Can low-dose spiral CT detect early-stage lung cancer?

Mar 13, 2025 Source: Cainiu Health

Dr. Ren Yi

Introduction

In general, low-dose spiral CT can detect early-stage lung cancer. If necessary, it is recommended to undergo the examination under a doctor's guidance. Low-dose spiral CT has high density resolution, allowing clear differentiation of structures within lung tissue that have slight differences in density. Even very small lung nodules with density slightly different from that of surrounding normal lung tissue can be accurately identified.

In general, low-dose spiral CT can detect early-stage lung cancer. If necessary, it is recommended to undergo the examination under a doctor's guidance. Detailed explanations are as follows:

Low-dose spiral CT offers high-density resolution, clearly distinguishing structures within lung tissue that have slight differences in density. Even very small lung nodules with density different from that of surrounding normal lung tissue can be accurately identified. Compared with conventional X-ray examination, low-dose spiral CT uses tomographic scanning to image the lungs in thin, millimeter-level slices, capturing nodules with diameters of only a few millimeters or even smaller. These nodules may represent early-stage lung cancer, thereby improving the detection rate of early lung cancer.

Low-dose spiral CT employs spiral scanning technology, which enables continuous, uninterrupted scanning of the entire lungs within a short time, avoiding possible missed scans that may occur with traditional CT scanning. Using computer processing, these vast amounts of scanning data can be reconstructed into three-dimensional images and further processed, allowing observation of the lungs from different angles and layers. This facilitates the detection of early-stage lung lesions that are hidden or irregular in shape, providing more comprehensive and accurate evidence for early diagnosis.

In daily diet, it is advisable to consume more foods rich in antioxidant substances such as vitamin C, vitamin E, and beta-carotene, such as fresh vegetables and fruits, which help reduce oxidative damage to lung cells.

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