A Multicenter Study of Artificial Intelligence-assisted Contrast-enhanced Ultrasound Diagnosis of Thyroid Nodules

Inclusion Criteria

Inclusion Criteria: * Patients with thyroid nodules with a solid component ≥5 mm confirmed by conventional ultrasound; * Patients who underwent conventional ultrasound, contrast-enhanced ultrasound, and fine-needle aspiration biopsy; * Patients with a final benign or malignant pathological results. Exclusion Criteria: * Patients with cytopathology of Bethesda I, III, or IV and without final benign or malignant pathology； * Patients with a history of thyroid ablation or surgery; * Patients with low-quality ultrasound images.