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Abstract #2299

Feasibility study of nodule conspicuity for lung screening using ultrashort echo time MRI

Saori Koshino1,2, Takeharu Yoshikawa3, Yukihiro Nomura3, Soichiro Miki3, Shouhei Hanaoka2, Takeyuki Watadani2, Naoto Hayashi3, and Osamu Abe1,2
1Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan, 2Department of Radiology, The University of Tokyo Hospital, Tokyo, Japan, 3Department of Computational Diagnostic Radiology and Preventive Medicine, The University of Tokyo Hospital, Tokyo, Japan

Pulmonary MRI with ultrashort echo time (UTE) is expected to be an alternative to low-dose CT for lung screening. In this study, the feasibility of breath-hold (BH) and respiratory triggered (RT) scans with UTE was investigated. In total, 229 lung MRI examinations that were composed of 136 examinations with a solid nodule (SN) and 93 examinations with a ground-glass nodule (GGN) were evaluated. Both results of qualitative and quantitative assessment suggested that SN was more clearly depicted than GGN. BH scan in pulmonary MRI should be more suitable for lung screening than RT scan.

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