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Evaluation of glomerular function in individual kidneys using dynamic magnetic resonance imaging
Y Fukuda1, H Watanabe, T Tomita
1Department of Pediatrics, Juntendo University School of Medicine, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113, Japan.
Pediatric Radiology
|January 1, 1996
Summary
Dynamic magnetic resonance (MR) imaging assesses kidney function by tracking contrast agent transit. Delayed cortico-medullary junction time correlates with reduced glomerular filtration rate, offering a non-invasive evaluation method.
Area of Science:
- Nephrology
- Radiology
- Medical Imaging
Background:
- Glomerular function is crucial for kidney health.
- Assessing glomerular filtration rate (GFR) is essential for diagnosing and managing kidney disease.
- Current methods for evaluating GFR can be invasive or limited in scope.
Purpose of the Study:
- To evaluate the utility of dynamic magnetic resonance (MR) imaging in assessing glomerular function.
- To determine the correlation between MR imaging parameters and creatinine clearance (Ccr).
Main Methods:
- Utilized fast field-echo MR imaging technique.
- Administered intravenous bolus injection of a paramagnetic contrast agent.
- Analyzed time-dependent signal intensity curves in renal cortex and medulla.
- Determined cortico-medullary (C-M) junction time.
Main Results:
- Cortico-medullary junction time was delayed with decreased glomerular function.
- Mean C-M junction time showed a significant inverse correlation with total creatinine clearance (Ccr).
- Individual kidney C-M junction time also inversely correlated with individual kidney Ccr.
Conclusions:
- Dynamic MR imaging is a valuable tool for evaluating renal morphology.
- Dynamic MR imaging can semiquantitatively assess glomerular function, both individually and collectively.
- This technique offers an approach analogous to radionuclide scintigraphy for kidney evaluation.