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New CT scan method lowers radiation exposure

New CT scan method lowers radiation exposure, Science Daily 

Date:  July 23, 2020

Source:  University College London

Summary:

A CT scan technique that splits a full X-ray beam into thin beamlets can deliver the same quality of image at a much reduced radiation dose, according to a new study. The technique, demonstrated on a small sample in a micro CT scanner, could potentially be adapted for medical scanners and used to reduce the amount of radiation millions of people are exposed to each year.

A CT scan technique that splits a full X-ray beam into thin beamlets can deliver the same quality of image at a much reduced radiation dose, according to a new UCL study.

The technique, demonstrated on a small sample in a micro CT scanner, could potentially be adapted for medical scanners and used to reduce the amount of radiation millions of people are exposed to each year.

A computerised tomography (CT) scan is a form of X-ray that creates very accurate cross-sectional views of the inside of the body. It is used to guide treatments and diagnose cancers and other diseases.

Past studies have suggested CT scans may cause a small increase in lifelong cancer risk because their high-energy wavelengths can damage DNA. Although cells repair this damage, sometimes these repairs are imperfect, leading to DNA mutations in later years……… https://www.sciencedaily.com/

July 25, 2020 - Posted by Christina Macpherson | radiation, USA