Multi Detector Row CT에서 관상동맥 석회화 측정시 영향 인자에 관한 연구

Study on Affecting Factors in Measuring the Calcification of Coronary Artery in MDCT

Purpose There are change of calcification amount by many factors in calcium scoring. This study is to ascertain the change and to improve the accuracy on those in the multi-detector row computed tomography(MDCT). Materials and Methods The MDCT(Somatom sensation 16, Siemens Erlangen, Gennany) was used for this study. The volume, mass, and score were measured according to change including DFOV(200, 250, 300mm), overlapping reconstruction rates (0, 25, 50%), and slice width (2, 3, 5mm). Results The volume, mass, and score according to change of DFOV were increased 0.3-5.0%, 0.8-20.0%, and 1.4-4.0%, respectively. The volume, mass, and score according to change of overlapping reconstruction rates were increased 0.4-24.0%, 0.8- 9.0%, and 3.0-45.0%, respectively. The volume, mass, and score according to change of slice width were also increased 1.0-48.0%, 12.0-41.0%, and 21.0-48.0%, respectively. Conclusion There were change in all DFOV, overlapping reconstruction rates, and slice width The calcium score m danger group can change, therefore, it is necessary that standard for the study is established.