CT SCAN BRAIN & ORBITS

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60 mins collection

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6hrs

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About The Test

A CT (Computed Tomography) scan of the brain and orbits is a type of imaging test that captures the head and eye sockets (orbits) using X-rays and a computer. This test is widely done to help identify and manage problems such the headaches, dizziness, seizures, or eye trauma. 

What is a CT Scan of Brain and Orbits? 

CT scan of the brain and orbits consists of an automatic X-ray machine that rotates around the patient capturing the brain and orbits. The X-ray machine has a computer that turns the captures into a detailed 3D image of the inner parts of the brain and orbits. This technology allows a doctor to view the orbits and the brain structures in finer details which helps in the diagnosis and management of many conditions. 

Types of CT Scan of Brain & Orbits 

A CT scan of the brain and orbits may be classified into different types, such as: 

  • Non-contrast CT scan: This is the standard form of CT scan, which employs X-rays to image the brain and orbits. 
  • Contrast CT scan: This type of scan uses a contrast agent to enhance specific areas of the brain and orbits. 
  • Spiral CT scan: This type of scan captures the brain and orbits in a spiral motion. 

List of Parameters

List of Parameters Considered During the CT Scan of Brain & Orbits

During the procedure, the following parameters are taken into consideration: 

  • The density associated with the brain tissue 
  • Tumorous and cystic growths 
  • The brain structure’s morphology and dimensions 
  • Inflammatory and bleeding changes 
  • Sinuses and orbital condition 

Why This Test

Reasons for Taking a CT scan of Brain & Orbits

Usually, the following conditions warrant a CT scan of the brain and orbits: 

  • Chronic headaches or migraine 
  • Dizziness and balance disturbances 
  • Convulsions and seizures 
  • Ocular trauma and other sight-related issues 
  • Suspected stroke or neoplasm of the brain 
  • Inflammatory sinus disease 
  • Trauma and concussion 

When and Who Needs to Take a CT scan of Brain & Orbits? 

A CT scan of the orbits and brain may be recommended for patients who present with: 

  • Eye trauma or any vision-related issues 
  • Intense headaches and migraines 
  • Dizziness, loss of coordination and balance 
  • Seizures and other convulsive activities 
  • Diagnosis of sinus infections and inflammation 
  • Suspected stroke or brain tumours 
  • Trauma to the head such as concussions 

This type of examination is frequently required by every patient irrespective of age, from toddlers to adults. 

Benefits

Benefits of Taking the Test

A CT scan of the brain and orbits has a few advantages such as: 

  • Precise identification of pathological conditions concerning the brain and orbits 
  • Early detection of lesions such as tumours or cysts 
  • Evaluation of the efficacy of treatment performed 
  • Diagnosis of cerebrums and bleeding in the brain 

Illnesses Diagnosed with CT scan of Brain & Orbits

These are the conditions that can be found using a CT scan of the brain and orbits: 

  • Tumours of the brain 
  • Stroke and cerebral vasculature 
  • Inflammatory diseases of the sinuses 
  • Ocular trauma or visual difficulties. 
  • Traumatic head injury or concussion. 
  • Epileptic manifestations. 
  • Tension-type headaches or migraines. 

Preparing for test

Preparing for a CT Scan of Brain & Orbits

The patients need to: 

  • Take off any metal or jewellery they’re wearing. 
  • Be in loose, comfortable attire. 
  • Refrain from food and drinks for 4-6 hours prior to the examination. 
  • Do not take medication which may alter the results of the examination. 

Pre-requisites 

No specific requirement must be fulfilled prior to performing a CT scan of a patient’s brain and orbit, but it is recommended for patients to inform their physician or radiology technician when: 

  • They are currently breastfeeding or pregnant. 
  • Have any medical implants or devices. 
  • Suffers from any form of allergy or hypersensitivity. 

Best Time to Take the CT Scan of Brain & Orbits 

This examination can be performed at any given time, though most often it is done around noon. 

Eligibility 

This exam is open for all ages, starting from infants up to the elderly; however, acceptability may be limited due to certain medical conditions or implants. 

Procedure for Taking a CT scan of the Brain and Orbits  

The exam will normally last for 15-30 minutes. It consists of the following steps: 

  1. Preparation: The patient is placed on a table that is moved into the CT scanner.  
  2. Scanning: The CT scanner moves around the patient capturing several images of the brain and orbits of the head. 
  3. Contrast injection: If contrast dye is to be used, it will be injected into the patient’s arm. 
  4. Image reconstruction: A computer puts together the images into detailed cross-sectional views of the brain and orbits. 

Caution Before Taking the Test  

Patients should notify their physician or technician if they:  

  • Are currently pregnant or breast feeding 
  • Have any medical implants or devices 
  • Have any allergies or sensitivities 
  • Suffer from kidney disease or total kidney failure 

Test Results

Results and Interpretations

Condition/Findings Description Interpretation
Normal Brain Tissue The brain tissue appears normal, with no signs of tumours or inflammation. The patient's brain tissue is normal, and there are no signs of any abnormalities.
Brain Tumour A tumour is visible in the brain, measuring 1 cm in diameter. The patient has a brain tumour that requires further evaluation and treatment.
Sinus Inflammation The sinuses appear inflamed, with signs of swelling and infection. The patient has sinusitis, which requires antibiotic treatment.
Stroke or Cerebral Vasculature There are signs of a stroke or cerebral vasculature disease, with evidence of bleeding or blockage. The patient has had a stroke or has cerebral vasculature disease, which requires immediate medical attention.

FAQs

What is the radiation dose from a CT scan of the brain and orbits?

The radiation dose from a CT scan of the brain and orbits is usually low, but it may differ based on the patient's size and the type of scan.

Can I eat or drink before the test?

A contrast material is required for the test, hence it is best to fast for a few hours before the test so as to minimize adverse effects from the contrast dye.   

How long does the test take?

The test usually lasts between 15 to 30 minutes.   

What if I am claustrophobic?

People with claustrophobia may have some level of anxiety or discomfort during the exam. The good news is the technician will likely give instructions and help the patient calm down.   

Can I take my medications before the test?

Patients need to inform their doctor or the technician about the medications they are on prior to the test. It is possible that some medications will affect the test and the doctor may recommend that the patient not take them prior to the test. 

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