Abstract #2673

Quantitative and Qualitative Correlation of 0.55T MRI to CT for Normal Anatomic Structures and Common Pulmonary Pathologies

Felicia Tang¹, Timothy Chen², Sayedomid Ebrahimzadeh², Brandon K.K. Fields², Jonathan Liu², Yoo Jin Lee², Adam Yen², Kiara Bowers¹, Brandon Schonour³, Pan Su⁴, Peder Larson², Yang Yang², and Jae Ho Sohn²

¹School Of Medicine, University of California, San Francisco, San Francisco, CA, United States, ²Department of Radiology & Biomedical Imaging, University of California, San Francisco, San Francisco, CA, United States, ³College of Medicine, University of South Alabama, Mobile, AL, United States, ⁴Siemens Medical Solutions USA, Inc., Malvern, PA, United States

Synopsis

Keywords: Low-Field MRI, Low-Field MRI, Lung, Tissue Characterization, Reader Performance Study

Motivation: Although MRI has had low adoption in lung imaging due to susceptibility artifacts, limiting its utility in pulmonary parenchymal imaging, low-field MRI (0.55T) has potential to address those limitations.

Goal(s): However, its thoracic diagnostic capabilities remain indeterminate, so our goal was to compare its ability to detect common lung pathologies to chest CT and provide comparable quantitative measurements.

Approach: Structures and pathologies were measured with both modalities, and two radiologists identified lung pathologies with MRI only.

Results: Results indicated that readers were able to detect pathologies using 0.55T MRI, serving as a first step in exploring 0.55T MRI as an alternative modality.

Impact: Our study revealed potential for 0.55T MRI as an emerging tool for MR-based anatomic evaluation of the lung, and its limitations. This can expand lung imaging options and potentially provide better tissue characterization for diagnoses like lung cancer.

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