Supine breast US: how to correlate breast lesions from prone MRI

Abstract

Objective: To evaluate spatial displacement of breast lesions from prone MR to supine ultrasound positions, and to determine whether the degree of displacement may be associated with breast density and lesion histotype. Methods: 380 patients underwent breast MR and secondlook ultrasound. The MR and ultrasound lesion location within the breast gland, distances from anatomical landmarks (nipple, skin and pectoral muscle), spatial displacement (distance differences from the landmarks within the same breast region) and region displacement (breast region change) were prospectively evaluated. Differences between MR and ultrasound measurements, association between the degree of spatial displacement and both breast density and lesion histotypes were calculated. Results: In 290/380 (76%) patients, 300 MR lesions were detected. 285/300 (95%) lesions were recognized on ultrasound. By comparing MR and ultrasound, spatial displacement occurred in 183/285 (64.3%) cases while region displacement in 102/285 (35.7%) cases with a circumferential movement along an arc centred on the nipple, having supine ultrasound as the reference standard.

Breast tumor movements analysis using MRI scans in prone and supine positions

“…Because the tumor-positive margin in BCS is highly correlated with the recurrence rate of breast cancer, it is important to have adequate margin resection. Therefore, the area of the tumor should be accurately predicted before surgery; magnetic resonance imaging (MRI) is well-known to be more accurate than mammography or ultrasonography (USG) [1][2][3][4] . MRI is a non-invasive imaging modality and is particularly useful for the scanning and detection of abnormalities in soft tissue structures in the body 5,6 .…”

“…The MRI scan at the supine position is also difficult to perform due to low accuracy of tumor diagnosis due to motion artifacts and low contrast in MRI. Telegrafo et al 4 showed that a key issue for clinical use of pre-operative breast MRI is how to transfer the three-dimensional (3D) information obtained from the patient in prone position to the operating room, since the surgical treatment is performed in the supine position 4,10 . If the location of MRI-detected tumors in the supine position could be predicted, those predicted positions could be used as a surgical planning guide for the surgeon 11,12 , which could then promote a decrease in the re-excision rate of BCS.…”

Clinical Value of Shear Wave Elastography Added to Targeted Ultrasound (Second‐Look Ultrasound) in the Evaluation of Breast Lesions Suspicious of Malignancy Detected on Magnetic Resonance Imaging

“…From a prone position (MRI examination) to a supine position (US examination), there can be a considerable change in the position of a lesion with regard to the clock position in the breast and the distance from the nipple. Telegrafo et al reported the distance of the lesion to the nipple to be the most reliable measurement, changing by 0.7 ± 0.2 cm from the prone to the supine position. We scanned the entire quadrant of the breast surrounding the MRI‐detected lesion with US to detect a US correlate…”

Deformable mapping technique to correlate lesions in digital breast tomosynthesis and automated breast ultrasound images

“…23,24,26,29 A recent study has found favorable results in relating lesions in supine breast ultrasound to prone MRI. 30 Another correlation study showed favorable agreement between ultrasound computed tomography and mammography registration. That research group also used ultrasound to determine the distribution in the breast of Young's Modulus from the speed of sound.…”