DigiNepal Health ENनेहि

← Health · Imaging

CT urography

A CT urography is a ct test of the urinary tract. It shows kidneys, ureters and bladder with contrast. Typical effective dose 10 to 15 mSv, similar to about 3 to 5 years of natural background radiation (about 3 mSv a year).

General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.

SmartAnswer by DigiNepal SI

CT urography is a medical imaging test that examines the kidneys, ureters, and bladder using a contrast agent. It provides detailed images of these organs with the help of a CT scanner. The typical effective dose of radiation is 10 to 15 mSv, which is similar to about 3 to 5 years of natural background radiation (about 3 mSv per year). This test is often performed to diagnose blood in the urine. Before the procedure, you should remove any metal objects and fast for a few hours if contrast is used. The test is generally safe, but you should inform the staff if you are pregnant, have allergies, or have kidney, diabetes, or other medical conditions. It typically takes 15 to 30 minutes to complete. The results should be interpreted by a qualified health professional.

Sources: SI health summary (own words); decoder imaging pack; RadiologyInfo.org and MedlinePlus as references only

What it shows

Kidneys, ureters and bladder with contrast.

Why it is done

Blood in the urine.

Preparation

Remove metal objects. If contrast is used you may need to fast for a few hours; tell staff about allergies, kidney disease, diabetes medicines (metformin) or pregnancy.

Radiation & safety

Typical effective dose 10 to 15 mSv, similar to about 3 to 5 years of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.

How long it takes

15 to 30 minutes. General information, not a diagnosis. Results must be interpreted by a qualified health worker.

Sample type

CT

Consult a doctor to interpret results — a single test does not make a diagnosis.

Related conditions

entry-health-condition-ckd

Where to get this near you

Care near you

Uses your location once to list the nearest facilities. Nothing is stored.

Common questions

What does a ct urogram show?
Kidneys, ureters and bladder with contrast.

Why is a ct urogram done?
Blood in the urine.

How do I prepare for a ct urogram?
Remove metal objects. If contrast is used you may need to fast for a few hours; tell staff about allergies, kidney disease, diabetes medicines (metformin) or pregnancy.

Does a ct urogram use radiation?
Typical effective dose 10 to 15 mSv, similar to about 3 to 5 years of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.

How long does a ct urogram take?
15 to 30 minutes

Why is CT urography done?
Blood in the urine.

How do I prepare for CT urography?
Remove metal objects. If contrast is used you may need to fast for a few hours; tell staff about allergies, kidney disease, diabetes medicines (metformin) or pregnancy.

Is CT urography safe in pregnancy?
Typical effective dose 10 to 15 mSv, similar to about 3 to 5 years of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.

SI text CC BY 4.0; RadiologyInfo.org (ACR/RSNA) and MedlinePlus linked as references only, no text copied.

Sources: SI health summary (own words); decoder imaging pack; RadiologyInfo.org and MedlinePlus as references only

Emergency — call102