Subtraction improves the accuracy of coronary CT angiography for detecting obstructive disease in severely calcified segments

ConclusionsCCTA with subtraction information achieved better diagnostic accuracy in cases of severe calcification (circumferential extent ≥ 180°). However, for non-severe calcification (circumferential extent< 180 °), the effect of calcium subtraction was unclear, as it did not improve diagnostic accuracy.Key Points• Subtraction coronary CT angiography achieves better diagnostic accuracy, higher diagnostic confidence, and increased interobserver agreement for severe calcification (circumferential extent ≥ 180°).• Calcium subtraction does not improve the diagnostic accuracy of coronary CT angiography for calcification with a circumferential extent of< 180 °.
Source: European Radiology - Category: Radiology Source Type: research