CT SCAN OF HRCT

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CT SCAN OF HRCT Image

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60 mins collection

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About The Test

HRCT scanning is one of the diagnostic imaging tests that involve high precision and detail. It can be used to determine problems relating to the lungs, liver, and numerous other organs. Prior to being scanned, a patient is asked to take out any metals which may cause disturbance during the scan, dress in loose clothing, and never the least avoid specific medications.  

What is HRCT Scan?  

An HRCT scan refers to high-resolution images of internal organs taken using X-ray machines. While performing the CT scans, the X-ray tubes and detectors are moved all around the patient’s body. At the end, the computer stitches together all images into one single clear image’s cross-section. 

Types of HRCT Scans 

There are two basic types of HRCT scans: 

  • Non-contrast HRCT scan: non-contrast procedures do not apply injection of contrast materials and are performed to diagnose various lung diseases. 
  • Contrast-enhanced HRCT scan: In this type, the focus is on adding contrast dye to blood vessels and organs. It is normally used to check liver disease or some other conditions. 

List of Parameters

List of Parameters Considered During the HRCT Scan

The following are the parameters a medical practitioner considers while performing an HRCT scan: 

  • Slice thickness: Refers to the increments on the cross-sectional images, or slices taken throughout the scan. 
  • Image orientation: This corresponds to the direction that the images of the subject are taken. 
  • Contrast enhancement: This is the use of contrast dye in an organ or blood vessel to outline it. 
  • Patient positioning: This refers to the position of the patient in relation to the machine during the scan. 

These and other factors: age, weight, medical history, and chronic illnesses will also be customized according to the patient’s needs. 

Why This Test

Reasons for Taking an HRCT Scan

An HRCT scan can be advised for the assessment and tracking of numerous disorders such as:  

  • Lung diseases like chronic obstructive pulmonary disease (COPD) and lung cancer. 
  • Liver disorders such as cirrhosis and liver cancer. 
  • Abdominal pain or an intestinal blockage. 
  • Clots in the blood vessels or other vascular issues. 

When and Who Needs to Take an HRCT Scan? 

The following symptoms may warrant an HRCT scan:  

  • Chronic cough or breathlessness.  
  • Pain in the chest region or trouble breathing.  
  • Pain in the tummy area or liver complications.  
  • Coughing or vomiting blood.  
  • Recurrent feverish chills. 

The test is usually suggested for individuals who are most likely to develop lung disease, like heavy smokers, people known to have lung disease in the family, and those who have been exposed to certain chemicals or toxins. 

Benefits

Benefits of Taking the Test

The advantages connected with an HRCT scan are as follows:  

  • Detailed Internal Images: The imaging test provides great detail about the internal structures of the human body aiding in proper diagnosis and monitoring. 
  • Harmless: The test does not harm the body as it involves no cutting and no passages are opened. There is no need for surgical intervention. 
  • Simple and Fast: The procedure does not take long, and its unharmed nature allows it to be completed within moments. 

Illnesses Diagnosed with HRCT Scan

The most diagnosed illnesses with the use of HRCT scans are:  

  • Lung Cancer. 
  • Chronic Obstructive Pulmonary Disease (COPD). 
  • Emphysema. 
  • Bronchitis. 
  • Liver Cancer. 
  • Cirrhosis. 

Preparing for test

Preparing for HRCT Scan

Patients who need to go through an HRCT scan are advised to:  

  • Dress in simple clothing to allow ease of movement. 
  • Take off metal jewellery that can affect the scan such as face glasses. 
  • Do not eat or drink for some hours prior to testing, if applicable. 
  • Advise the technician of any relevant medication or allergy history. 

Pre-requisites 

An HRCT scan does not have any prerequisites, but patients may need to: 

  • Give a list of pertinent drugs and allergies. 
  • Be free of any metallic items that may hinder the scan. 
  • Don a hospital gown or comfortable attire. 

Best Time to Take the HRCT Scan 

The scan may be performed at any time. However, it may be preferred in the morning or early afternoon hours.  

Eligibility 

Patients with some symptoms or risk factors of lung disease or any other pathology identifiable through HRCT scans are encouraged to get one done. There may be exceptions for some medical conditions such as renal disease.  

Procedure for Taking an HRCT Scan 

An HRCT scan takes about 10-30 minutes. The following steps will be taken during this time: 

  1. Preparation: The patient undergoing the test has to remove any metallic items. They will also need to change into a hospital gown or loose clothing. 
  2. Positioning: The patient will be placed on a table or bed. They will be asked to remain still during the scan. 
  3. Scan: The X-ray source and detector rotate about the body, capturing images from many different perspectives. 
  4. Post-Test: The patient can leave and go back to their normal activities. 

Caution Before Taking the Test 

Inform the technician of any medications or allergies, as well as any of the following: 

  • Known or suspected pregnancy  
  • Nursing 
  • Kidney issues 
  • Liver issues 
  • Some medical devices like pacemakers or artificial joints 

Test Results

Results and Interpretations

Condition/Findings Description Interpretation
Lung Nodules Small, rounded growths on the lungs May indicate lung cancer or other conditions.
Ground-Glass Opacification A hazy or cloudy appearance on the lungs May indicate lung disease or other conditions.
Emphysema Damage to the air sacs in the lungs May indicate chronic obstructive pulmonary disease (COPD).
Bronchitis Inflammation of the airways May indicate chronic obstructive pulmonary disease (COPD).

FAQs

Is an HRCT scan safe?

Generally, the test is safe, however, there are some risks such as radiation exposure or an allergic reaction to contrast dye.   

How long does the test take?

The test takes about 10-30 minutes.  

What should I wear for the test?

You should wear loose, comfortable clothing and metal objects that would interfere with the scan should be removed.   

Can I eat or drink before the test?

Depending on the medical condition, patients may have to refrain from eating or drinking a few hours prior to the test.   

How will I get my test results?

The results will be reviewed by a radiologist and sent to your clinician, with whom you will have a consultation regarding the findings.

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