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Methods and results : The suspected patient who have results of CTA and CAG examinations to evaluate coronary stenose to undergo each 16MD CT(n=93) and dual source CT(n=100). As a results of statistic, the highest rank of sensitivity, specificity, PPV, NPV and accuracy in coronary artery with using 16MDCT was displayed in LAD(73.5%), RCA(74.5%), LAD(66.7%), LCX(75%), LCX( 67.7%). The mean diagnostic accuracy of dual source CT was more 17% than 16MDCT. Dual source CT was recorded 84% mean of accuracy. In addition to, segments of coronary artery did not show significa nt differences in all of them. However, distal segment become more and more accurate than proximal site. Key Words : CTA, CAG, Accuracy  16MD CT(n=93) and dual source CT(n=100)     CT                  .   16MDCT    , , ,  LAD(73.5%), RCA(74.5%), LAD(66.7%), LCX(75%), LCX(67.7%) , 16Slice MDCT     67%    , Somatom Definition dual source CT     84% 16Slice MDCT 17%   . (segaments)  16Slice MDCT Somatom Definition  (proximal)      .     10%          .  Dual source CT         .

Evaluate the diagnostic accuracy in the assessment of coronary artery stenoses using MDCT