Grunnleggende konsepter
Novice users of an AI-powered ultrasonography tool can estimate gestational age as accurately as credentialed sonographers, enabling improved obstetrical care in low-resource settings.
Sammendrag
The study aimed to evaluate the accuracy of an AI-enabled ultrasonography tool in estimating gestational age compared to standard ultrasonography performed by credentialed sonographers. The researchers conducted a prospective study with 400 pregnant individuals in Lusaka, Zambia, and Chapel Hill, North Carolina.
During the study:
- Sonographers established gestational age during an index visit.
- At follow-up visits, novice users performed blind sweeps of the maternal abdomen using the AI-enabled device, while credentialed sonographers conducted fetal biometry with high-specification machines to estimate gestational age.
- The primary outcome was the mean absolute error of the AI approach vs. standard ultrasonography in the primary evaluation window (14-27 weeks).
The key findings were:
- The mean absolute error was similar for AI and standard ultrasonography, with a difference of 0.2 days (95% CI, −0.1 to 0.5).
- The percentage of gestational age estimates within 7 days of the established gestational age was comparable between the AI tool and standard ultrasonography (90.7% vs 92.5%).
- The AI tool performed consistently across study sites and body mass index categories.
The researchers concluded that the AI-powered ultrasonography tool can enable novice users to estimate gestational age as accurately as credentialed sonographers, which has immediate implications for improving obstetrical care in low-resource settings. However, the authors noted that this technology is not a "silver bullet" and that healthcare systems also need trained professionals, basic equipment, and a referral system to manage pregnancy complications.
Statistikk
The mean absolute error was 3.2 days with the AI tool, comparable to 3 days with standard ultrasonography.
The percentage of gestational age estimates within 7 days of the established gestational age was 90.7% for the AI tool and 92.5% for standard ultrasonography.
Sitater
"These findings have immediate implications for obstetrical care in low-resource settings, advancing the World Health Organization goal of ultrasonography estimation of GA [gestational age] for all pregnant people."
"Although this 'low-cost, easy-to-learn technique is a major step forward, it is far from a silver bullet.' Healthcare systems also need 'trained healthcare professionals, basic medications and equipment, and a referral system for managing the pregnancy complications identified with the aid of ultrasonography technology.'"