Low-dose CT-guided Hookwire puncture for localization of lung nodules in patients with body mass index≤22 kg/m2 / 中国介入影像与治疗学

ABSTRACT

Objective To explore the feasibility of low-dose CT-guided Hookwire localization of lung nodules in patients with body mass index(BMI)≤22 kg/m2.Methods Totally 53 BMI≤22 kg/m2 patients with 66 lung nodules were prospectively enrolled,CT-guided Hookwire localization of lung nodules were performed.According to the dose of CT scanning,the patients were divided into conventional dose group(group A,25 patients with 32 lung nodules)or low dose group(group B,28 patients with 34 lung nodules),while previous conventional dose CT scanning data of patients in group B were taken as control(group C).The image quality of group A and group B were scored using a 5-point scale,and the displaying of lung nodules in group B and group C were scored using a 3-point scale.The basic information of patients,lung nodules location,type,CT value,the maximum diameter,image quality score,puncture times,complications,as well as volume CT dose index(CTDIvol),dose-length product(DLP)and effective dose(ED)were compared between group A and B,so were score of lung nodules display,the maximum diameter and CT value of nodules between group B and C.Results No significant difference of basic information,the location,type,CT value,the maximum diameter,puncture times of lung nodules nor complications was found between group A and B(all P＞0.05).The quality score of group B(4[3,4])was lower than that of group A(5[4,5])(P＜0.05)but all greater than 3 and met the needs of puncturing.CTDIvol,DLP and ED of group B were lower than those of group A(all P＜0.05).There was no significant difference of the maximum diameter,CT value nor score of lung nodules display between group B and C(all P＞0.05).Conclusion Low-dose CT-guided Hookwire localization of lung nodules was feasible in patients with BMI≤22 kg/m2.