Renal Scan
Nuclear medicine renogram for perfusion and drainage.
What is Renal?
Nuclear medicine renogram for perfusion and drainage assessment using radiolabeled tracers.
How it works: A radioactive tracer is injected and tracked through the kidneys; gamma cameras capture images to evaluate blood flow and urine excretion patterns.
Common Uses of Renal
Renal obstruction detection
Identify functional obstruction with diuretic stimulation.
Hypertension workup
Evaluate renovascular hypertension using captopril stimulation.
Transplant evaluation
Assess graft function and drainage in transplant recipients.
Advantages
- ✓Non-invasive functional assessment
- ✓Split kidney function analysis
- ✓Dynamic evaluation of renal physiology
- ✓No contrast nephrotoxicity
- ✓Cost-effective functional imaging
Limitations
- ⚠Limited anatomical detail
- ⚠Requires patient cooperation
- ⚠Radiation exposure
- ⚠Technical artifacts possible
- ⚠Interpretation complexity
Preparation Checklist
0 of 3 completed
⚖️Renal vs CT
Related Imaging Modalities
CT urography provides detailed anatomy; MRI offers excellent soft tissue contrast without radiation; ultrasound is real-time and portable; DMSA provides cortical static imaging.
CT
CT scans use X-rays to create detailed cross-sectional images of the body. They are particularly useful for detecting bone fractures, tumors, and internal bleeding.
MRI
MRI uses powerful magnets and radio waves to produce detailed images of organs and soft tissues. Excellent for brain, spine, and joint imaging.
Ultrasound
Ultrasound uses sound waves to create real-time images. Commonly used for pregnancy monitoring and examining organs like the heart, liver, and kidneys.
Browse Renal Terms
Explore common terms in Renal reports, each with detailed explanations, clinical significance, and related lab tests to help you understand your imaging results. lab tests.
Obstructive Uropathy Scan: What It Shows, Cost & Preparation
Delayed tracer transit from renal pelvis to ureter and bladder. Dilated collecting system with cortical retention. Persistent pelvic activity with delayed or absent bladder visualization. Diuretic (lasix) response shows impaired washout.
Renal Artery Stenosis Scan: What It Shows, Cost & Preparatio
Decreased tracer uptake and delayed peak activity in the affected kidney. Delayed washout with persistent parenchymal activity after ACE inhibitor. Differential function shows decreased contribution from stenotic kidney. Normal kidney shows preserved uptake and washout.
Renal Function Scan: What It Shows, Cost & Preparation
Radiotracer uptake and excretion patterns reflecting glomerular filtration and tubular function. Quantitative measures include differential renal function, GFR estimation, and excretion curves. Normal kidneys show prompt uptake and excretion.
Renovascular Hypertension Renal Scan (Captopril Renography):
Renal Transplant Scan: What It Shows, Cost & Preparation
Pediatric Hydronephrosis Renal Scan: What It Shows, Cost & P
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