CT TRIPHASIC ABDOMEN

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About The Test

A CT TRIIPHASIC ABDOMEN is an advanced three-phase computed-tomography study that captures images of your abdominal organs at different times after an IV contrast injection. At Cadabams Diagnostics, we combine cutting-edge 128-slice CT scanners with experienced radiologists to deliver sharp, motion-free images in under 15 minutes. Whether you need to rule out liver lesions or evaluate kidney function, our streamlined process ensures comfort, clarity, and speed.

What is a Triphasic CT Scan Abdomen?

  • Definition: A scan taken in three distinct phases—arterial, venous, and delayed—to trace how contrast flows through blood vessels and organs.
  • Technology: Uses low-dose radiation protocols and iterative reconstruction to reduce exposure while preserving image quality.
  • Difference: Unlike a routine single-phase CT, the triphasic approach highlights subtle abnormalities in liver, pancreas, kidneys, and major vessels.

When and Who Needs to Take a Triphasic CT Scan Abdomen?

  • Symptoms prompting the scan
    • Unexplained abdominal pain
    • Jaundice or abnormal liver-function tests
    • Blood in urine or rising creatinine
  • High-risk groups
  • Chronic hepatitis or cirrhosis patients
  • Individuals with a family history of renal or hepatic tumors
  • Post-cancer follow-up cases needing precise staging

List of Parameters

  • Timing intervals: 25 s (arterial), 60 s (venous), 180 s (delayed).
  • Slice thickness: 0.625 mm for isotropic reconstruction.
  • Contrast volume: 1.5 ml/kg up to 120 ml, non-ionic iodinated.
  • Kilovoltage: 100–120 kVp auto-modulated.
  • Hounsfield Unit (HU) thresholds for lesion characterization.

Why This Test

  • Characterize indeterminate lesions found on ultrasound.
  • Plan surgical or interventional procedures with 3D road-mapping.
  • Monitor post-treatment response (TACE, RFA, chemotherapy).
  • Detect occult sources of GI bleeding.

When to Take Test

Benefits

Benefits of Taking the Test

  • High accuracy: >90 % sensitivity for hepatocellular carcinoma detection.
  • Single-session imaging: Avoids multiple scans, saving time and money.
  • Early detection: Identifies tumors when still resectable.
  • Digital sharing: Instant cloud reports for tele-consults.

Illnesses Diagnosed with CT Triphasic Abdomen

  • Liver: Hepatoma, hemangioma, metastasis, fatty infiltration.
  • Kidneys: Renal-cell carcinoma, angiomyolipoma, pyelonephritis.
  • Pancreas: Adenocarcinoma, neuroendocrine tumors, pseudocysts.
  • Vascular: Portal-vein thrombosis, aneurysms, arteriovenous malformations.

Preparing for test

  • Fasting: 4–6 hours nil-by-mouth; clear fluids allowed.
  • Hydration: Drink 500 ml water the night before to protect kidneys.
  • Allergies: Inform staff about iodine, shellfish, or prior contrast reactions.
  • Medications: Continue most drugs; hold metformin 48 h post-scan if eGFR <30.
  • Clothing: Wear metal-free attire; lockers provided for valuables.

Pre-requisites

  • Recent serum creatinine (<4 weeks old).
  • Diabetic profile if on metformin.
  • Pregnancy test for women of child-bearing age.
  • Signed consent after risk counseling.

Best Time to Take the Triphasic CT Scan Abdomen

  • Morning slots preferred for diabetic patients to shorten fasting time.
  • Avoid booking during active menstruation if pelvic extension is required.
  • Emergency cases accepted 24×7 at Cadabams Diagnostics.

Eligibility

  • Adults and children >15 kg.
  • eGFR >30 ml/min/1.73 m² (lower values need nephrologist clearance).
  • Not advisable in pregnancy unless life-saving; lactating mothers can resume feeding after 24 h.

Procedure for Taking a Triphasic CT Scan Abdomen

  1. Check-in: Present prescription & ID at front desk.
  2. Assessment: Nurse checks vitals, inserts IV cannula.
  3. Positioning: Lie supine on CT couch; automatic voice commands guide breathing.
  4. Contrast: Warmed Omnipaque 350 mg/ml infused via power injector at 4 ml/s.
  5. Scanning: Three short breath-holds (~5 s each) capture the phases.
  6. Observation: Monitored for 15 min post-scan for delayed reactions.

Caution Before Taking the Test

  • Asthma or severe allergy: Premedication with steroids may be arranged.
  • Claustrophobia: Open-bore CT minimizes anxiety; mild sedation on request.
  • Kidney disease: Hydration protocol and nephro-protection discussed beforehan

Test Results

Results and Interpretations

Finding / ObservationDescription General Interpretation / Significance
Normal scanNo abnormalities detected Healthy status; no further immediate action required
Benign lesions Simple cysts, hemangiomas, or fatty infiltration visible Typically requires routine follow-up with no urgent intervention
Indeterminate lesions Unusual densities or shadows needing more characterization Possible pathology; MRI or biopsy recommended for confirmation
Malignant features Masses with malignant enhancement patternsIndicates possible cancer; multidisciplinary team (MDT) review urgent within 48 hours

Risks & Limitations

  • Contrast reactions (rare): Mild nausea to severe allergy—our staff is ACLS-trained to handle emergencies.
  • Radiation exposure: Equivalent to ~6 months of natural background; we use dose-tracking software to keep ALARA.
  • Limitations:
  • Poor images in patients with significant obesity or metallic implants
  • Cannot fully characterize lesions <5 mm without follow-up MRI

Types of Triphasic CT Scan Abdomen

  1. Liver Triphasic CT – Focus on hepatic masses & vascular anatomy.
  2. Renal Triphasic CT – Evaluate kidney tumors, stones, and perfusion.
  3. Pancreatic Triphasic CT – Detect islet-cell tumors or pancreatitis complications.
  4. Whole-abdomen Triphasic CT – Comprehensive screening in trauma or cancer staging.

FAQs

Is the radiation dose safe?


Yes. Our scanners use iterative reconstruction to keep exposure as low as reasonably achievable.

Can I drive after the scan?

Absolutely. No sedation is used unless specifically requested.

What if my creatinine is borderline?

We use the CKD-EPI equation; borderline cases receive prophylactic hydration and nephrologist review.

How soon can I eat?

Immediately after the observation period; light snacks are provided at the center.

What is the difference between this and a regular CT abdomen?

A regular or standard CT abdomen, often done with a single phase of contrast, provides excellent structural detail. However, a CT Triphasic Abdomen involves precisely timed imaging during three distinct phases of blood flow. This provides much more functional information about the blood supply to organs and lesions, making it superior for characterizing tumors, especially in the liver and pancreas.

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