A Lexicon for First-Trimester US: Society of Radiologists in Ultrasound Consensus Conference Recommendations.

Area of Science:

• Radiology
• Obstetrics
• Medical Terminology

Background:

• Current terminology for first-trimester ultrasound findings lacks standardization.
• Inconsistent terminology can lead to misinterpretation and suboptimal patient care.

Purpose of the Study:

• To develop a consensus-based, evidence-driven lexicon for first-trimester ultrasound.
• To establish preferred terms, synonyms, and terms to avoid for clear communication.

Main Methods:

• A multisociety panel convened to develop the lexicon.
• A modified Delphi process was employed, requiring at least 80% consensus.

Main Results:

• Defined intrauterine pregnancy (IUP) and ectopic pregnancy (EP), including cesarean scar implantation as EP.
• Recommended 'cardiac activity' over 'heart motion/heartbeat' and 'early pregnancy loss' (EPL) over 'pregnancy failure'.
• Advised against using 'living' or 'viable' in the first trimester.

Conclusions:

• The new lexicon promotes standardized terminology for first-trimester ultrasound assessments.
• This evidence-based approach aims to improve diagnostic accuracy and patient understanding.
• The established terms facilitate clearer communication among imagers, clinicians, and patients.