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What Is a Computed Tomography Scan, Procedure & Results

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In modern diagnostic imaging, understanding what a computed tomography scan is helps us make informed decisions about our health, especially when we are advised to undergo a CT scan in Bangalore at a trusted diagnostic centre.

Many of us feel anxious when a doctor recommends a CT scan, mainly because we are unsure about the procedure, safety, or results. A computed tomography scan is actually one of the most advanced and widely used imaging techniques in modern medicine. 

At Koshikaa, knowing what happens before, during, and after the scan can remove fear and replace it with clarity. By the end of this blog, you will clearly understand how a CT scan works and why it plays such a crucial role in accurate diagnosis.

Medical Disclaimer

The information provided in this blog is for general educational and informational purposes only and should not be considered medical advice. While we aim to share accurate and up-to-date content, it is not a substitute for professional medical consultation, diagnosis, or treatment. Always consult a qualified healthcare provider or physician regarding any medical condition, symptoms, or health concerns before undergoing a CT scan or any diagnostic procedure. 

Key Points at a Glance

  • Understand clearly what is a computed tomography scan
  • Learn the purpose of computed tomography in medical diagnosis
  • Explore the common uses of computed tomography
  • Know about the types of computed tomography scans
  • Understand computed tomography with contrast
  • Get clarity on computed tomography cost and reports
  • See how Koshikaa supports safe and accurate CT scanning

What is a Computed Tomography Scan?

What Does a CT Scan Do?

When we explain what is a computed tomography scan, we are talking about a medical imaging test that combines X-rays and computer technology. It creates detailed cross-sectional images of the body, including bones, organs, blood vessels, and soft tissues. These images are much more detailed than regular X-rays.

A CT scan allows doctors to view the body layer by layer. This detailed imaging helps detect conditions that may not be visible through standard tests. The procedure is fast, painless, and highly reliable for diagnosis. 

What Is The Purpose of Computed Tomography

The purpose of computed tomography is to help doctors diagnose, monitor, and sometimes guide treatment. It provides clear images that help identify injuries, infections, tumors, and internal bleeding. CT scans are also used to check how well treatments are working.

Doctors prefer CT scans because they offer speed and accuracy. In emergencies, they help identify life-threatening problems quickly. This makes them a critical tool in modern healthcare.

What Are The Uses of Computed Tomography in Healthcare

The uses of computed tomography are wide-ranging across different medical specialities. It plays an important role in diagnosing conditions early and accurately. CT scans are used for both routine checks and emergency evaluations.

Common uses include:

  • Detecting fractures and internal injuries
  • Identifying tumors and cysts
  • Diagnosing infections and inflammation
  • Evaluating heart and lung conditions
  • Guiding biopsies and surgeries

Types of Computed Tomography Scans

There are several types of computed tomography scans, each designed to examine specific parts of the body. The type of scan recommended depends on symptoms and medical history. Understanding these types helps us know why a particular scan is advised.

Type of CT ScanArea ExaminedUsed To Detect
Head and Neck CTBrain, skull, glands and lymph nodesStroke, injury, tumours, infections and bleeding
Brain CT
Cross-sectional images of the brainStroke, tumours and neurological issues
CT orbit scanEye sockets and surrounding structuresFractures, tumours and infections
Chest CT
Lungs, heart and chest cavityInfections, tumours and fluid buildup
HRCT Chest ScanLungsFibrosis, pneumonia and COVID-19 effects
Thorax CTLungs, oesophagus and lymph nodesTumour, infections and injury
Cardiac CTHeart anatomy, coronary arteries Blockages and aneurysms
Abdomen and Pelvis CT
Liver, kidneys, intestines and bladderPain, tumours, infections and digestive issues
Spine CTVertebrae, spinal canal and discsFractures, disc herniation and spinal injuries
CT KUB ScanKidney, ureters and bladderStones, blockages and infections
Hip Joint CTHip bones and joint spacesFractures, arthritis and joint abnormalities
Knee CTBones and soft tissues around the knee jointInjuries, ligament damage and arthritis
CT UrographyKidney, ureters and bladderUrinary tract obstructions, stones and cancers

Computed Tomography With Contrast Explained

Sometimes doctors recommend computed tomography with contrast for better image clarity. Contrast material is a special dye that highlights blood vessels, organs, or tissues. It makes abnormalities easier to detect.

Contrast may be given orally, through an injection, or both. Most people tolerate it well, and side effects are usually mild. Doctors always review medical history before using contrast.

