CT CONTRAST

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Lab Test
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NABH Accredited

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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

  1. Check-in at front desk with ID and prescription
  2. Consent form and allergy review with technologist
  3. IV line inserted for contrast; oral contrast given for abdominal scans
  4. Positioning on scanner bed; remain still and hold breath as instructed
  5. Scanning takes 5–10 minutes; staff monitors you throughout
  6. Observation for 15 minutes post-scan for any reactions
  7. 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 / ObservationDescription General Interpretation / Significance
Normal scan No abnormalities detected; vessels patent, organs symmetricalIndicates 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 DefectA 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

  1. CECT Abdomen – evaluates liver, kidneys, pancreas
  2. CT Angiography – maps blood vessels for clots or aneurysms
  3. CT Chest with Contrast – detects lung nodules, infections
  4. CT Brain with Contrast – identifies tumours, stroke, bleeding
  5. 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.

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