Magnetic resonance (MR) urography has become an integral part of the recently emerging advances that involve clinical uroradiology. MR urography has received a relatively lower attention than multidetector CT (MDCT) urography, being hampered by the low spatial resolution which is crucial for calyceal evaluation and by the requirement of updated MR units. However, excellent contrast resolution and lack of ionizing radiation make MR urography a technique to be considered for noninvasively evaluating the entire urinary tract, especially when ionizing radiation is to be avoided, such as in pediatric or pregnant patients.
