80 kVp with deep learning reconstruction lowers radiation and contrast dose in overweight patients undergoing coronary CT angiography

80 kVp coronary CT angiography with deep learning reconstruction reduced radiation dose from 4.46 to 2.85 mSv and contrast dose from 43.64 to 34.62 mL in overweight patients while improving image quality.

• Radiation dose was 2.85 ± 0.46 mSv with 80 kVp/DLIR-H vs 4.46 ± 0.69 mSv with 100 kVp/ASIR-V50% (p<0.001).
• Contrast agent dose was 34.62 ± 2.05 mL vs 43.64 ± 1.91 mL (p<0.001).
• Image noise was lower (15.46 vs 21.60 HU) and SNR/CNR were significantly better in the 80 kVp group.

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