Fig. 1From: Water-enhanced antegrade MR pyelography in pregnancy: a novel radiation-free approachCoronal HASTE images of the abdomen and pelvis in a 31-year-old pregnant woman at 22 weeks’ gestation. Serial images demonstrate blooming artefact due to a nephrostomy in the right renal pelvis (a, c), and gradual tapering of the right ureter towards the level of the gravid uterus at the pelvic brim (b, c, arrow). Transient filling defects in the mid ureter (c, arrowhead) represent gas bubblesBack to article page