Coronary computed tomography angiography with a consistent dose below 1 mSv using prospectively electrocardiogram-triggered high-pitch spiral acquisition
Key result
High-pitch spiral coronary CTA yields excellent image quality in ~94% of segments at sub-millisievert radiation.
- n=50
Why the study?
Does prospectively ECG-triggered high-pitch spiral coronary CTA provide excellent image quality at an effective dose below 1 mSv in non-obese patients with a low and stable heart rate?
Population
50 consecutive patients with body weight ≤100 kg and sinus rhythm ≤60 b.p.m. after pre-medication
Design
Cohort
Authors
Discussion
Loading...
Member takes
Implication
Prospectively ECG-triggered high-pitch spiral coronary CTA is feasible and provides excellent image quality at a sub-millisievert radiation dose in selected patients with low heart rates and body weight ≤100 kg.
Study Design
Type
Observational (n=50)
Structured PICO
Does prospectively ECG-triggered high-pitch spiral coronary CTA provide excellent image quality at an effective dose below 1 mSv in non-obese patients with a low and stable heart rate?
P
Population
50 consecutive patients with body weight ≤ 100 kg and sinus rhythm ≤60 b.p.m. undergoing coronary CTA.
E
Exposure
Prospectively ECG-triggered high-pitch spiral coronary computed tomography angiography (CTA) using a dual-source CT system (2 x 128 x 0.6 mm collimation, 0.28 s rotation time, pitch 3.2 or 3.4, 100 kV tube voltage, 320 mA s)
O
Outcome
Feasibility and image quality evaluated using a four-point scale (1 = absence of any artefacts to 4 = uninterpretable)surrogate
Prospectively ECG-triggered high-pitch spiral coronary CTA is feasible and provides excellent image quality at a sub-millisievert radiation dose in selected patients with low heart rates and body weight ≤100 kg.
Cite This Study
Achenbach et al. (2009) conducted an observational in Coronary computed tomography angiography (CTA) (n=50). Prospectively ECG-triggered high-pitch spiral coronary CTA was evaluated on Image quality and effective dose. Prospectively ECG-triggered high-pitch spiral coronary CTA provided excellent image quality (94% of segments scored 1) at a mean effective dose of 0.87 mSv.