CT Scan of Pns Axial & Coronals

CT SCAN OF PERIPHERAL VENOGRAM (also called CT venography or CTV leg veins) is the gold-standard imaging test for seeing inside deep and superficial veins of the lower limbs. The scan is quick, painless, and requires no overnight stay.

CT venography is a specialised X-ray exam where iodine-based contrast dye is injected into a vein on the back of your hand. Within seconds, the CT scanner captures 360° images of your peripheral veins. A computer then rebuilds the pictures into a 3-D map that shows:

• Blood flow direction
• Narrowing or blockage
• Valve function
• Clot size and age

Radiologists at Cadabams check:

• Vein diameter (normal 4–12 mm)
• Contrast filling defects (clot)
• Collateral vessel formation
• Compression by surrounding muscles (May-Thurner)
• Venous reflux time

• Confirm or rule out DVT
• Plan laser or radio-frequency ablation for varicose veins
• Evaluate congenital venous malformations
• Monitor stent or filter position
• Identify source of recurrent pulmonary embolism

Your doctor may order a CT SCAN OF PERIPHERAL VENOGRAM if you have:

• Swollen, painful, or discoloured leg
• Family history of deep vein thrombosis (DVT)
• Varicose veins that ache or bleed
• Leg ulcers that refuse to heal
• Previous clot and new symptoms
• Planned vascular surgery or stent placement

• Speed: 15-minute scan, 2-hour report
• Accuracy: 97 % sensitivity for DVT
• Comfort: No catheter inside the vein
• Safety: 70 % dose-reduction software
• Convenience: Online report access and free physician tele-cons

• Deep vein thrombosis
• Superficial thrombophlebitis
• Chronic venous insufficiency
• Pelvic vein compression (May-Thurner syndrome)
• Venous ulcers
• Arteriovenous fistula
• Tumour invasion into veins

24 hours before

• Drink 2 L water to hydrate kidneys
• Pause metformin if eGFR < 45 (doctor will advise) Day of scan
• Wear loose clothing; remove metal jewellery
• Eat light breakfast; fasting not mandatory
• Bring prior ultrasound or MRI reports for comparison

• Recent serum creatinine (within 30 days)
• Valid doctor’s prescription stating “CT SCAN OF PERIPHERAL VENOGRAM”
• Signed consent form (available online or at centre)

Morning appointments (8 am–12 pm) are ideal because:

• Lower foot swelling after overnight rest
• Faster contrast clearance in well-hydrated patients
• Same-day reporting before 5 pm

Age: 14–90 years Weight: Up to 200 kg GFR: ≥ 30 mL/min (or dialysis plan discussed with nephrologist) Pregnancy: Deferred to post-delivery or alternative ultrasound offered

1. Check-in at Cadabams Diagnostics reception
2. IV cannula insertion on dorsum of hand
3. Lie on CT table, feet first
4. Contrast injection (warm sensation for 10 s)
5. 8-second scan while you hold still
6. Post-scan observation for 10 min
7. Collect printed report and CD within 2 hours

• Inform staff about prior iodine allergy—we pre-medicate with steroids if needed
• Diabetic patients on metformin: stop 48 h post-contrast and resume after kidney function recheck
• Wear comfortable cotton clothes; avoid saree or tight jeans
• Bring an attendant if you have mobility issues

Risks (rare, <1 %)

• Mild contrast allergy (itching, rash)
• Kidney strain in pre-existing renal disease
• Bruising at injection site Limitations
• Claustrophobia is uncommon; our wide-bore scanner fits bariatric patients up to 200 kg
• Pregnancy is a relative contraindication—tell us if you are or could be pregnant