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[Renal failure: diagnostic work-up].

J Ifergan¹, L Rocher, O Hélénon

¹Service d'Imagerie, Université Paris Sud, CHU Bicêtre AP-HP, 78 Avenue du Gal-Leclerc, 95275 Le Kremlin-Bicêtre, France. jonathan.ifergan@bct.aphp.fr

Journal De Radiologie

|May 10, 2011

Summary

This summary is machine-generated.

This review covers imaging for renal failure, focusing on identifying curable causes like obstruction. Renal ultrasound with Doppler is key, while CT and MRI offer complementary diagnostic value for kidney conditions.

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Area of Science:

Radiology and Medical Imaging
Nephrology
Urology

Background:

Renal failure, whether acute or chronic, necessitates a thorough diagnostic evaluation to identify potentially curable etiologies.
Radiologists play a crucial role in excluding treatable causes of renal dysfunction, such as urinary tract obstruction or vascular thrombosis.

Observation:

Renal ultrasound with Doppler imaging is the primary imaging modality for assessing renal failure, aiding in the evaluation of renal perfusion, especially with contrast agents.
Non-contrast computed tomography (CT) is valuable for diagnosing specific urinary tract pathologies.
Magnetic resonance imaging (MRI) offers comprehensive urinary tract evaluation but is typically a second-line modality due to practical considerations and the risk of nephrogenic systemic fibrosis from gadolinium-based contrast agents.

Findings:

The diagnostic work-up for renal failure involves a stepwise approach utilizing various imaging techniques.
Ultrasound with Doppler is the initial modality of choice for evaluating renal perfusion and identifying obstruction.
CT and MRI provide complementary information for specific diagnoses, with MRI being the most comprehensive but carrying risks.

Implications:

Accurate and timely diagnosis through appropriate imaging is essential for managing renal failure and preventing irreversible kidney damage.
Understanding the strengths and limitations of each imaging modality (ultrasound, CT, MRI) optimizes patient care.
Minimizing risks associated with contrast agents, such as nephrogenic systemic fibrosis, is a critical consideration in the diagnostic process.