1) To identify various radiation optimization strategies in CT. 2) To update impact of technological advances on reducing CT dose. 3) To describe ways to optimize CT protocols.
The number of CT examinations performed in the United States has been growing steadily leading to peak of more than 85 million procedures in 2011, but has shown a downward trend (76 million in 2013) in the past two years. Similar trends are observed world wide. The rapid increase in the number of CT procedures, new protocols and the associated radiation dose and risks has drawn considerable attention. It appears that the so-called ‘slice wars’ with regard to the number of slices provided per CT gantry rotation may be reaching a plateau and increasing concerns about radiation dose due to CT examinations are fueling the efforts to reduce radiation dose and has lead to ‘dose wars’. Tube current modulation, iterative reconstruction algorithms, tube voltage reduction and many other strategies will be discussed in this presentation. These and many numbers of radiation dose reduction strategies are enabling users to acquire CT images at a much lower radiation dose. At the same time, efforts to optimize CT protocols are leading further improvement in image quality and image quantifications.
Mahesh, M,
CT Dose Reduction and Clinical Management. Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL.
http://archive.rsna.org/2014/13029346.html
