Research Article

Diagnostic Phase of Calcium Scoring Scan Applied as the Center of Acquisition Window of Coronary Computed Tomography Angiography Improves Image Quality in Minimal Acquisition Window Scan (Target CTA Mode) Using the Second Generation 320-Row CT

Figure 3

Presurgical screening coronary computed tomography angiography (RR interval = 1114 ms) performed in Target CTA mode on a 61-year-old male with a history of aortic valve replacement. Curved multiplanar reconstruction images show the right coronary (a) and left anterior descending arteries (b) with minimal motion artifacts. The diagnostic phase was 68% for calcium scoring scan and 69.1% for coronary computed tomography angiography. The virtual window of 75% exposure was calculated as 70.0–80.4%, which does not include the CCTA diagnostic phase.
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