结论减少或控制透视比例，降低受检者群体的体表剂量，以减少医疗照射对人体造成的危害。
Conclusions To reduce or control chest fluoroscopic proportion will decrease surface dose from diagnostic X-ray of patients.
结论减少或控制透视比例，降低受检者群体的体表剂量，以减少医疗照射对人体造成的危害。
Conclusions To reduce or control chest fluoroscopic proportion will decrease surface dose from diagnostic X-ray of patients.
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