Abstract
Background Functional MR urography (fMRU) has developed into an innovative, radiation-free option
for assessing parameters of kidney function in pediatric radiology. The importance
of fMRU in comparison to the standardized established nuclear medicine procedure (99mTc-Mercapto-acetyltriglycerine,
MAG3 scintigraphy) is shown using SWOT analysis.
Methods To assess the current state of research, a selective literature search was carried
out in PubMed. Taking into account the current scientific status, the examination
technique, preparation, and evaluation of fMRU are presented.
Results As a result of the comparison with MAG3, fMRU is suitable for certain indications
and represents an optimal combination of morphological and functional representation
of the kidneys and urinary tract, especially in the case of surgical consequences.
Conclusion fMRU has been successfully established as a diagnostic method for assessing the morphology
and function of the kidneys in competition with MAG3 scintigraphy.
Key Points
-
Functional MRU allows reliable statements on the morphology and function of the kidneys
and urinary tract.
-
The results of the functional assessment of fMRU are comparable to the results of
MAG3 scintigraphy.
-
The complex implementation and demanding evaluation limits the spread of fMRU as a
complete alternative to MAG3 scintigraphy. fMRU is reserved for special indications.
-
Functional MRU has prevailed over MAG3 scintigraphy for complex renal and urinary
tract anomalies (CAKUT) that require surgical correction. An example is the clarification
of dribbling in girls, which is usually based on an ectopic opening of a ureter in
a double system.
Citation Format
Key words
functional MR urography - congenital anomalies of the kidney and urinary tract - glomerular
filtration rate - children, adolescents - kidney - renal function
