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Bidimensional shear-wave elastography effectively assesses kidney health. Lower kidney shear-wave velocity (KSWV) in patients indicates chronic kidney disease (CKD), enabling prediction with high accuracy.

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Area of Science:

  • Nephrology
  • Medical Imaging
  • Biophysics

Background:

  • Chronic kidney disease (CKD) affects millions globally, necessitating improved diagnostic tools.
  • Current CKD assessment methods can be invasive or lack sensitivity in early stages.
  • Bidimensional shear-wave elastography offers a non-invasive approach to evaluate tissue stiffness.

Purpose of the Study:

  • To evaluate the diagnostic utility of bidimensional shear-wave elastography in renal assessment.
  • To determine if kidney shear-wave velocity (KSWV) can predict the presence and progression of CKD.
  • To establish a KSWV cutoff value for CKD detection.

Main Methods:

  • A cohort of 92 participants (50 healthy, 42 with CKD) underwent bidimensional shear-wave elastography.
  • Kidney shear-wave velocity (KSWV) was measured in the parenchyma of both kidneys.
  • KSWV values were compared between healthy volunteers and CKD patients.

Main Results:

  • High success rates for KSWV measurements (94% right kidney, 90.2% left kidney) with excellent reproducibility (ICC 0.96 RK, 0.91 LK).
  • Significantly lower KSWV in CKD patients (RK: 1.38 m/s, LK: 1.37 m/s) compared to healthy controls (RK: 1.78 m/s, LK: 1.72 m/s).
  • A KSWV cutoff of <1.47 m/s predicted CKD with 89.2% sensitivity and 76.9% specificity, showing a trend of decreasing KSWV with CKD progression.

Conclusions:

  • Bidimensional shear-wave elastography is a reliable method for renal assessment.
  • Decreased KSWV is indicative of CKD and can predict its presence.
  • KSWV measurement holds promise as a non-invasive biomarker for CKD detection and monitoring.