Abstract
To evaluate the diagnostic value of intravoxel incoherent motion (IVIM) diffusion-weighted (DWI) magnetic resonance imaging (MRI) and semi-quantitative dynamic contrast-enhanced MRI (DCE-MRI) to help diagnose indeterminate solitary pulmonary lesions (SPLs) and the subgroups of lung cancer (LC), and to explore the relationship between IVIM and DCE-MRI. Sixty-four consecutive patients (44 male, 20 female; age, 52.77±10.46 years) from February 2014 to September 2016 with SPLs, were involved in this prospective study. Total apparent diffusion coefficient (ADCtotal), tissue diffusivity (D), pseudo-diffusion coefficient (D*), perfusion fraction (F), maximum enhancement ratio (MER), Tmax, slope, and washout were compared between the lung cancer (LC) and benign group and among the subtypes of LC. Time-intensity curves (TICs) were drawn. Receiver operating characteristic (ROC) curves were constructed to estimate the diagnostic performance. The correlation of both tools was assessed. ADCtotal, D, and Tmax were significantly higher for benignity than for LC (p=0.005, p=0.002 and p<0.001 respectively). D* and slope were significantly higher in LC than benignity (p=0.005 and p=0.011, respectively). D and Tmax had the highest sensitivity and...Continue Reading
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