Table 1.
Baseline data of patients.
Fig 1.
The axial image of CCTA in subgroup A1.
Sixty-one years old, female, 65 kg. Injection speed of 5.1 ml/s and injection volume of 61 ml. CT values in target vessels are as following: AO = 414.08HU, LMA = 397.76HU, LAD = 376.52HU, LCX = 358.03HU.
Fig 2.
The axial image of CCTA in subgroup A2.
Sixty-nine years old, male, 81 kg. Injection speed of 5.9 ml/s and injection volume of 71 ml. CT values in target vessels areas following: AO = 400.24HU, LMA = 389.13HU, LAD = 367.88HU, LCX = 354.84HU.
Fig 3.
The axial image of CCTA in subgroup A3.
Fifty-two years old, male, 90 kg. Injection speed of 6.0 ml/s and injection volume of 72 ml. CT values in target vessels areas following: AO = 410.44HU, LMA = 385.42HU, LAD = 379.86HU, LCX = 349.74HU.
Fig 4.
The axial image of CCTA in subgroup A4.
Fifty-eight years old, male, 76 kg. Injection speed of 4.8 ml/s and injection volume of 58 ml. CT values in target vessels are as following: AO = 401.62HU, LMA = 391.23HU, LAD = 353.88HU, LCX = 343.98HU.
Fig 5.
The axial image of CCTA in subgroup B1.
Fifty-five years old, male, 76kg. CT values in target vessels are as following: AO = 321.23HU, LMA = 311.59HU, LAD = 298.32HU, LCX = 285.01HU.
Fig 6.
The axial image of CCTA in subgroup B2.
Fifty-two years old, male, 75kg. CT values in target vessels are as following: AO = 388.12HU, LMA = 359.05HU, LAD = 339.61HU, LCX = 323.09HU.
Fig 7.
The axial image of CCTA in subgroup B3.
Fifty-six years old, male,74kg. CT values in target vessels are as following: AO = 412.71HU, LMA = 380.02HU, LAD = 372.23HU, LCX = 349.72HU.
Fig 8.
The axial image of CCTA in subgroup B4.
Fifty-four years old, male, 75kg. CT values in target vessels areas following: AO = 473.45HU, LMA = 469.20HU, LAD = 455.17HU, LCX = 443.72HU.
Table 2.
Comparison of the enhancement degree in target vessels among sub-groups with different concentrations of CM in group A.
Table 3.
Comparison of the enhancement degree in target vessels among sub-groups with different concentrations of contrast medium in group B.
Fig 9.
Comparison of CV for CT attenuation value between group A1/B1(300 mg I/ml).
Fig 10.
Comparison of CV for CT attenuation value between group A2/B2 (320 mg I/ml).
Fig 11.
Comparison of CV for CT attenuation value between group A3/B3 (350 mg I/ml).
Fig 12.
Comparison of CV for CT attenuation value between group A4/B4 (370 mg I/ml).
Table 4.
Comparison of vessel enhancement degree of coronary arteries among sub-groups with different body weights in group A.