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Low-dose computerized tomography (LDCT) is a technology that can generate a three-dimensional image with high resolution. It reveals more details than conventional chest x-ray. Therefore, it can examine the abnormalities of the lung much more than conventional chest x-ray. Also, it uses a lower radiation dose than regular CT scan, making it safe as a lung cancer screening test.

LDCT is able to detect even very small nodules in the lung, which are too small to detect with conventional chest x-ray.
LDCT is able to detect early lung cancer. Hence, the cancer can be treated before it has spread outside the lung. This reduces lung cancer mortality.
LDCT is a technique that uses low radiation dose so the patient will expose less radiation than conventional CT.
IV contrast is not required.

The low-dose computerized tomography is recommended for people at high-risk of lung cancer who:

Are active or a previous smoker, aged over 50 years.
Have family members who smoke.
Live or work in an environment with high pollution or high levels of chemicals such as asbestos and radon.

After a consultation with your doctor, he or she will determine if a low dose computerized tomography test is appropriate for you.

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