How to Prepare for a CT Scan

Preparing for a CT scan is usually simple and stress-free. The preparation depends on whether contrast is used. Our team at Koshikaa provides clear instructions beforehand.

General preparation tips include:

  • Informing us about allergies or medications
  • Fasting for a few hours if contrast is required
  • Wearing comfortable clothing without metal
  • Removing jewellery before the scan

Following these steps ensures accurate results and a smooth experience.

Step-by-Step CT Scan Procedure

Step-by-Step CT Scan Procedure

Understanding the CT scan procedure helps reduce anxiety and prepares us mentally for the test. A CT scan is a non-invasive, painless procedure that is usually completed within a short time. The entire process is conducted under the supervision of trained radiology professionals to ensure accuracy and safety.

  • Before the scan begins, we are guided into the scanning room and asked to lie comfortably on a motorised table. The technician positions us carefully to ensure the correct body part is scanned. Cushions or straps may be used gently to help us stay still during the procedure.
  • As the scan starts, the table slowly slides into the circular CT scanner. The scanner rotates around us, taking multiple X-ray images from different angles. These images are then processed by a computer to create detailed cross-sectional views of the body.
  • During the scan, we may be asked to hold our breath for a few seconds. This helps prevent motion and ensures clear images, especially for chest or abdominal scans. We can communicate with the technician at all times through an intercom, which helps us feel reassured and supported.
  • The scan itself usually takes only a few minutes, although slightly more time may be needed if contrast material is used. Once the imaging is complete, the table slides out, and we can usually return to our normal activities immediately. 

At Koshikaa, patient comfort, clear instructions, and constant communication are prioritized throughout the procedure to ensure a smooth and stress-free experience.

Is a CT Scan Safe?

Safety is a common concern, and it is completely valid. CT scans do involve low levels of radiation, but they are considered safe when medically necessary. The benefits usually outweigh the risks.

Modern CT machines use advanced technology to minimize radiation exposure. Doctors recommend scans only when needed and follow strict safety guidelines.

Computed Tomography Cost: What to Expect

The computed tomography cost can vary based on several factors. These include the type of scan, use of contrast, and body area being examined. Costs may also differ between diagnostic centres.

FactorImpact on Cost
Type of CT scanBasic vs advanced
Contrast usageIncreases cost
Body part scannedSingle vs multiple areas
Technology usedStandard vs advanced scanners

At Koshikaa, we aim to offer transparent pricing without hidden charges. Here is the detailed cost breakdown.

ScanWithout Contrast CostWith Contrast Cost
Head and Neck CT₹5000/-₹7000/-
CT Brain ₹5000/-₹7000/-
CT orbit scan₹4000/-₹4000/-
Chest CT₹6000/-₹6000/-
HRCT Chest Scan₹6000/-₹8000/-
Thorax CT₹6000/-₹6000/-
Cardiac CT₹6000/-₹6000/-
Abdomen and Pelvis CT₹6000/-₹12000/-
Spine CT₹6000/-₹8000/-
CT KUB Scan₹6000/-₹12000/-
Hip Joint CT₹6000/-₹8000/-
Knee CT₹6000/-₹6000/-
CT Urography₹4000/-₹6000/-

Understanding a Computed Tomography Report

A computed tomography report is a detailed medical document prepared by a radiologist after carefully analysing the CT scan images. The radiologist studies each image to identify normal structures as well as any abnormalities. This report plays a key role in helping doctors confirm a diagnosis or decide the next steps in treatment.

  • The report usually begins with a brief description of the scanned area and the reason the scan was performed. It also mentions the type of CT scan used, such as whether contrast material was involved. This information helps doctors understand the context of the findings.
  • The main section of the report includes observations and identified abnormalities, if any. This may describe changes in organ size, shape, density, or the presence of masses, fluid, or inflammation. These findings are written in medical terms to ensure accuracy and clarity for healthcare professionals.
  • Towards the end, the report provides an impression or summary. This is one of the most important sections, as it highlights the key findings and suggests possible diagnoses. In some cases, the radiologist may also include recommendations for further tests or follow-up scans.

Doctors review the CT scan report along with clinical symptoms and other test results. They then explain the findings in simple, understandable language, helping patients clearly understand their results and the planned course of care.

CT Scan for Health Screening

CT scans are sometimes used as part of preventive health screening. They help detect conditions early, even before symptoms appear. This is especially useful for high-risk individuals.

As a trusted health screening centre in Bangalore, Koshikaa focuses on responsible and need-based screening. We ensure CT scans are used appropriately and interpreted carefully. Preventive imaging can be life-saving when done correctly.

