Wirana Angthong MD, Presenter: Nothing to Disclose

Panitpong Maroongroge, Abstract Co-Author: Nothing to Disclose

Vithya Varavithya, Abstract Co-Author: Nothing to Disclose

The purpose of this exhibit is: To review the general concepts of radiation exposure To describe body CT dose report and parameters pertinent to radiation dose To explain the appropriate selection of scan parameters to minimize radiation exposure while maintaining image quality. To discuss a practical approach to optimizing specific CT protocols with iterative reconstruction technique in current clinical practice

General concepts of radiation exposures Absorbed dose Effective dose Nomenclature of CT parameters and issues pertinent to radiation dose Tube current (mA): fixed tube current or automatic exposure control Tube peak kilovoltage (kVp) Beam pitch, beam collimation Reconstruction algorithms: filter back projection versus iterative reconstruction CT dose report CT dose index volume Dose length product Optimization of CT parameter for dose reduction Feasibility of iterative reconstruction technique in modified low dose body CT Low tube voltage and contrast agent dose reduction in CT chest/ abdomen/ pelvis and CT angiography Screening noncontrast CT lung nodule protocol Renal stone protocol Acute abdomen protocol for acute appendicitis  

http://abstract.rsna.org/uploads/2014/14001080/14001080_6pbl.pdf

Angthong, W, Maroongroge, P, Varavithya, V, Strategies for Reduction of Radiation Dose in Body CT with Iterative Reconstruction Technique.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14001080.html