Ultrasound-based imaging methods of the kidney-recent developments

Area of Science:

• Medical imaging
• Nephrology
• Diagnostic ultrasound

Background:

• Chronic kidney disease (CKD) incidence is rising, necessitating noninvasive diagnostic tools.
• Traditional methods for assessing renal fibrosis and microvascularization have limitations.
• Ultrasound (US) technology has advanced, offering new diagnostic capabilities for kidney disease.

Purpose of the Study:

• To review novel ultrasound-based techniques for kidney diagnostic imaging.
• To explore the potential of renal elastography, ultrasensitive Doppler, and contrast-enhanced ultrasonography in diagnosing kidney conditions.
• To highlight challenges and future directions for these emerging US technologies in nephrology.

Main Methods:

• Review of recent advancements in ultrasound elastography for tissue stiffness assessment.
• Discussion of ultrasensitive Doppler techniques for detecting slow renal blood flow.
• Analysis of contrast-enhanced ultrasonography (CEUS) for renal microvascularization and perfusion assessment.

Main Results:

• Renal elastography shows promise for noninvasive fibrosis diagnosis but requires optimization and validation.
• Ultrasensitive Doppler techniques enhance detection of slow blood flow, with or without US contrast agents.
• CEUS improves characterization of renal masses and vascular disorders, and aids in monitoring tumor vascular changes and drug response.

Conclusions:

• Novel US techniques, including elastography and enhanced Doppler, represent significant advancements in kidney diagnostics.
• These methods offer potential for noninvasive assessment of renal fibrosis and microvascular function.
• Further validation and standardization are needed for widespread clinical adoption in managing kidney diseases.