Feasibility of ultra-low-dose CT combined with advanced modeling iterative reconstruction algorithm for tuberculosis screening in adults
10.19745/j.1003-8868.2024074
- VernacularTitle:超低剂量CT联合高级建模迭代重建算法在成人肺结核检查中的可行性研究
- Author:
Yi JIANG
1
;
Li-Xin QIN
Author Information
1. 武汉市肺科医院放射科,武汉 430030
- Keywords:
ultra-low-dose CT;
advanced modeling iterative reconstruction;
iterative algorithm;
tuberculosis;
energy spec-trum purification technique
- From:
Chinese Medical Equipment Journal
2024;45(4):74-77
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the feasibility of the ultra-low-dose CT energy spectrum purification technique combined with the advanced modeling iterative reconstruction(ADMIRE)algorithm for adult tuberculosis screening.Methods Totally 120 patients with secondary tuberculosis(typeⅢ)admitted to some hospital from May to December 2022 were selected and divided into groups A,B,C,and D with a random number table,with 30 patients in each group.Group A underwent conventional dose scanning with a tube voltage of 120 kV,a tube current of 110 mAs and was treated with the filtered back projection reconstruction algorithm;group B went through low-dose scanning with a tube voltage of 120 kV and a tube current of 70 mAs,and was treated with ADMIRE algorithm(level 3);group C was exposed to low-dose scanning with a low tube voltage of 100 kV and a tube current of 110 mAs,and was treated with the ADMIRE algorithm(level 3);group D was subjected to ultra-low-dose scanning with a tube voltage of Snl00 kV and a tube current of 110 mAs,and treated with the ADMIRE algorithm(level 3).The four groups were compared in terms of effective dose(ED),image subjective score and objective evaluation index and etc.SPSS 17.0 software was used for data processing.Results The differences between the four groups were statistically significant in ED value and subjective score,signal-to-noise ratio(SNR)and contrast noise ratio(CNR)of mediastinal window images(P＜0.05),while not in subjective score,SNR and CNR of lung window images(P＞0.05).Conclusion The ultra-low-dose CT energy spectrum purification technique combined with the ADMIRE algorithm reduces the radiation dose in the examination of adult tuberculosis patients while the image quality meets the clinical diagnostic requirements.[Chinese Medical Equipment Journal,2024,45(4):74-77]
