Preliminary clinical application of Bremsstrahlung planar imaging

4 patients with skeletal metastases treated with 90Y-EDTMP, 4 patients with hepatocellular carcinoma receiving artery perfusion treatment with 90Y-GTMS and 8 patients treated with 32P-colloid by interstitial and local injection were undergone Bremsstrahlung image with SPECT. High energy collimator was used and a wide energy window was selected by experience. The outline of image attained was clear, the contrast was good and radiopharmaceutical biodistribution could be clearly defined. It is concluded that this technique is of value for observing the clinical course, evaluating the effect of treatment, and predicting prognosis, and explaining clinical phenomena in patients treated with pure β emitter