# Added Value of Contrast-enhanced Ultrasound for BI RADS 4A Nodules

> **NCT04929132** · — · UNKNOWN · sponsor: **Second Affiliated Hospital, School of Medicine, Zhejiang University** · enrollment: 500 (estimated)

## Conditions studied

- Ultrasound
- Breast Cancer
- Pathology

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT04929132
- **Lead sponsor:** Second Affiliated Hospital, School of Medicine, Zhejiang University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** UNKNOWN
- **Start date:** 2019-01-01
- **Primary completion:** 2021-12-30
- **Final completion:** 2021-12-31
- **Target enrollment:** 500 (ESTIMATED)
- **Last updated:** 2021-06-18


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04929132

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04929132, "Added Value of Contrast-enhanced Ultrasound for BI RADS 4A Nodules". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT04929132. Licensed CC0.

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