A study of the accuracy and radiation dose of the use of portable X-ray machine for orientation of foreign body in navigation surgery
10.3969/j.issn.1001-3733.2025.01.002
- VernacularTitle:使用便携式X线机在导航手术中定位异物的方法及模型实验
- Author:
Dan MA
1
;
Rui XIE
;
Xin WANG
;
Chen LIU
;
Wei WU
;
Yimin ZHAO
;
Shizhu BAI
Author Information
1. 710032 西安,口颌系统重建与再生全国重点实验室,国家口腔疾病临床医学研究中心,陕西省口腔医学重点实验室,空军军医大学第三附属医院数字化口腔医学中心
- Publication Type:Journal Article
- Keywords:
Surgical navigation systems;
Portable X-ray machines;
Foreign bodies;
Orientation
- From:
Journal of Practical Stomatology
2025;41(1):16-20
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To assess the feasibility and security the orientation of foreign bodies using a portable X-ray machine in computer-aided navigation surgery.Methods:A model with a metallic foreign body was constructed.Under the fluoroscopy of a portable X-ray machine,4 points on 2 straight lines passing through the tip of the foreign body were recorded by the navigation e-quipment,and subsequently,the midpoints of the common perpendicular segments of the 2 lines were calculated as the coordinates of the foreign body(Bilinear Method).2 operators measured the coordinates of the foreign body 10 times and compared the measured coordinates of the foreign body with the actual coordinates of the foreign body in order to analyze the accuracy of the Bilinear Method.Radiation doses to model area and operators at different locations were measured using ionizing radiation detectors.Results:The ac-curacy of the Bilinear Method for measuring foreign body coordinates was(1.98±0.77)mm,and that of the 2 operators was 1.55±0.68 and 2.40±0.36 respectively(P=0.02).The radiation dose was(221.45±50.15)μSv in the model and(4.44±1.35)μSv in the operator's chest.Conclusion:The accuracy of the coordinates of the foreign body intraoperation measured by Bilinear Method meets general clinical needs,and different operators may produce different accuracy.The radiation dose is small.
