J Korean Soc Ultrasound Med.  2011 Mar;30(1):29-35.

The Correlation Between the GFR and the Renal Dimensions in Glomerulopathy Patients: Comparison of 2D and 3D Ultrasound

Affiliations
  • 1Department of Radiology, Seoul National University Hospital, Korea.
  • 2Department of Radiology, Seoul National University College of Medicine Seoul National University Bundang Hospital, Institute of Radiation Medicine, Seoul National University Medical Research Center, Clinical Research Institute, Seoul National University H
  • 3Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Korea.

Abstract

PURPOSE
We wanted to determine the correlation between the renal length as measured on two dimensional (2D) ultrasonography (US) and the renal parenchymal volume as measured with a new three-dimensional (3D) volume probe ultrasound system. We also wanted to determine the correlation between the renal length or renal parenchymal volume and the glomerular filtration rate (GFR) in patients with glomerulopathy.
MATERIALS AND METHODS
From July 2007 to December 2007, 26 patients who were pathologically confirmed to have glomerulopathy by biopsy were enrolled. Renal length was measured with 2D US and the renal parenchymal volume was measured with 3D US just prior to biopsy. The GFR was obtained from the electronic medical records. Pearson's correlation coefficients were used to analyze the correlation between the renal length and the renal parenchymal volume, the correlation between the renal length and the GFR and the correlation between the renal parenchymal volume and the GFR.
RESULTS
The renal length and the renal parenchymal volume showed strong positive correlation (r = 0.850, p = 0.0001). The correlation coefficient between the renal length and the GFR was 0.623 (p = 0.0007) and the correlation coefficient between the renal volume and the GFR was 0.590 (p = 0.0015). Both the renal length and renal parenchymal volume showed apparently positive correlations with the GFR in glomerulopathy patients.
CONCLUSION
The renal length showed strong positive correlations with the renal parenchymal volume. Both the renal length and the renal parenchymal volume showed apparently positive correlations with the GFR in glomerulopathy patients. In glomerulopathy patients, the renal dimensions measured by ultrasound can reflect the status of the GFR, and the measurement of the 2D renal length could be sufficient for follow up. Further studies are needed to evaluate the role of 3D US for assessing patients with renal disease.

Keyword

Ultrasonography; Glomerular filtration rate; Glomerulopathy; Kidney

MeSH Terms

Biopsy
Electronic Health Records
Follow-Up Studies
Glomerular Filtration Rate
Humans
Kidney
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