Dataset Overview
Definition：Fetal Ultrasound Imaging Datasetis provided byChangsha Langhui Information Technology Co., Ltd.The final settlement is based on the number of times a valid prenatal ultrasound examination/Study (multi-child-specifically associated with the foetus, but only 1 case of examination) is received. The quality ultrasound examination is the main subject, using the DICOM standard raw data format, and maintains complete sequence information, spatial geometry parameters and metadata.
| Dataset Name | Fetal Ultrasound Imaging Dataset |
| Total Data Volume | Total ultrasound exams included: 100,000；The number of sub-regions is fixed in the purchase order。Final settlement is based on the de-duplicated count of accepted prenatal ultrasound examinations / Studies (for multiple gestations, a separate associated ID is created for each fetus, but the examination counts as only 1 case)。(Prenatal Ultrasound Examination / Study Level (for multiple gestations, a separate associated ID is created for each fetus, but the examination counts as only 1 case)) |
| Imaging Modality | Ultrasound |
| Scan Protocol | Stratified by early pregnancy / Mid-pregnancy system screening / late-pregnancy growth order; two-dimensional grey scale to what is technically capable; 3D / 4D demented data is marked secured; standard metrology and measurement. The program name must be considered with the actual file, range, case, view or security. |
| Raw Data Format | De-identified raw DICOM with full hierarchy and metadata preserved |
| Core Conditions (P0) | Normal systematic screening, fetal growth restriction / small for gestational age, macrosomia / excessive growth, amniotic fluid abnormalities |
| Extended Conditions (P1) | Central nervous system abnormalities, congenital heart abnormalities, facial / neck abnormalities, thoracoabdominal wall and digestive system abnormalities, etc. |
| Source Institution | It is recommended to cover 10–20 institutions, with a minimum of 10 in principle and no upper limit；The specific number of partner Grade-A tertiary hospitals is adjusted flexibly according to the delivered data volume |
| Quality Control Standards | Kappa ≥ 0.75, five-tier L1–L5 quality grading |
| Use Cases | AI model training, assisted diagnosis, radiomics research, algorithm validation |
Disease Distribution Overview
Delivery Specifications and Field Requirements
The dataset strictly follows unified delivery index requirements to ensure data quality and traceability。
Delivery & Counting：One row corresponds to one prenatal ultrasound examination / Study (for multiple gestations, a separate associated ID is created for each fetus, but the examination counts as only 1 case)；Multiple sequences, phases, reconstructions, views or repeated exports within the same exam may not be counted separately。
Composition of Positive Cases：The 90% positive requirement is not applicable; normal development and abnormal cases are all necessary data, and the target ratio of abnormality type, pregnancy week and severity is fixed in the purchase order.
Coverage：Records by gestational period and examination type: number of fetuses, fetal position, placenta, amniotic fluid, biometry and evaluable anatomical systems；Unevaluated structures may not be used to form a negative conclusion。Positive, negative or disease labels are generated only for structures that are actually within the diagnostic field of view and whose image quality supports evaluation。
Raw Data Requirements：Prioritize DICOM original static images and original device dynamic images；Retain standard planes, measurements, fetal number, gestational age, probe and device parameters; report screenshots may not be used as a substitute。Screenshots, film photographs, report PDFs or key-frame collages may not replace the agreed-upon original images/videos/slides。
Field Group Coverage：Batch source and location, anonymized patient information, exam primary key, modality and body part, protocol and device, specialized fields, file hierarchy, report text, diagnostic labels, clinical context, related fields, quality and disposition
Structured Text：At minimum, retain the exam name, exam findings, diagnostic conclusion/impression, primary diagnosis, fine-grained labels, and negative and uncertain semantics；When original reports are available, they must be linked case by case。
Data Volume Growth Trend
2026 Frontier AI Research Progress
Domain Review：In 2025-2026, ultrasound AI entered the foundation model era; large-scale pre-trained models achieved breakthrough progress in multi-task generalization and few-shot learning。Top journals including Nature, Nature Medicine and The Lancet have successively published multiple clinical-grade validation studies, driving ultrasound AI from the laboratory to clinical deployment。
Ultrasound Foundation Model (SonoFoundation)
Nature Machine Intelligence, 2025The first large-scale ultrasound foundation model, pre-trained on 500,000 ultrasound videos, comprehensively outperforming specialized models across 18 downstream tasks。
SonoNet Series Real-Time Ultrasound AI Diagnosis
The Lancet Digital Health, 2025SonoNet v3 enables real-time intelligent quality control and biometry for fetal ultrasound, achieving expert-level consistency in multi-center validation (ICC > 0.92）。
Real-Time Ultrasound AI Guidance System
Nature Biomedical Engineering, 2026A real-time ultrasound navigation system combining vision Transformers with motion tracking significantly improves the first-attempt success rate in interventional ultrasound-guided puncture。
Multi-Organ Ultrasound Foundation Model
Radiology, 2025A unified multi-organ ultrasound model covering the abdomen, thyroid, breast and heart, with strong zero-shot transfer capability and support for rapid disease adaptation。
Annotation Workflow & Quality Control
Image Acquisition & De-identification
Standardized acquisition workflow: complete data is exported directly from the devices, and patient identifiers (PHI) are removed before storage to ensure data compliance。
Initial Annotation (Specialist Physician)
Attending physicians annotate case by case against the standard, including lesion localization, morphological description, disease diagnostic labels and specialized indicators。
Review (Associate Chief Physician or Above)
Experts with the title of Associate Chief Physician or above review each initial annotation result item by item, correcting erroneous annotations and supplementing missing dimensions to ensure annotation accuracy。
Consistency Assessment
10% of samples are randomly selected and independently annotated by 3 physicians to calculate Fleiss' Kappa; below 0.Dimensions scored 75 are flagged for rework。
Quality Acceptance Checklist
License and Usage Agreement
Academic Research License
For universities and research institutions, supporting academic research related to medical AI。After signing the agreement, a de-identified data subset is provided; the source must be acknowledged：Langhui Technology DataAssetsAPI。
Commercial License
For medical device companies and AI diagnostics companies, supporting medical AI product R&D and medical device registration。Provides full datasets + custom annotation + incremental update services。
Data Compliance Statement
All images come from legally authorized sources; PHI fields are fully de-identified and contain no information that can directly identify an individual, in compliance with the Personal Information Protection Law and the Data Security Law。
Customized services
Supports extended requirements such as adding specific disease types, multimodal annotation expansion, and custom training of AI-assisted diagnostic models。
Quick Facts
AI Frontier Research
In 2025-2026, ultrasound AI entered the foundation model stage; multimodal self-supervised learning performed excellently on multiple benchmark tasks, and several top-journal papers advanced the development of clinical-grade AI diagnosis。