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What is a CT Scan?
Computed Tomography (CT), also known as a CT scan, is an advanced, non-invasive diagnostic imaging procedure. By combining traditional X-rays with sophisticated computer processing technology, the scanner rotates 360 degrees around the body to capture highly detailed cross-sectional images. These images are significantly more comprehensive than standard X-rays, providing doctors with crystal-clear views of internal organs, bones, blood vessels, and soft tissues for accurate diagnosis.
Clinical Applications:
- Heart & Coronary Arteries: Non-invasively evaluates coronary artery calcification and narrowing, acting as a highly effective screening tool for potential coronary heart disease.
- Lungs & Chest: Utilizing Low-Dose CT (LDCT) technology, it is an excellent method for early lung cancer screening, capable of detecting tiny nodules invisible to conventional X-rays. It also aids in diagnosing pneumonia and pulmonary embolism.
- Brain & Head: Rapidly assesses brain tissue structures, which is critical for diagnosing neurological emergencies such as acute strokes, brain hemorrhages, tumors, and head traumas.
- Abdomen & Pelvis: Offers a comprehensive evaluation of the liver, gallbladder, pancreas, spleen, kidneys, and reproductive organs to help detect inflammation, internal bleeding, stones, or early-stage tumors.
- Bones & Joints: Provides clear 3D visualization of complex bone fractures, joint degeneration, and spinal conditions.
Scan Procedure Overview:
- During the examination, you will lie comfortably on a motorized table that smoothly slides into the scanner’s circular opening.
- To ensure optimal image quality, please remain as relaxed and still as possible during the scan.
- For certain procedures, our radiographer may instruct you via an intercom to hold your breath for a few seconds.
Pre-examination Precautions (For Scans Requiring Contrast Medium):
- Patients with renal conditions must present a renal function blood test report issued within the past three months.
- For Coronary Artery CT Scans, please refrain from strenuous exercise and avoid caffeinated beverages (e.g., coffee, strong tea, cola) for 12 hours prior to the test.
- If you have a history of allergies to medical contrast media, please inform our doctor or medical staff when making your appointment and before the scan.
- Female patients must ensure they are not pregnant before undergoing this examination.
Does a CT Scan have any side effects?
Generally, a routine CT scan is highly safe and does not cause direct side effects. Although it involves radiation, our advanced low-dose equipment keeps exposure to a minimum. For scans requiring a contrast medium, a very small number of patients might experience a mild, temporary allergic reaction (such as a warm flush or slight nausea), but severe allergies are exceptionally rare.
What is a "contrast medium"? Do I need an injection for a CT scan?
A contrast medium is a medical dye used to enhance the visibility of specific blood vessels, organs, or tissues on the scan images. Whether you need an injection depends entirely on the body part being examined and your doctor’s diagnostic requirements. Routine bone or basic chest scans usually do not require it.
How long does the entire examination process take?
The actual scanning time inside the machine is incredibly brief, often taking just a few seconds to a few minutes. However, you should allow approximately 15 to 30 minutes for the entire process, which includes preparation, positioning, changing clothes, and administering contrast dye if required.
