The difference between CT and DR

CT is computed tomography and DR is digital X-ray photography.

2, the principle is different

CT is a reconstructed image obtained by computer post-processing. Both of them are based on X-ray examination, and then the lesions are found and diagnosed. But the difference between CT and DR is that CT examination is post-processing by computer, and then three-dimensional reconstruction can be obtained, which is more suitable for examination of various parts of the body.

3. Different uses

DR is mainly used for routine chest X-ray examination, followed by bone trauma and tumor of limbs. CT is suitable for the examination of all parts of the body. It is much more accurate than DR in the size, scope and nature of lesions, and the diagnosis is more specific, detailed and superior.

Extended data:

CT examination is mainly divided into:

1, CT plain scan-from head to toe, including head and neck, chest, abdomen, spine, pelvic cavity, limbs and other parts can be examined;

2. Enhanced CT scanning-intravascular contrast agent scanning. Intravenous injection of iodine-containing organic compounds, that is, contrast agents, generally enhances the rapid intravenous injection of contrast agents for scanning, so that the iodine content in the blood is maintained at a certain level, and the images of organs and lesions are enhanced and displayed more clearly.

3.CT-guided puncture biopsy-CT accurately locates suspected malignant nodules in the lung, and understands the benign and malignant nodules through pathological biopsy to reduce the pain caused by patients' surgery.

Baidu encyclopedia -CT

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