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[Contrast-enhanced ultrasonography: renal applications].
J M Correas1, M Claudon, F Tranquart
1Service de Radiologie Adulte, Groupe Hospitalier Necker-Enfants Malades, 149 rue de Sèvres 75743 Paris cedex 15, France. jean-michel.correas@nck.ap-hop
Journal De Radiologie
|January 8, 2004
Summary
Ultrasound contrast agents (USCA) enhance urinary tract imaging by improving detection of small lesions and low blood flow. This allows for new functional applications in renal blood flow quantification and diagnosis of vascular disorders.
Area of Science:
- Radiology
- Medical Imaging
- Nephrology
Background:
- Color Doppler Ultrasound (US) faces limitations in detecting small urinary tract lesions and low blood flow.
- Ultrasound contrast agents (USCA) offer a solution to these limitations.
Purpose of the Study:
- To explore the role of USCA in improving renal blood flow quantification and diagnosing urinary tract abnormalities.
- To highlight new functional applications of contrast-enhanced ultrasonography.
Main Methods:
- Utilizing microbubbles from USCA to enhance acoustic response.
- Developing advanced pulse sequencing and signal processing for specific ultrasound sequences.
- Investigating the non-linear response of USCA for improved detection.
Main Results:
- USCA significantly improve the detection of abnormal renal micro and macrovascular disorders.
- The technique shows potential in characterizing renal artery stenosis, renal infarction, and atypical cystic renal masses.
- Promising results for detecting reflux and testicular torsion.
Conclusions:
- Contrast-enhanced ultrasonography with USCA overcomes limitations of conventional Doppler US for urinary tract imaging.
- USCA enable advanced functional assessments of renal vasculature and diagnosis of various kidney conditions.
- Further validation of clinical indications for contrast-enhanced ultrasonography is ongoing.