The use of intravoxel incoherent motion (IVIM) and diffusion-weighted imaging (DWI) has increased for renal function and fibrosis assessments. However, debates have continued about which method is best. In this study, we used IVIM to assess the pathologic injury associated with IgA nephropathy and compared the results with the mono-exponential model of DWI. Both diffusion models were derived from advanced zoomed field of view (FOV) DWI acquisitions. IVIM had better diagnostic performance than the mono-exponential model in assessing the renal pathologic injury in patients with IgA nephropathy.
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