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The Use of Prenatal Ultrasound in the First Trimester

• Published: April 1998
• Revised: January 2008
• Topic: Prenatal
• Scope: Case finding
• Abstract: Obstetrical ultrasound in the first trimester accounts for approximately 30 percent of all obstetrical imaging. This guideline is intended to assist health care professionals caring for pregnant women in determining the appropriate use of prenatal ultrasound examination in the first trimester.
• Target Population: Women in the first trimester (14 weeks) of pregnancy
• Exclusions: Women in later stages of pregnancy
• Working Group Membership: Family physicians, obstetricians, perinatologist, neonatologists, geneticist, radiologist, pathologist, sonographer, midwife, prenatal educator, consumer, Alberta Health and Wellness representative