Obstetric (Pregnancy) Ultrasounds

  • Early Pregnancy Dating (TA or TV)

    Looks at: Gestational sac, baby’s heartbeat, age, and location.
    Reasons: Confirm pregnancy, rule out ectopic, determine weeks.
    Prep:
    • TA = full bladder; TV = empty bladder.

  • OB Limited / Follow-Up

    Looks at: Baby’s growth, amniotic fluid, placenta, position, heartbeat.
    Reasons: Follow-up on prior scan, growth check, position check.
    Prep: None specific.

  • OB Anatomy (Level I)

    Looks at: Full fetal anatomy (head, spine, heart, organs, limbs, placenta).
    Reasons: Routine 20-week anatomy screening.
    Prep: full bladder.

  • BPP – Biophysical Profile

    Looks at: Baby’s breathing motion, movement, tone, amniotic fluid (4 or 5-part score).
    Reasons: High-risk pregnancy, decreased movement, post-dates, diabetes, hypertension.
    Prep: None.

  • Cervical Length

    Looks at: Cervix length and funneling via transvaginal scan.
    Reasons: Preterm labor risk, short cervix, multiple pregnancy.
    Prep: Empty bladder.

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