Contrast-Enhanced Renal Ultrasound for Kidney Lesion Characterization
This targeted renal ultrasound exam uses intravenous microbubble contrast agents to amplify visualization of blood flow patterns within kidney tissue, allowing radiologists to differentiate between benign and malignant renal lesions without exposure to ionizing radiation. It is specifically used to characterize suspicious renal masses detected on prior non-contrast imaging, assign Bosniak classification grades to cystic kidney lesions, and assess vascularity of urogenital system abnormalities including renal cell carcinoma and complex renal cysts.
This contrast-enhanced renal ultrasound uses intravenous microbubble agents to evaluate and characterize suspicious kidney lesions and urogenital system abnormalities without ionizing radiation exposure.
Key facts at a glance
- Modality
- us
- Body part
- abdomen · renal
- Contrast
- microbubble
- Contrast route
- iv
- Ionizing radiation
- false
- Radiation dose
- 0
- Duration (min)
- 30
- Preparation
- fasting-6h
- Pregnancy safe
- true
- Pediatric safe
- true
- Breastfeeding safe
- true
- Claustrophobia risk
- none
- Metal implant safe
- safe
- Sedation
- none
- Result turnaround
- 24-48h
- Availability
- routine
- Setting
- any
- Cost tier
- moderate
Understanding Ultrasound of kidneys
Ultrasound Imaging provides detailed visualization of kidneys. Contrast material highlights vascular structures and improves tissue differentiation. This non-invasive technique uses safe technology to capture real-time images.
Clinical Indications
This diagnostic examination detects abnormalities, guides treatment decisions, and monitors known conditions.
What to Expect
The procedure typically takes 30 minutes. You may experience a brief warm sensation as contrast is administered. The examination is painless and non-invasive.
How to read the report
- Results reviewed by board-certified radiologist.
- Report transmitted to referring physician.
What Is This Procedure?
This ultrasound evaluates renal, specifically kidneys. Uses contrast dye to enhance visualization of internal structures. No radiation exposure.
What Does It Show?
Detailed images of kidneys. Part of the urogenital system.
Common Uses
This exam is commonly used to detect abnormalities, guide treatments, and monitor known conditions.
What to Expect
The procedure takes approximately 30 minutes. You may feel a warm sensation if contrast is used.
Severe pain at procedure site
urgentWorsening severe pain with fever or other symptoms. Go to urgent care or ER.
Mild symptoms after procedure
promptMild discomfort or symptoms that don't improve. Contact your doctor.
Severe allergic reaction (anaphylaxis)
emergencyDifficulty breathing, swelling, rapid heartbeat after contrast. Call 911 immediately.
Call 911 immediately
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 9, 2026. · Read our editorial policy