Breast MRI in patients with implantable loop recorder: Initial experience Journal Article
| Authors: | Nissan, N.; Ochoa-Albiztegui, R. E.; Fruchtman, H.; Gluskin, J.; Eskreis-Winkler, S.; Horvat, J. V.; Kosmidou, I.; Meng, A.; Pinker, K.; Jochelson, M. S. |
| Article Title: | Breast MRI in patients with implantable loop recorder: Initial experience |
| Abstract: | Objectives: To investigate the feasibility of breast MRI exams and guided biopsies in patients with an implantable loop recorder (ILR) as well as the impact ILRs may have on image interpretation. Materials and methods: This retrospective study examined breast MRIs of patients with ILR, from April 2008 to September 2022. Radiological reports and electronic medical records were reviewed for demographic characteristics, safety concerns, and imaging findings. MR images were analyzed and compared statistically for artifact quantification on the various pulse sequences. Results: Overall, 40/82,778 (0.049%) MRIs during the study period included ILR. All MRIs were completed without early termination. No patient-related or device-related adverse events occurred. ILRs were most commonly located in the left lower-inner quadrant (64.6%). The main artifact was a signal intensity (SI) void in a dipole formation in the ILR bed with or without areas of peripheral high SI. Artifacts appeared greatest in the cranio-caudal axis (p < 0.001), followed by the anterior–posterior axis (p < 0.001), and then the right–left axis. High peripheral rim-like SI artifacts appeared on the post-contrast and subtracted T1-weighted images, mimicking suspicious enhancement. Artifacts were most prominent on diffusion-weighted (p < 0.001), followed by T2-weighted and T1-weighted images. In eight patients, suspicious findings were found on MRI, resulting in four additional malignant lesions. Of six patients with left breast cancer, the tumor was completely visible in five cases and partially obscured in one. Conclusion: Breast MRI is feasible and safe among patients with ILR and may provide a significant diagnostic value, albeit with localized, characteristic artifacts. Clinical relevance statement: Indicated breast MRI exams and guided biopsies can be safely performed in patients with implantable loop recorder. Nevertheless, radiologists should be aware of associated limitations including limited assessment of the inner left breast and pseudo-enhancement artifacts. Key Points: • Breast MRI in patients with an implantable loop recorder is an infrequent, feasible, and safe procedure. • Despite limited breast visualization of the implantable loop recorder bed and characteristic artifacts, MRI depicted additional lesions in 8/40 (20%) of cases, half of which were malignant. • Breast MRI in patients with an implantable loop recorder should be performed when indicated, taking into consideration typical associated artifacts. © 2023, The Author(s), under exclusive licence to European Society of Radiology. |
| Keywords: | adult; clinical article; aged; middle aged; retrospective studies; cancer patient; comparative study; nuclear magnetic resonance imaging; magnetic resonance imaging; breast cancer; image analysis; cohort analysis; breast neoplasms; retrospective study; electronic medical record; feasibility study; image subtraction; diagnostic value; experience; patient safety; radiography; observational study; diffusion weighted imaging; artifacts; breast biopsy; parameters; prostheses and implants; breast magnetic resonance imaging; gadolinium chelate; anterior posterior axis; demographics; procedures; anthropometric parameters; very elderly; humans; human; male; female; article; electrocardiography, ambulatory; image artifact; mri guided biopsy; t2 weighted imaging; t1 weighted imaging; dynamic contrast enhanced imaging; cranio caudal axis; right left axis; ambulatory electrocardiography |
| Journal Title: | European Radiology |
| Volume: | 34 |
| Issue: | 1 |
| ISSN: | 0938-7994 |
| Publisher: | Springer |
| Date Published: | 2024-01-01 |
| Start Page: | 155 |
| End Page: | 164 |
| Language: | English |
| DOI: | 10.1007/s00330-023-10025-3 |
| PUBMED: | 37555957 |
| PROVIDER: | scopus |
| PMCID: | PMC11181953 |
| DOI/URL: | |
| Notes: | The MSK Cancer Center Support Grant (P30 CA008748) is acknowledged in PubMed and PDF -- Corresponding author is MSK author: Maxine S. Jochelson -- Source: Scopus |
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