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已知照射是癌的一个危险因子。例如,最近估计癌症病人中约有2%是由于CT扫描时接受照射所致。虽然一次诊断检查照射量小,但频频影像,不同类型照射剂量积累就有可能积累到致癌的剂量。1993～2001年,最常用、剂量最大心肌灌注扫描每年增加6%。一项新研究,观察18～64岁的近1000000
It is known that irradiation is a risk factor for cancer. For example, about 2% of recently estimated cancer patients are due to exposure to CT scans. Although a small amount of diagnostic examination exposure, but frequently images, different types of radiation dose accumulation may accumulate to carcinogenic dose. From 1993 to 2001, the most commonly used, maximum dose myocardial perfusion scan increased by 6% per year. A new study observes nearly 1,000,000 18-64 years old