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CT-guided biopsy

A CT-guided biopsy is a ct test of the variable. It shows takes a tissue sample from a lump using CT to guide the needle. Typical effective dose 2 to 10 mSv, similar to about 8 months to 3 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.

What it shows

Takes a tissue sample from a lump using CT to guide the needle.

Why it is done

Diagnose a lung, liver or bone lesion.

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 2 to 10 mSv, similar to about 8 months to 3 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

30 to 60 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.

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 guided biopsy show?
Takes a tissue sample from a lump using CT to guide the needle.

Why is a ct guided biopsy done?
Diagnose a lung, liver or bone lesion.

How do I prepare for a ct guided biopsy?
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 guided biopsy use radiation?
Typical effective dose 2 to 10 mSv, similar to about 8 months to 3 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 guided biopsy take?
30 to 60 minutes

Why is CT-guided biopsy done?
Diagnose a lung, liver or bone lesion.

How do I prepare for CT-guided biopsy?
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-guided biopsy safe in pregnancy?
Typical effective dose 2 to 10 mSv, similar to about 8 months to 3 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