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癌胚抗原 (ＣＥＡ)广泛存在于肠癌和其他恶性肿瘤中。放射性核素标记的抗ＣＥＡ单克隆抗体 (ＭｃＡｂ)放射免疫显像适用于ＣＥＡ阳性肿瘤原发或复发灶的探测以及术后瘢痕与复发灶的鉴别诊断。利用ＭｃＡｂ的特异性定位功能和发射 β射线的核素对肿瘤具有杀伤作用发展起来的肿瘤
Carcinoembryonic antigen (CEA) is widely found in colorectal cancer and other malignancies. Radionuclide-labeled anti-CEA monoclonal antibody (McAb) radioimmunoimaging is suitable for the detection of primary or recurrent tumors in CEA-positive tumors and for the differential diagnosis of post-operative scar and recurrence. The use of McAb specificity of the positioning function and the emission of β-ray radionuclide tumor has a killing effect on the development of the tumor