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应用常规培养微核技术和微量血的细胞质阻断微核技术,观察了上消化道X线钡餐造影前后24h、1个月、4个月和9个月的淋巴细胞微核变化。结果表明,两处平均皮肤受照射剂量5.29cGy的微核率,照射后24h有升高,1个月降低,4个月和9个月都与照前相近。并讨论了低剂量效应与造影的间隔时间。
Micronuclei of lymphocytes were observed by routine culture of micronucleus technique and micro-nucleus of cytoplasm of micro blood. The micronuclei of lymphocytes were observed 24h, 1, 4 and 9 months before and after upper gastrointestinal barium meal radiography. The results showed that the micronucleus rate of 5.29cGy at the two average skin irradiation doses increased at 24h after irradiation and decreased at one month, both at 4 and 9 months. The time interval between low dose effects and contrast imaging was also discussed.