MRI Paranasal Sinuses (Pns)

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An MRI of the Paranasal Sinuses (PNS) is a specialized imaging test that provides high-resolution images of the sinuses, nasal cavity, and surrounding soft tissues using magnetic fields and radio waves. It helps detect abnormalities that may not be visible in a standard X-ray or CT scan.
Why is it Done?

MRI of the paranasal sinuses is used to diagnose:

• Chronic or recurrent sinus infections (sinusitis)
• Nasal polyps and mucosal thickening
• Sinus tumors or cysts
• Structural abnormalities in the nasal cavity
• Fungal infections in the sinuses
• Inflammatory conditions affecting the sinuses
• Orbital or brain involvement from sinus diseases

Description

Test Preparation

To ensure accurate results, follow these preparation guideline:

 Clothing & Accessories:
• Wear loose, comfortable clothing without metal components (zippers, buttons, or hooks).
• Remove all metal objects, including jewelry, watches, piercings, eyeglasses, and hearing aids.
 Medical History & Safety Precautions:
• Inform your doctor if you have:
• Metal implants (e.g., pacemakers, aneurysm clips, cochlear implants, dental fillings, or braces).
• Claustrophobia (a mild sedative may be provided if needed).
• A history of kidney disease (if contrast dye is required).
• Pregnancy or breastfeeding (to assess safety).
Fasting & Contrast Injection (If Required):
• Fasting is not required unless your doctor orders a contrast-enhanced MRI.
• If contrast dye (gadolinium-based) is needed, you may be asked to fast for 4–6 hours before the test.
• Drink plenty of water unless advised otherwise.
 During the Scan:
• The procedure lasts 30–60 minutes.
• You will need to lie still on the MRI table for clear imaging.
• The MRI machine makes loud tapping noises; earplugs or headphones will be provided.
• If contrast dye is required, it will be administered through an IV.
• If you feel uncomfortable, you can communicate with the technician via an intercom.
 After the MRI:
• If no sedation or contrast was used, you can resume normal activities immediately.
• If contrast dye was administered, drink plenty of water to help flush it out of your system.