Analysis of the relationship between ¹⁸F-FDG PET/CT and ultrasound BI-RADS classification and their combined application in the diagnosis of breast diseases.

The correlation between SUVmax and ultrasound BI-RADS classification is low (r=0.458), indicating that these two methods assess different biological aspects of breast tumors. However, the combined use of SUVmax and BI-RADS classification significantly enhances diagnostic accuracy, particularly for patients with BI-RADS 3 to 4 lesions. Although this combination improves diagnostic efficacy, ¹⁸F-FDG PET/CT should not be used as a primary screening tool but rather as a complementary method in specific clinical scenarios where imaging findings are inconclusive or suspicion of malignancy is high.