CT PNS
Also Known As
Lab Test
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About The Test
A CT PNS (Computed Tomography of the Paranasal Sinuses) captures cross-sectional pictures of the air-filled spaces around your nose and eyes. The scan:
- Takes less than 10 minutes
- Requires no injections in most cases
- Delivers high-resolution 3D images
- Guides ENT specialists in planning surgery or medical treatment
2. What is CT PNS Procedure?
CT PNS is a specialized X-ray technique that rotates around your head, creating thin “slices” of your sinus cavities. The computer stitches these slices into a 3D map, revealing:
- Mucosal thickening
- Fluid levels
- Bony abnormalities
- Septal deviation
### How it differs from regular CT
Unlike a full-head scan, CT PNS focuses only on sinus regions, reducing both scan time and radiation dose.
3. When and Who Needs to Take a CT PNS Procedure?
Common triggers
- Recurrent sinus headaches
- Nasal obstruction lasting >4 weeks
- Suspected sinusitis unresponsive to antibiotics
- Pre-surgical evaluation for FESS (Functional Endoscopic Sinus Surgery)
Age groups
- Adults: most common
- Children: when chronic symptoms persist and simpler imaging has failed
List of Parameters
Radiologists review:
- Lund-Mackay score for mucosal disease extent
- Ostiomeatal complex patency
- Septal deviation angle
- Haller cell presence
- Concha bullosa size
Why This Test
- Confirm chronic rhinosinusitis
- Detect complications like orbital abscess
- Evaluate trauma-related fractures
- Map anatomy before sinus surgery
When to Take Test
Benefits
Benefits of Taking the Test
- Quick: 5–10 minutes scan time
- Accurate: detects 1 mm lesions
- Non-invasive: no scopes inside the nose
- Guides therapy: reduces unnecessary antibiotics
Illnesses Diagnosed with CT PNS
- Acute and chronic sinusitis
- Nasal polyposis
- Mucocele or pyocele
- Sinonasal tumors
- Deviated nasal septum
- Fungal balls or allergic fungal sinusitis
Preparing for test
- Remove earrings, glasses, and metal hairpins
- Wear a hospital gown if clothing has metal zippers
- No fasting required for non-contrast scans
- For contrast studies: 4-hour fasting and kidney function test (if diabetic or >60 yrs)
11. Pre-requisites
- Doctor’s prescription
- Previous scan films (if any) for comparison
- Pregnancy test for women of child-bearing age opting for contrast
- KFT report if contrast is planned
12. Best Time to Take the CT PNS Procedure
- Morning slots reduce wait times and provide same-day reports
- Avoid during active nosebleeds—wait until bleeding stops
13. Eligibility
Suitable
- Adults and children >5 yrs with persistent symptoms
- Patients scheduled for sinus surgery
Unsuitable
- Pregnant patients (unless urgent)
- Individuals with severe contrast allergy
14. Procedure for Taking a CT PNS Procedure
- Check-in: arrive 15 min early
- Metal removal: store valuables in locker
- Positioning: lie on the CT table, head in a soft holder
- Scan: stay still for 5–10 seconds while the machine rotates
- Contrast (if needed): IV line inserted; warm sensation felt for 30 sec
- Completion: table slides out; immediate return to normal activities
15. Caution Before Taking the Test
- Notify staff of kidney disease or diabetes if contrast is used
- Carry list of current medications—some may interact with contrast dye
- Remove eye makeup; metallic particles can distort images
Test Results
Results and Interpretations
| Finding / Observation | Description | General Interpretation / Significance |
|---|---|---|
| Normal scan | No abnormalities detected | Indicates healthy sinuses with no signs of disease |
| Mild inflammation | Slight mucosal thickening or swelling | Suggests early or mild sinusitis; clinical follow-up recommended |
| Fluid accumulation | Presence of fluid levels in sinuses | Indicates active sinus infection or blockage |
| Septal deviation | Deviation of the nasal septum angle | May cause nasal obstruction; relevant for surgical planning |
| Abnormal mass | Unusual densities or shadowing | Could signify polyps, tumors, or fungal infection; needs further evaluation |
| Bone erosion/fracture | Loss or damage to bony structures | Suggests trauma or aggressive disease process |
Risks & Limitations
Risks
- Radiation exposure: comparable to 6 months of natural background; still kept ALARA (As Low As Reasonably Achievable)
- Pregnancy: inform staff if you are or might be pregnant
Limitations
- Cannot always separate active infection from post-infection scarring
- Metallic dental fillings may create streak artifacts
5. Types of CT PNS Procedure
| Type | Use Case |
|---|---|
| Standard CT PNS | General sinus evaluation |
| Contrast CT PNS | Suspected tumors or fungal disease (IV dye required) |
| Low-dose CT PNS | Pediatric or follow-up cases |
FAQs
Is CT PNS painful?
No, it is completely painless and non-invasive.
How much does a CT PNS cost at Cadabams Diagnostics?
Pricing is transparent and starts at ₹2,800 for standard scans; contact us for exact packages.
Can children undergo CT PNS?
Yes, we use pediatric protocols to keep radiation dose minimal.
Do I need hospital admission?
No, the procedure is outpatient and takes under 30 minutes total.
What is the ct pns test price at Cadabams Diagnostics?
The cost of a CT PNS scan can vary. For the most accurate and up-to-date pricing information, we recommend you contact our front desk directly or visit our online pricing page. Our team will be happy to assist you.