Abstract
BACKGROUND: Dynamic contrast-enhanced (DCE) MRI is the most sensitive method for detection of breast cancer. However, due to high costs and retention of intravenously injected gadolinium-based contrast agent, screening with DCE-MRI is only recommended for patients who are at high risk for developing breast cancer. Thus, a noncontrast-enhanced alternative to DCE is desirable.
PURPOSE: To investigate whether velocity selective arterial spin labeling (VS-ASL) can be used to identify increased perfusion and vascularity within breast lesions compared to surrounding tissue.
STUDY TYPE: Prospective.
POPULATION: Eight breast cancer patients.
FIELD STRENGTH/SEQUENCE: A 3 T; VS-ASL with multislice single-shot gradient-echo echo-planar-imaging readout.
ASSESSMENT: VS-ASL scans were independently assessed by three radiologists, with 3-25 years of experience in breast radiology. Scans were scored on lesion visibility and artifacts, based on a 3-point Likert scale. A score of 1 corresponded to "lesions being distinguishable from background" (lesion visibility), and "no or few artifacts visible, artifacts can be distinguished from blood signal" (artifact score). A distinction was made between mass and nonmass lesions (based on BI-RADS lexicon), as assessed in the standard clinical exam.
STATISTICAL TESTS: Intra-class correlation coefficient (ICC) for interobserver agreement.
RESULTS: The ICC was 0.77 for lesion visibility and 0.84 for the artifact score. Overall, mass lesions had a mean score of 1.27 on lesion visibility and 1.53 on the artifact score. Nonmass lesions had a mean score of 2.11 on lesion visibility and 2.11 on the artifact score.
DATA CONCLUSION: We have demonstrated the technical feasibility of bilateral whole-breast perfusion imaging using VS-ASL in breast cancer patients.
EVIDENCE LEVEL: 1 TECHNICAL EFFICACY: Stage 1.
Original language | English |
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Pages (from-to) | 1282-1291 |
Number of pages | 10 |
Journal | Journal of Magnetic Resonance Imaging |
Volume | 54 |
Issue number | 4 |
DOIs | |
Publication status | Published - Oct 2021 |
Keywords
- arterial spin labeling
- ASL
- breast cancer
- DCE-MRI
- noncontrast enhanced
- screening