What is a CT-Guided Biopsy?
A CT-guided biopsy is a safe, minimally invasive procedure that uses a CT scan to guide a small needle into a specific area of the body. It helps doctors collect a tissue sample to diagnose or rule out diseases — without needing open surgery.This biopsy is usually done when there's a lump, tumour, or abnormal spot that needs closer examination.
Why is it done?
- To check if a lump is cancerous or benign
- To diagnose infections or inflammation
- To plan proper treatment based on accurate results
How to Prepare
To keep you safe and ensure the best results, here’s what you need to know before your appointment:
The day before:
- Fasting: Don’t eat or drink anything except water for at least 6 hours before the scan. If your appointment is in the morning, stop eating from midnight.
- Medicines: Avoid aspirin, ibuprofen, and vitamin E for 3–7 days before the procedure. Talk to your doctor about any medications you are on.
What to bring:
- Your recent medical records and prescriptions
- Any reports about diabetes or blood-related conditions
- A serum creatinine report (not older than 4 weeks) – this is to check kidney function if a contrast dye is used
What to wear:
- Loose, comfortable clothing
- No jewellery, metal clips, or accessories
For women:
- Let your doctor know if you are pregnant or breastfeeding
- If you’re breastfeeding and a contrast dye is used, pump and store milk in advance. Avoid breastfeeding for 24 to 48 hours after the scan
Bring a companion:
Please come with one family member or friend to support you during the visit
How Long Does it Take?
The entire visit can take around 4 to 5 hours. Here's a rough timeline:
| Step | Time |
|---|---|
| Patient history & consent | 5–10 mins |
| Medicine preparation | 10–15 mins |
| Waiting time (if contrast is used) | 45–60 mins |
| Scan and biopsy on table | 15–20 mins |
| Post-scan observation | 5–10 mins |
What Happens During the Procedure?
Changing and prep:
You’ll change into a gown and remove any metal items. If contrast dye is needed, it will be given through an injection or by mouth.
Waiting (if oral contrast is given):
You may need to wait about an hour for the dye to circulate.
In the scan room:
You’ll lie on a flat table that moves into a CT scanner (a doughnut-shaped machine). The technician will guide you from another room and stay in constant contact through an intercom.
During the scan:
The CT machine takes detailed images of your body. You’ll need to stay very still and may be asked to hold your breath briefly.
Biopsy:
Using the CT images, the doctor will gently insert a fine needle into the exact spot and collect a small tissue sample. This part is carefully guided and usually causes only mild discomfort.
After the scan:
You’ll be monitored for a short while to ensure you feel fine, especially if contrast dye was used.
After the Biopsy
You may feel a little sore at the biopsy site for a day or two. Rest is recommended for the same day. Your doctor will explain when you can resume normal activities.
When Will I Get the Results?
The tissue sample is studied by a pathologist. Your doctor will share the results and next steps with you, usually within a few days.
Need to Ask Something?
Our team at Mumbai Diagnostic Centre is here to help. Feel free to ask us anything — before, during, or after your visit.