CT CONTRAST
Also Known As
Lab Test
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6hrs
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About The Test
A CT CONTRAST scan is a painless, advanced imaging test that uses X-rays and a special dye to create crystal-clear pictures of your organs and blood vessels. At Cadabams Diagnostics, we combine cutting-edge 128-slice CT scanners with compassionate care, ensuring every patient feels supported from booking to results.
What is CT Scan with Contrast?
A CT scan with contrast—also called a contrast-enhanced CT—involves drinking or injecting an iodine-based dye before the scan. The dye highlights blood flow and tissue differences, making abnormalities easier to spot than on a standard CT scan.
- How it works: The dye absorbs X-rays differently than tissue, lighting up blood vessels, tumours, inflammation, and infections.
- Duration: 10–30 minutes, including preparation.
- Comfort: The procedure is non-invasive; you simply lie still on the scanner bed.
When and Who Needs to Take a CT Scan with Contrast?
When is it recommended?
- Unexplained pain, bleeding, or weight loss
- Suspected cancers, infections, or organ injuries
- Evaluation after an accident or stroke symptoms
Who should consider it?
- Adults and children over 2 years (with paediatric protocols)
- People with chronic illnesses such as kidney disease or hypertension (after clearance)
- Patients scheduled for surgery or biopsies needing detailed mapping
List of Parameters
- Slice thickness: 0.625 mm for high-resolution
- Contrast timing: Arterial, venous, and delayed phases
- Contrast volume: Tailored to weight and kidney function
- Reconstruction algorithms: Iterative reconstruction to reduce noise
Why This Test
- Early cancer detection
- Accurate staging before surgery
- Monitor treatment response (e.g., chemotherapy)
- Emergency triage after trauma
When to Take Test
Benefits
Benefits of taking the Test
- Pin-point accuracy in locating small tumours (<5 mm)
- Non-surgical insight into internal bleeding or blockages
- Faster diagnosis—results within 2 hours for emergency cases
- Peace of mind from clear, evidence-based imaging
Illnesses diagnosed with CT Contrast Test
- Cancers: Lung, liver, kidney, colon, lymphoma
- Vascular: Pulmonary embolism, aortic aneurysm
- Infections: Abscess, appendicitis, pyelonephritis
- Trauma: Internal bleeding, organ lacerations
Preparing for test
1. Pre-requisites
- Fasting: 4–6 hours for abdominal scans; clear fluids allowed
- Blood test: Serum creatinine within 30 days if >50 years or diabetic
- Medications: Continue most drugs; hold metformin 48 hours post-scan
2. Best Time to Take the CT Scan with Contrast
- Morning slots reduce fasting time
- Avoid Mondays for routine scans—shorter wait times mid-week
- Emergency cases: 24×7 availability at our main centre
3. Eligibility
- Adults and children over 15 kg
- eGFR ≥30 mL/min/1.73 m²
- No severe asthma or contrast allergy history (or pre-medication arranged)
Procedure for Taking a CT Scan with Contrast
- Check-in at front desk with ID and prescription
- Consent form and allergy review with technologist
- IV line inserted for contrast; oral contrast given for abdominal scans
- Positioning on scanner bed; remain still and hold breath as instructed
- Scanning takes 5–10 minutes; staff monitors you throughout
- Observation for 15 minutes post-scan for any reactions
- Same-day report emailed or collected; CD handed immediately
Caution Before Taking the Test
- Remove metal: Jewellery, zippers, hairpins
- Pregnancy test for women of child-bearing age if uncertain
- Hydration: Drink 500 mL water post-scan to flush dye
Test Results
Results and Interpretations
Finding / Observation | Description | General Interpretation / Significance |
---|---|---|
Normal scan | No abnormalities detected; vessels patent, organs symmetrical | Indicates healthy status with no visible pathology |
Mild inflammation | Slight tissue swelling or increased enhancement seen | Suggests presence of inflammation; requires clinical correlation and possible follow-up |
Abnormal mass | Unusual density or shadow with enhanced contrast uptake | Possible pathological lesion such as tumor or infection; further diagnostic tests needed |
Abnormal Results | - Masses or lesions detected | - The patient's condition is abnormal, and further testing or treatment may be required. |
Filling Defect | A space within a contrast-filled structure (like a blood vessel) where contrast is absent. | This is a classic sign of a blockage, such as a blood clot (pulmonary embolism). |
Risks & Limitations
Risk | Likelihood | How Cadabams Mitigates |
---|---|---|
Mild allergic reaction (rash, itching) | <1% | Pre-scan questionnaire to identify allergies |
Kidney stress | Rare | eGFR blood test before booking |
Radiation exposure | Low | Low-dose protocols and ALARA principle |
Important: Inform staff if you are pregnant, breastfeeding, or have previous contrast allergy. |
Types of CT Scan with Contrast
- CECT Abdomen – evaluates liver, kidneys, pancreas
- CT Angiography – maps blood vessels for clots or aneurysms
- CT Chest with Contrast – detects lung nodules, infections
- CT Brain with Contrast – identifies tumours, stroke, bleeding
- CT Urography – assesses urinary tract stones and cancers
FAQs
Is the contrast dye safe?
Yes. We use non-ionic, low-osmolar iodine contrast with a proven safety record.
Will I feel the injection?
You may feel a warm flush or metallic taste for 10–20 seconds—totally normal.
How long before I get my report?
Most reports are ready within 2 hours; complex cases within 6 hours.
Can I drive home after the scan?
Yes, unless you took sedation (rare). Otherwise, resume normal activities.
When will I get my results?
Typically, the radiologist's report will be sent to your referring physician within 24 to 48 hours. Your doctor's office will then contact you to schedule a follow-up appointment to discuss the findings. For urgent or emergency cases, results are often made available much faster.