Evaluation on the Effect of FIRST on Head and Neck CTA Image Quality at 100 kVp
LU Xiaoping1，WANG Yun1，XU Min2，MA Zhuangfei2，WANG Yanling1，FU Haihong1，CHEN Yu1，JIN Zhengyu1
1. Department of Radiology, Peking Union Medical College Hospital, Beijing 100730, China丨
2. Canon Medical System (China) Co., Ltd., Beijing 100015, China
Abstract：Objective To evaluate the effect of forward projected model-based iterative reconstruction solution (FIRST) on head and
neck CTA image quality at 100 kVp. Methods Thirty-three patients undergoing head and neck CTA were analyzed. Three sets of
images were reconstructed from the raw data, which were filtered back projection (FBP), adaptive iterative dose reduction 3D (AIDR-
3D) and FIRST. The effect of different reconstruction modes in head and neck CTA image quality from both objective measurement
and subjective scoring were evaluated. Results Objective measurement: CT values of aortic arch were statistically different among
the three sets’ images (P<0.001), while there was no significant difference in other parts (P>0.05). The SD value, signal to noise ratio
and noise ratio of the three sets were statistically different in each blood vessel (P<0.05). Subjective scoring: Different reconstructed
images of the three sets could meet the diagnostic requirements. There was no statistical difference between the scores of the FBP
group and the AIDR-3D group (P>0.05), and the scores of the FIRST group were statistically different from those of the FBP group
and THE AIDR-3D group (P<0.05). Conclusion In terms of image quality of head and neck CTA examination, compared with FBP
and AIDR-3D reconstruction algorithms, FIRST can significantly reduce image noise and improve image signal to noise ratio. FIRST
has better performance on displaying small intracranial blood vessels. It can be used in clinical examination.
陆晓平1，王沄1，徐敏2，马壮飞2，王彦玲1，付海鸿1，陈钰1，金征宇1. 100 kVp条件下全模型迭代技术对头颈CTA图像质量的影响[J]. 中国医疗设备, 2021, 36(10): 80-83.
LU Xiaoping1，WANG Yun1，XU Min2，MA Zhuangfei2，WANG Yanling1，FU Haihong1，CHEN Yu1，JIN Zhengyu1. Evaluation on the Effect of FIRST on Head and Neck CTA Image Quality at 100 kVp. China Medical Devices, 2021, 36(10): 80-83.
