Abstract：Objective: To observe the evaluation of the image quality of low-contrast head and neck CTA vascular scanning by two different triggering Methods: Test-Bolus and Bolus-Tracking. Methods: A total of 100 cases of head and neck CTA images completed in our department from November 2022 to March 2023 were randomly selected. Among them, Group A comprised 50 cases using the test-bolus method, and Group B comprised 50 cases using the bolus-tracking method. A retrospective analysis was performed to assess the impact of the two different triggering methods on image quality. Results: In Group A, images obtained using the test-bolus method had an average CT value of (338.06±73.54) HU for the carotid arteries and (323.72±73.13) HU for the cerebral middle arteries, with higher image quality compared to Group B. Group B, using the bolus-tracking method, had an average CT value of (276.82±66.72) HU for the carotid arteries and (270.32±65.39) HU for the cerebral middle arteries, with slightly more venous interference but without affecting diagnosis, and slightly inferior image quality. The objective evaluation of the CT values of the carotid and cerebral middle arteries in Groups A and B showed statistically significant differences (P<0.05). The subjective evaluation of the excellent and good rates between the two groups showed that Group A had a higher excellent rate (70%, 35/50) and a higher excellent and good rate (90%, 45/50) compared to Group B (excellent rate: 40%, 20/50; excellent and good rate: 86%, 43/50), with statistically significant differences (P<0.05) in image quality but not in the excellent and good rate (P>0.05). Conclusion: Both imaging methods can meet diagnostic requirements, but using the test-bolus method for scanning can improve image quality with less venous interference.
赵德春, 余可斌. 256层iCT用不同触发方式对低对比剂头颈血管CTA联合扫描成像图像质量的评价[J]. 河北医学, 2023, 29(12): 2068-2072.
ZHAO Dechun, YU Kebin. Evaluation of Image Quality in Combined Low-Contrast Head and Neck CTA Using Different Triggering Methods with 256-layer iCT. HeBei Med, 2023, 29(12): 2068-2072.
2023, Vol. 29 
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