When Should We Get a CT Scan?

A CT scan is recommended when detailed imaging is needed. Doctors usually suggest it after evaluating symptoms and initial test results. It is not done routinely unless required.

Common reasons include:

  • Persistent pain with unclear cause
  • Suspected internal injuries
  • Monitoring known medical conditions
  • Evaluating treatment response

Tips for a Comfortable CT Scan Experience

A calm mindset can make the experience smoother. Simple preparation helps us feel confident and relaxed.

Helpful tips:

  • Ask questions if unsure
  • Follow breathing instructions carefully
  • Stay still during the scan
  • Inform staff about discomfort

Common Myths About CT Scans

There are many misconceptions around CT scans. Clearing them helps reduce fear and confusion.

MythsFacts
CT scans are extremely dangerousRadiation levels are controlled and safe.
“CT scans are painful.”
The procedure is completely painless.
“Reports are difficult to understand.”Doctors and centres like Koshikaa help explain results clearly.

Final Thoughts

Understanding what is a computed tomography scan empowers us to approach medical imaging with confidence instead of fear. CT scans play a vital role in accurate diagnosis, treatment planning, and health monitoring. 

At Koshikaa, we combine advanced technology with patient-first care to ensure safe and reliable imaging. If you are considering a CT scan in Bangalore, choosing a trusted diagnostic partner can make all the difference in your healthcare journey.

Frequently Asked Questions

1. How does a computed tomography work?

A computed tomography scan works by using rotating X-rays and computer technology to capture multiple images from different angles. These images are combined to create detailed cross-sectional views of internal organs, bones, and tissues.

2. What is the duration of a CT scan?

The duration of a CT scan is usually short and takes about 5 to 10 minutes. Some complex scans or scans using contrast may take slightly longer, but the procedure is generally quick and painless.

3. What is the CT scan cost?

The CT scan cost depends on factors such as the body part being scanned, whether contrast is used, and the type of scan required. Costs may vary between basic and advanced CT imaging procedures. In India basic CT scan costs around ₹4000 to ₹6000, and advanced scans cost around  ₹8000 to  ₹12000

4. What should I inform my doctor about before a CT scan?

Before a CT scan, we should inform the doctor about allergies, kidney problems, pregnancy, ongoing medications, or previous reactions to contrast dye. This helps ensure safety and determines whether special precautions are needed.

5. Why is a CT scan done?

A CT scan is done to diagnose injuries, infections, tumors, internal bleeding, or organ problems. It helps doctors get clear and detailed images, allowing accurate diagnosis, treatment planning, and monitoring of medical conditions.

Reference:

1. https://www.nibib.nih.gov/science-education/science-topics/computed-tomography-ct 

2. https://my.clevelandclinic.org/health/diagnostics/4808-ct-computed-tomography-scan 

Image source:

1. https://www.heart.org/en/health-topics/heart-attack/diagnosing-a-heart-attack/cardiac-computed-tomography 

2. https://en.wikipedia.org/wiki/CT_scan 

3. https://www.verywellhealth.com/what-is-a-cat-scan-189603 

4. https://www.researchgate.net/figure/Brain-computed-tomography-CT-images-showing-the-spectrum-of-neuroradiological-findings_fig3_335268048 

