Objective: to explore the efficacy of low-dose chest CT scanning combined with KARL3D iterative reconstruction technique. Methods: 100 patients who underwent chest CT examination in our hospital were randomly selected...Objective: to explore the efficacy of low-dose chest CT scanning combined with KARL3D iterative reconstruction technique. Methods: 100 patients who underwent chest CT examination in our hospital were randomly selected as the analysis objects and randomly divided into four groups, each with 25 cases. Group A was reconstructed by FBP algorithm and the pipeline current was 150mA;. The low-dose groups B, C and D were reconstructed by Karl algorithm with tube currents of 80mas, 60mas and 40mas respectively. The radiation dose and subjective and objective scores of the four groups were compared. SPSS210 statistical software was used for data analysis. Results: the radiation dose of group B, C and D using low dose tube current combined with karl3d iterative reconstruction technique was lower than that of group a (p < 0.05);The difference between the objective assessment (SD, SNR) and subjective score of the four groups was all p>0.05. Conclusion: The combination of low-dose iterative reconstruction technique and Karl 3D chest CT scan can obtain good images and reduce radiation dose, which is worthy of promotion in the industry.展开更多
文摘Objective: to explore the efficacy of low-dose chest CT scanning combined with KARL3D iterative reconstruction technique. Methods: 100 patients who underwent chest CT examination in our hospital were randomly selected as the analysis objects and randomly divided into four groups, each with 25 cases. Group A was reconstructed by FBP algorithm and the pipeline current was 150mA;. The low-dose groups B, C and D were reconstructed by Karl algorithm with tube currents of 80mas, 60mas and 40mas respectively. The radiation dose and subjective and objective scores of the four groups were compared. SPSS210 statistical software was used for data analysis. Results: the radiation dose of group B, C and D using low dose tube current combined with karl3d iterative reconstruction technique was lower than that of group a (p < 0.05);The difference between the objective assessment (SD, SNR) and subjective score of the four groups was all p>0.05. Conclusion: The combination of low-dose iterative reconstruction technique and Karl 3D chest CT scan can obtain good images and reduce radiation dose, which is worthy of promotion in the industry.
