Abstract #1876

Value of ultrashort echo time MRI in pulmonary nodules detection and Lung-RADS grading

Shuo Liu¹, Xinhui Wang², Ying Wang², Yingying Cui², Nan Meng³, Wei Wei³, Yan Bai³, Yu Shen³, Xianchang Zhang⁴, Thomas Benkert⁵, and Meiyun Wang⁶

¹Department of Radiology, Xinxiang Medical University & Henan Provincial People’s Hospital, Zheng zhou, China, ²Department of Medical Imaging, Zhengzhou University People’s Hospital & Henan Provincial People’s Hospital, Zheng zhou, China, ³Department of Medical Imaging, Zhengzhou University People’s Hospital & Henan Provincial People’s Hospital, Zhengzhou, China, ⁴MR Research Collaboration, Siemens Healthineers Ltd, Beijing, China, ⁵MR Application Predevelopment, Siemens Healthineers AG, Forchheim, Germany, ⁶Laboratory of Brain Science and Brain-Like Intelligence Technology, Institute for Integrated Medical Science and Engineering, Henan Academy of Sciences, Zhengzhou, China

Synopsis

Keywords: Lung, Lung

Motivation: Ultrashort echo time (UTE) MRI is a promising alternative to CT for detection and follow-up of pulmonary nodules.

Goal(s): To investigate the efficacy of UTE-MRI for pulmonary nodule detection and Lung-RADS grading.

Approach: Using standard-dose chest CT as gold standard, the capability of UTE-MRI for lung nodule detection, nodule type evaluation, and Lung-RADS grading were investigated.

Results: There were 40 pulmonary nodules detected by CT and 37 by UTE-MRI. There’s good agreement between CT and UTE-MRI in nodule type evaluation (κ=0.757), nodule average diameters measurement (p=0.137, t=1.521), and Lung-RADS classification (κ=0.923).

Impact: UTE now rivals the ‘gold standard’ chest CT scan in the detection rate of pulmonary nodules and the ability to clearly display their morphological characteristics; it also shows a high degree of consistency in the Lung-RADS grading assessment.

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