MRI of the uterus is primarily used for diagnosing and evaluating conditions such as uterine fibroids, adenomyosis, and malignancies. It is particularly useful in the planning of surgical procedures and assessing the extent of gynecological diseases. This imaging test is valuable for its ability to deliver detailed cross-sectional images of the uterus and surrounding structures.
An MRI of the spleen can help diagnose various disorders affecting the spleen including splenomegaly (enlarged spleen), tumors, and other abnormalities. It provides clear, detailed images that are crucial for assessing the health of the spleen and planning potential surgical interventions.
Prostate MRI is a non-invasive imaging technique that provides detailed pictures of the prostate gland and surrounding tissues. It helps in the detection, staging, and monitoring of prostate cancer. Prostate MRIs are increasingly used to guide biopsy procedures and assist in the planning of treatment strategies for prostate health.
An MRI of the pancreas is used to identify issues such as pancreatitis, pancreatic cancer, and other pancreatic disorders. It offers high-resolution images that help in detecting small lesions and assessing the pancreatic ducts. This imaging technique is valuable for guiding biopsies and planning surgeries involving the pancreas.
MRI scans of the liver, kidney, and bile ducts provide detailed images that help diagnose various conditions, such as tumors, cysts, and blockages in the bile ducts. They are crucial for assessing organ damage, staging cancer, and planning liver or kidney-related surgeries. This type of MRI can also evaluate the health and function of these organs comprehensively.
Breast MRI is highly sensitive for detecting breast cancer, especially in individuals with dense breast tissue or a high risk of cancer. It is often used in conjunction with mammography to provide a more comprehensive evaluation. Breast MRIs can also monitor the response to breast cancer treatments and provide detailed pre-surgical mapping.
Brain and spine MRIs are critical tools for diagnosing and monitoring neurological conditions, including tumors, spinal cord injuries, and multiple sclerosis. These MRIs can reveal abnormalities in brain tissue and spinal cord structure that might not be visible with other imaging methods. They are essential for planning surgeries and assessing the effectiveness of treatments in neurology.
PET-CT scans of transplant organs like the liver, kidney, or pancreas are performed to assess metabolic activity, detect complications, and monitor post-transplant function. These scans play a vital role in the early detection of issues such as organ rejection, recurrence of disease, or infection, guiding timely interventions and optimizing transplant outcomes for patients.
PET-CT examinations of organs such as the liver, kidney, or prostate are crucial for assessing metabolic activity, detecting abnormalities, and monitoring disease progression. These scans help diagnose conditions such as liver metastases, renal cell carcinoma, or prostate cancer, guiding treatment decisions and monitoring response to therapy over time.
PET-CT scans of soft-tissue masses are utilized to assess metabolic activity and detect malignant tumors or other abnormalities. By combining PET imaging with CT imaging, these scans provide detailed information about tumor location, size, and metabolic characteristics, aiding in accurate diagnosis and treatment planning for soft-tissue cancers.
PET-CT scans are valuable for detecting cysts or fluid collections within the body, including cysts in the liver, kidneys, or other organs. These scans help characterize the nature and metabolic activity of cysts, guiding diagnosis and treatment planning for conditions such as cystic liver disease, renal cysts, or pancreatic cysts.
PET-CT scans of muscles are performed to assess metabolic activity and detect abnormalities such as inflammation, infection, or tumors. These scans provide valuable information about muscle function and pathology, aiding in the diagnosis and management of conditions like myositis, muscular dystrophy, or soft-tissue sarcomas.
PET-CT scans of the brain are utilized to evaluate brain metabolism and detect abnormalities such as tumors, epilepsy, or neurodegenerative diseases. By combining functional PET imaging with anatomical CT imaging, these scans offer comprehensive information about brain function and structure, guiding neurosurgical interventions and treatment decisions for neurological disorders
PET-CT scans of bones are commonly used to detect bone metastases in cancer patients, assess bone health in conditions like osteoporosis, and evaluate response to treatment. By combining PET and CT imaging, these scans provide detailed information about metabolic activity and anatomical changes in bone structures, aiding in accurate diagnosis and treatment planning for various bone-related conditions.
CT scans of the spine are conducted to assess the vertebrae, spinal cord, and surrounding soft tissues for conditions like herniated discs, spinal fractures, or spinal stenosis, aiding in the diagnosis and management of spinal disorders with detailed imaging essential for surgical planning and intervention.
CT scans of the pelvis are utilized to visualize the pelvic bones, reproductive organs, bladder, and surrounding structures for conditions such as fractures, tumors, or pelvic inflammatory disease, guiding treatment plans and surgical interventions with precise anatomical information.
CT scans of the neck are performed to evaluate structures such as the throat, thyroid gland, lymph nodes, and blood vessels for abnormalities like tumors, infections, or injuries, assisting in diagnosis and management of head and neck disorders with detailed imaging.
CT scans of the extremities are employed to assess bones, joints, and soft tissues in the arms or legs, aiding in the diagnosis of fractures, arthritis, or other musculoskeletal conditions, guiding orthopedic treatment and rehabilitation plans for optimal recovery.
