Fig. 1From: Restricted diffusion MRI as a functional biomarker for the assessment of acute calcular upper urinary tract obstruction: initial experienceExample of normal appearance of both kidneys on the diffusion-weighted image. Normal kidneys with high b value = 800 (a), both kidneys are of low signal intensity compared with spleen as a reference. ADC map (b), both kidneys exhibit high signals when compared with the spleen, which showing low signal compared with high b value imageBack to article page