這個我從專業人士方麵說一下吧。 在美國對婦女的mammography檢查是Federally

controlled! 您說的那種情況極其少見！可以負責任地告訴你，做這個國家，各個洲，監控很嚴。

Do a search about MQSA (mammography quality standard act) you will find a lot more information about the breast cancer program. Mind you, it is the ONLY federally mandated and closely watched program, which has been a tremendous help for women health.