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Characterization of Fetal Lung With Quantitative Ultrasound

Who can join

Ages 18 to 45 · Women · Healthy volunteers welcome

Inclusion Criteria:

* Pregnant females ages 18 to 45 years old with singleton pregnancy, live fetus, gestational age between 32.1 and 36.7 weeks, not in labor, scheduled for routine ultrasound growth evaluation.
* Gestational age determined by the date of the last menses, and confirmed by measurement of the crown-rump-length on transabdominal ultrasound.

Exclusion Criteria:

* Subjects unable to consent
* Active Labor
* Fetal malformations of the lungs
* Prescription of corticosteroids prior to ultrasound evaluation
* Pre-gestation or gestational diabetes mellitus
* Low English proficiency, needing an interpreter

About the study

The purpose of the study is to show if it's possible to use a special kind of ultrasound called backscatter quantitative ultrasound (bQUS) to check on a baby's lungs when the mother is 36 weeks pregnant. 16 participants will be on study for a single 30 minute ultrasound between 32 and 36 weeks of pregnancy.

What is being tested

• Backscatter Quantitative Ultrasound (device)

Sponsor: University of Wisconsin, Madison · Participants: 16 · Started: Dec 17, 2024

Contact the study team

• UW Ob/Gyn Human Subjects Core · Phone: 608-890-3345

Official record on ClinicalTrials.gov — NCT06722365

Locations in the U.S.

From ClinicalTrials.gov, data retrieved Oct 2, 2026. Each study sets its own eligibility; the study team decides who can join.