Assessment of renal impairment by non-contrast-enhanced conventional magnetic resonance imaging: comparison with Tc-99m-DTPA renography

作者：Hidaka Fumitaka^*; Amano Yasuo; Takahama Katsuya; Takagi Ryo; Murakami Ryusuke; Onozawa Shiro; Kumita Shinichiro

来源：Japanese Journal of Radiology, 2011, 29(6): 378-385.

DOI：10.1007/s11604-011-0567-9

• Renal impairment
• Corticomedullary differentiation
• Cortical irregularity
• Renal volume
• Renography

The aim of this study was to determine whether non-contrast-enhanced magnetic resonance imaging (MRI) can detect three levels of renal impairment by evaluating the differences and agreement with Tc-99m-diethylenetriamine pentaacetic acid (DTPA) renography.
A total of 28 patients with kidney disease were enrolled in the study. MRI findings, including visual corticomedullary differentiation (CMD) on T1- and T2-weighted imaging (T1WI, T2WI), cortical irregularity, the number of renal cysts, and the volume of the kidney, were evaluated for individual kidneys and pairs of kidneys. The differences and agreement between MRI findings and the three levels of renal impairment based on the glomerular filtration rate (GFR) measured using Tc-99m-DTPA renography were analyzed.
All MRI findings except the number of renal cysts in pairs of kidneys were consistent with the patient's classification. The agreement between the patient's classifi cations based on GFR and that based on the visual CMD on T1WI and T2WI was almost perfect or substantial in both individual kidneys and pairs of kidneys.
Non-contrast-enhanced MRI was capable of distinguishing three levels of renal function, including serious renal impairment.

• 出版日期2011-7