Dose reduction strategies for electrocardiography gated multislice spiral computed tomography of the heart
      Multislice spiral computed tomography (CT) scanning of the heart with retrospective electrocardiographic (ECG) gating has proven superior spatial resolution and reproducibility compared with ECG-triggered sequential acquisition. However, highly overlapping ECG-gated spiral scans of the heart require increased radiation exposure. We evaluated the clinically effective dose for coronary calcium scoring and coronary CT angiography (CTA), both for ECG gating and ECG triggering. New approaches to minimize radiation exposure were investigated.
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