预产期与孕周估算
根据末次月经首日及规律周期长度估算预产期,并按指定日期显示估算孕周。
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{"fields":[{"key":"lastPeriod","label":["末次月经第一天","First day of last period"],"type":"date","value":"2026-07-01"},{"key":"cycle","label":["规律周期长度(天)","Regular cycle length (days)"],"type":"number","value":28,"min":21,"max":35,"step":1},{"key":"asOf","label":["查询日期","As-of date"],"type":"date","value":"2026-09-08"},{"key":"regular","label":["日期可靠且周期规律(非辅助生殖)","Reliable date and regular cycles; not IVF"],"type":"select","options":[["yes",["是","Yes"]],["no",["否","No"]]],"value":"yes"}],"title":["预产期与孕周估算","Due Date & Gestational Age"],"engine":"pregnancy-dates","scope":["日期不确定、周期不规律或辅助生殖请采用产科给定日期。仅估算,不判断怀孕、胎儿健康或选择分娩时机。","Uncertain dates, irregular cycles and assisted reproduction need clinical dating. Not a pregnancy test or assessment of fetal health."]}