallium-67 was first introduced as a tumor imaging agent by Edwards and Hayes in 1969 (1). It has subsequently gained wide popularity for the evaluation of specific tumors, and more recently for the detection of inflammatory lesions. A major limi tation in the clinical application of this radionuclide is the relatively poor quality of the images produced using available imaging devices. Recently, Anger cameras with 15-in.-diam fields have become com mercially available, and they can be equipped with three separate energy windows, a medium-energy collimator, and a moving-table attachment. Such instruments should be well suited for the imaging of Ga-67. The purpose of our study was to compare th