MR Urography Protocol

The most common MR urographic techniques for displaying the urinary tract can be divided into two categories: static-fluid MR urography and excretory MR urography.

In static fluid MR urography the urography is done  by SSFSE heavy T2  Coronal and in excretery mr urography it is done by IV fluid excretion.

Without Contrast Sequences

• Localizer -Abdomen & Pelvis
• Coronal SSFSE -Abdomen & Pelvis
• Axial GREDIENT T1 -Abdomen & Pelvis
• Axial T2 Fat Sat-Respiratory Triggered-Abdomen & Pelvis
• Axial 3D GRADIENT Fat Sat

POST DIURETIC-PRE Contrast sequences

Now we have to admin Diuretic and acquire the sequence

•  Ureters and Bladder Thick slab MR Urographic coronal 

Post contrast seuences

• 3D Fat Sat GRADIENT Dynamic Axial (pre contrast-during the time of contrast-20 sec and 45 sec acquisitions)
• Pelvis 3D Fat Sat GRADIENT Axial(must be perform after the dynamic-ie,before the IV contrast reaches the bladder)
• 3D Fat Sat GRADIENT Axial-Abdomen & Pelvis (Excretory phase)
• 3D Fat Sat GRADIENT Coronal-abdomen & Pelvis (Excretory phase)

Patient Preparation

• Let the patient void prior to the scan
• If possible give 200 ml normal saline IV at the start of imaging
• If possible give oral negative contrast agents to reduce the bowel contents interpretation in the imaging.

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MR Urography Techniques