Helical computed tomography

Helical computed tomography (also known as spiral computed tomography) is a type of CT scan that uses a specific form of radiology to visualize internal structures in the body. This method uses a computer-processed combination of many X-ray measurements taken from different angles to produce cross-sectional (tomographic) images (virtual 'slices') of specific areas of a scanned object, allowing the user to see inside the object without cutting.

Procedure

The procedure for a helical computed tomography scan is similar to that of a standard CT scan. The patient lies on a table that slides into the center of the CT scanner. Once inside the scanner, the machine's x-ray beam rotates around the body. This differs from a standard CT scan, in which the x-ray beam does not rotate. The rotation of the x-ray beam allows for better imaging of the body, as it can capture images from multiple angles.

Applications

Helical computed tomography has many medical applications. It is often used to detect and diagnose conditions such as cancer, heart disease, and lung disease. It can also be used to monitor the progress of diseases and the effectiveness of treatments. In addition, it can be used to guide procedures such as biopsies and radiation therapy.

Risks

Like all medical procedures, helical computed tomography carries some risks. These include exposure to radiation, allergic reactions to contrast materials, and potential harm to unborn babies. However, the benefits of this procedure often outweigh the risks, especially when it is used to detect serious conditions such as cancer.

See also

• Computed tomography
• Radiology
• X-ray

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