translation.en: Second, if you're pre-menopausal, try to schedule your mammogram in the first two weeks of your menstrual cycle, when breast density is relatively lower.
translation.zh: 第二，如果你还未绝经， 请尝试把你的乳房X光诊断 计划安排在月经周期的前两周， 这段时间你的乳腺密度相对较低。