Figure 4From: Demonstration of value of optimizing ECG triggering for cardiovascular magnetic resonance in patients with congenital heart diseaseExamples of vector clouds. Vector clouds of four patients (a-d), the green points are trigger-points, which optimally should be located in the R-loop (like in upper row d). Upper row: new algorithm, lower row: old algorithm. In parenthesis the average grading of the three blinded graders from 1 to 4.Back to article page