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采用￣（９９ｍ）Ｔｃ－ｃｃＭ４ＭｃＡｂ对１０例胃癌病人、４例非胄癌病人进行放射免疫显像（ＲＩＳ）研究，观察了血清ＴＡＧ－７２抗原量、抗体注入量对ＲＩＳ阳性检出率的影响。结果表明注入￣（９９ｍ）Ｔｃ－ｃｃＭ４后，胃癌阳性检出率６０％，肝转移阳性检出率５０％，全部良性病变显示阴性结果。注入抗体８ｈ后为最佳显像时间，给予一定量抗体后，增加抗体用量并不提高ＲＩＳ的阳性检出率。血清ＴＡＧ－７２抗原含量与ＲＩＳ肿瘤阳性检出率明显相关。
A radioimmunoscintigraphy (RIS) study was performed on 10 patients with gastric cancer and 4 patients with non-cancer cancer using ̄(99m)Tc-ccM4McAb. The effect of serum TAG-72 antigen and antibody injection on the positive rate of RIS was observed. . The results showed that after injecting ̄(99m)Tc-ccM4, the positive rate of gastric cancer was 60%, and the positive rate of liver metastasis was 50%. All benign lesions showed negative results. The optimal imaging time was 8 h after the injection of antibody. After a certain amount of antibody was administered, increasing the amount of antibody did not increase the positive detection rate of RIS. The serum TAG-72 antigen content was significantly correlated with the positive rate of RIS tumor detection.