Correlative Imaging in Breast Radiology: Integrating Ultrasound, Mammography and MRI

Accurate lesion correlation across ultrasound, mammography, and MRI is a critical skill in modern breast imaging, directly impacting cancer detection, biopsy planning, and surgical management. This presentation explores practical strategies to optimise cross-modality correlation and reduce diagnostic uncertainty.

Key topics include:
- Anatomical localisation techniques (clock-face position, depth, quadrant mapping, nipple-to-lesion distance) and use of triangulation
- Positioning differences between modalities and how these affect lesion localisation
- Translating mammographic findings (masses, asymmetries, architectural distortion, calcifications) into targeted ultrasound search patterns
- MRI-to-second-look ultrasound correlation.

This session is designed for sonographers, and trainees looking to learn and refine their correlative imaging techniques in both screening and diagnostic breast practice.

This presentation aims to provide a clear, practical overview of contemporary breast imaging strategies for women at increased risk of breast cancer, with emphasis on risk stratification using tools such as the Tyrer–Cuzick model and the implications of known pathogenic genetic mutations. Personalised, risk-based screening pathways beyond mammography are increasingly central to early cancer detection and it is important to appreciate the impact of age, breast density, and genetic status on protocol design.
The session will outline the roles, strengths and limitations of key imaging modalities, including contrast-enhanced mammography, tomosynthesis, ultrasound and MRI. We will explore how these are combined in different clinical scenarios with a focus on how ultrasound is best applied in specific circumstances and the sonographer’s role within multidisciplinary care.

Introduction: Accuracy in breast lesion localisation across imaging modalities is critical for diagnosis, biopsy and pre-surgical planning. Though mammography and ultrasound are complementary modalities, discrepancies in the recorded distances can occur. This study aimed to assess the level of agreement between mammography and ultrasound measurements in the medial-lateral direction.
Methods: This prospective study was conducted with 100 breast lesions from 73 participants aged between 40-79 years. Craniocaudal mammographic images and corresponding ultrasound examinations were assessed. Nipple-to-lesion distances were measured on individual modalities for the differences to be calculated and later compared.
Results: The mean recorded distance for distance measured under mammography was 3.80± 2.240cm. For ultrasound, the mean recorded distance for horizontal measurements was 3.56cm ± 2.441cm. The mean difference between the two modalities was 0.24cm. Differences of less than 1cm were observed in 90% of the cases, with the largest discrepancy of 3cm occurring in 3% of the cases.
Conclusion: Mammography and ultrasound imaging demonstrated strong agreement in medial and lateral nipple-to-lesion distance measurements. These results support the use of mammographic-sonographic distance measurements to facilitate targeted lesion localisation to reduce the incidence of occult lesions and streamline imaging workflow.
Take home message: Accurate lesion localisation relies on close collaboration between mammographers and sonographers, with consistent patient positioning and adherence to established imaging standards to minimise measurement variability.