A computed tomography (CT) scan is a diagnostic tool that leverages X-ray technology and computers to produce detailed images of the body’s interior, including organs, bones, muscles, and blood vessels. CT scans are integral to diagnostics in healthcare. They are used extensively to assist healthcare professionals with diagnosing, monitoring, and treating diseases and injuries. Let’s look at some of the many situations that call for a CT scan.
Detecting Tumours or Lesions within the Abdomen.
The abdomen houses many organs, including the stomach, gut, pancreas, liver, gallbladder, spleen, kidneys, bladder, ovaries and uterus. A CT scan of the abdomen may reveal something going on with any of these organs, including abnormal tissue and lesions. A CT scan can also show internal bleeding, injuries, infections, and obstructions, which can assist with diagnosis and choice of treatment.
Evaluating Head and Brain Injuries
CT scans are invaluable for diagnosing and treating head and brain injuries. Headaches and dizziness can be symptomatic of bleeding in the brain, or a fracture due to a head injury. Or it can point to a possible tumour, infection, or a blood clot.
A CT scan can show exactly where a tumour, injury or blood clot is located, which can assist doctors in choosing the optimal treatment.
Evaluating Heart Conditions
When a heart disease or abnormalities are suspected, a CT scan of the heart can provide an accurate visualisation of the heart structure and associated blood vessels, including the heart chambers, valves, coronary arteries, pulmonary veins, and aorta.
Some of the reasons that a heart CT may be ordered include:
- Monitoring the heart arteries for plaque buildup or other blockage
- Preparing for various procedures involving the heart
- Locating or confirming a tumour
- Evaluating the sac around the heart for fluid or calcification
Evaluating the Status of Lungs
Screening the lungs using a low-dose CT scan (LDCT) has become common practice to identify suspected cancerous tumours. Regular screening is recommended because lung cancer seldom shows any signs at the beginning of the disease. By the time lung cancer is diagnosed, the disease is usually already in an advanced stage when treatment doesn’t have a good chance of succeeding.
CT scans of the lungs can also alert medical professionals to the presence of excess fluid in the lungs and conditions like emphysema and pneumonia.
Assessing bones and joints
Providing detailed images of complex bone fractures is one of the key uses of CT scans in emergency medicine. The detailed images produced by CT scans are invaluable in guiding surgeons when preparing for surgery.
CT scans of the bones can provide detailed information about bone tissue and structure, revealing bone tumours and bone diseases like osteoporosis. Osteoporosis can cause bone mass to decrease, leading to millions of fractures annually.
Assisting Doctors with Procedures
Not only can CT scans produce images of everything inside the body; they can show exactly where every organ, bone, blood vessel, and other tissues are, including where tumours are.
This accuracy helps doctors with many procedures, such as surgery, biopsy, radiation and chemotherapy. The CT image shows a detailed picture of the area inside the body, reducing the risk of a doctor making a mistake during surgery or aiming radiation at a healthy part of the body.
Staging Cancer
CT scans are an invaluable tool for staging cancer. Staging cancer means determining how far the disease has progressed throughout the body. CT scans are employed in staging cancer because they can provide accurate information about the location, size, and development of a tumour.
Crucially, CT scans can also show if the cancer has spread to nearby organs or lymph nodes. Doctors can see if the disease has metastasised to other parts of the body. Without CT scans, it would be quite difficult to assess whether a treatment is working.
Finding the Source of Chronic Back Pain
Chronic back pain is one of the most common reasons for CT scans. Issues such as degenerative disc disease, herniated discs, fractured vertebrae, or spinal stenosis may be the cause of back pain. To establish the exact cause of the pain, and to better evaluate the condition, CT imaging is usually called for.
Doctors use lumbar-spine CT imaging, which provides a cross-section view of the lower back to confirm many conditions related to the spine, such as congenital defects of the spine, tumours, lesions, and more.
Doctors also use lumbar-spine CT scans to monitor the effectiveness of spine surgery or other treatments. These scans provide very detailed information about the structure and soft tissues of the spine, helping doctors to assess the condition of the spine accurately.
Evaluating the Extent of Injuries in an Emergency
When someone is injured in a traffic accident, during participation in a contact sport, or due to a violent attack, CT scans are invaluable for determining the extent of internal injuries. The high-resolution images provide a superior level of detail critical to establish the extent of soft tissue damage, internal bleeding and fractures.
The benefit of CT scans in emergencies is that they provide rapid results that assist surgeons and other health professionals in making decisions that can save the lives of victims. CT scans are indispensable in emergencies, making them a necessity in modern medicine. The high-resolution images, with their high level of detail, allow doctors and medical teams to make informed decisions about treatments, increasing patients’ chances of recovery.