Feasibility of low tube voltage scanning technology in CT-guided cryoablation therapy of liver cancer
10.13929/j.issn.1672-8475.2023.12.013
- VernacularTitle:低管电压扫描技术用于CT引导下冷冻消融治疗肝癌的可行性
- Author:
Weixin WANG
1
;
Pengde GUO
;
Qiuhuan ZHANG
;
Qi LI
;
Jie LI
;
Ming LIU
;
Nan PENG
Author Information
1. 北京中医药大学东方医院放射科,北京 100078
- Keywords:
liver neoplasms;
tomography,X-ray computed;
radiation dosage;
cryosurgery
- From:
Chinese Journal of Interventional Imaging and Therapy
2023;20(12):757-760
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the feasibility of low tube voltage scanning technology in CT-guided cryoablation therapy of liver cancer.Methods Twenty-one patients who underwent routine CT(tube voltage 120 kV)-guided cryoablation of liver cancer(group A)were retrospectively enrolled,while low tube voltage(100 kV)CT-guided cryoablation of liver cancer was prospectively performed in 23 patients(group B).CT scanning were performed before and after ablation with automatic tube current mode(50-450 mA),and adaptive statistical iterative reconstruction(ASIR)algorithm was used for image reconstruction(reconstruction percentages of 40%)of both groups.The subjective scores and objective evaluations of CT image quality before and after treatment were compared between groups,so as the treatment effect and patient's radiation dose(volume CT dose index[CTDIvol]).Results No significant difference of subjective scores,objective evaluations of CT image quality nor treatment effect was detected between groups(all P＞0.05).Before and after treatment,CTDIvol of patients in group A was significantly higher than that in group B(btoh P＜0.001).Conclusion Low tube voltage scanning technology could be used for CT-guided cryoablation of liver cancer,which might ensure image quality without affecting evaluation on cryoablation effect and reduce radiation dose combined with ASIR algorithm.