CT scans of the chest are utilized to examine the lungs, heart, blood vessels, and surrounding structures for conditions such as lung nodules, pneumonia, or pulmonary embolism, facilitating accurate diagnosis and management of respiratory and cardiovascular diseases.
CT scans of the brain are conducted to assess brain structures, identify abnormalities like tumors, hemorrhages, or strokes, and aid in diagnosing neurological conditions, guiding neurosurgical interventions and treatment strategies with precise imaging of the brain’s anatomy.
CT scans of the abdomen are performed to visualize and evaluate the internal organs such as the liver, kidneys, pancreas, and intestines for conditions like tumors, infections, or injuries, providing detailed images essential for diagnosis and treatment planning.
Transplant organ ultrasound scans, including those of the liver, kidney, or pancreas, are performed to assess organ viability, detect complications, and monitor post-transplant function. These scans play a vital role in the early detection of issues such as organ rejection, vascular complications, or fluid collections, guiding timely interventions and optimizing transplant outcomes for patients.
Ultrasound examinations of organs such as the liver, kidney, or prostate are crucial for assessing organ structure, detecting abnormalities, and monitoring disease progression. These scans help diagnose conditions such as liver cirrhosis, kidney stones, or prostate enlargement, guiding treatment decisions and monitoring response to therapy over time.
Soft-tissue masses can be evaluated using ultrasound to determine their size, location, and characteristics. Ultrasound imaging helps differentiate between benign and malignant masses, guiding further diagnostic evaluation and treatment planning. By providing real-time imaging, ultrasound assists in the precise localization of soft-tissue masses for biopsy or surgical removal if needed.
Ultrasound scans are valuable for detecting cysts or fluid collections within the body, including cysts in the liver, kidneys, or other organs. These scans help characterize the nature and size of cysts, aiding in diagnosis and treatment planning for conditions such as cystic liver disease or renal cysts, and guiding interventions such as cyst drainage or sclerotherapy.
Musculoskeletal ultrasound scans are used to assess the health and integrity of muscles, identifying issues such as strains, tears, or muscle inflammation. These scans provide detailed images of muscle structures, allowing healthcare providers to diagnose muscle injuries accurately and develop personalized rehabilitation plans to promote recovery and restore function.
Ultrasound examinations of joints are essential for evaluating joint health, detecting abnormalities such as inflammation, fluid accumulation, or cartilage damage. By visualizing the joint structures in real-time, ultrasound helps diagnose conditions like arthritis, bursitis, or ligament injuries, guiding treatment decisions and monitoring disease progression over time.
Ultrasound scans of tendons are performed to assess for injuries, inflammation, or tears, aiding in the diagnosis and management of conditions such as tendonitis or tendon tears. These scans provide detailed images of tendon structures, helping healthcare providers determine the extent of damage and plan appropriate treatment strategies, including physical therapy or surgical intervention if necessary.
Pelvis X-rays play a crucial role in diagnosing injuries, diseases, and developmental conditions affecting the pelvic region. They provide detailed images of the hip bones, sacrum, and coccyx, aiding in the assessment of fractures, dislocations, or signs of arthritis. Pelvic X-rays are instrumental in guiding surgical interventions, monitoring healing progress, and evaluating conditions such as osteoporosis or tumors. By providing precise anatomical information, these imaging studies enable healthcare professionals to deliver personalized care and improve patient outcomes.
Teeth X-rays, known as dental radiographs, are indispensable tools for dentists to assess oral health. They aid in diagnosing dental decay, gum disease, and abnormalities in tooth structure or alignment. These images provide valuable insights into hidden dental issues, allowing for early intervention and prevention of complications. Additionally, dental X-rays are essential for planning treatments such as orthodontics, root canals, or dental implants, ensuring optimal outcomes and patient satisfaction.
Spine X-rays are pivotal in diagnosing spinal fractures, degenerative conditions, and spinal misalignments, providing critical information for treatment planning and monitoring spinal health. They offer detailed images of the vertebrae and surrounding structures, enabling healthcare professionals to identify issues such as scoliosis, disc herniation, or spinal stenosis
Skull X-rays are valuable for detecting fractures, assessing head trauma, and evaluating the alignment of facial bones, crucial in diagnosing conditions like fractures, tumors, or developmental abnormalities in the skull. They provide detailed views of the cranial structure, aiding clinicians in determining appropriate treatment strategies and ensuring patient safety.
For the heart, X-ray solutions can aid in the detection of various cardiac problems, ranging from mild to severe, including – Heart failure, Cardiac congestion and other heart-related conditions. In addition to cardiac assessments, X-ray solutions are also used for breast examinations to identify tumors or signs of breast cancer.

Bone X-rays are essential for diagnosing fractures and assessing bone alignment, aiding doctors in developing treatment plans and monitoring healing progress. They provide detailed images of the skeletal system, helping identify abnormalities or injuries that may not be visible through other imaging techniques

Abdominal X-rays are performed when patients experience symptoms such as significant nausea, ongoing vomiting, abdominal pain, flank or back pain, or abdominal swelling. These X-rays can help diagnose various conditions.

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