RSNA 2011: Iterative reconstruction of low-dose CT angiography reduces radiation dose >50%
Published
01 November 2011
| Article by Excerpta Medica
| Tags:
ct,
reconstruction
RSNA 2011: Iterative reconstruction of low-dose CT angiography reduces radiation dose >50%
The premise that iterative reconstruction of CT scans can reduce radiation dose without diminishing image quality routine screening programs has been supported by a controlled study with more than 100 patients undergoing CT angiography. This technology, which employs computational algorithms to improve image quality, is being actively pursued at many centres for its promise in allowing production of good quality images despite scans acquired with low-dose radiation exposure. In the case of this study, image quality was compared in groups of patients with successively smaller exposures to CT. Although the lowest dose did not permit an acceptable image when compared to scans in the group receiving conventional tube output, the second lowest dose did. The study was conducted with a 256-slice multidetector computed tomography (MDCT) system. The study suggests iterative reconstruction (iDose) is a viable approach to routine care.
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