Patient radiation dose of spine X-ray panoramic imaging: Comparison of two techniques based on Monte Carlo mathematical model
10.3760/cma.j.issn.0254-5098.2015.10.019
- VernacularTitle:基于蒙特卡罗数学模型两种脊柱全景X射线成像技术受检者辐射剂量的对比研究
- Author:
Rui JIN
;
Yongming ZENG
;
Xianfan LIU
- Publication Type:Journal Article
- Keywords:
Spine;
X-ray radiography;
X-ray panoramic imaging;
Effective dose;
Mathematical model
- From:
Chinese Journal of Radiological Medicine and Protection
2015;35(10):792-796
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare patient radiation dose of two techniques of spine X-ray panoramic imaging under the same image quality.Methods An anthropomorphic phantom was used.The reasonable imaging parameters were found for spine panoramic radiography using Sonialvision safire17 Slot scan with HQ mode.And the panoramic films were obtained with different parameters using GE XR650 DR system.The panoramic images were scored by three experienced radiologists.The imaging parameters with the same score in groups were input into PCXMC 2.0 software to get effective dose(E) and organ dose.Results The reasonable imaging parameters of Slot scan were high quality(HQ) mode, SID 150 cm, 100 kVp, and 2 mAs;and the corresponding parameters of XR650 were SID 200 cm, 100 kVp, and 3.2 mAs.The E of the Slot scan with HQ mode, XR650 with manual mode and XR650 with AEC mode was(0.118 7±0.001 4),(0.0847±0.0008), and (0.1580±0.001 5) mSvrespectively, while the E of XR650 with manual mode was lower than the others(F =3 007.293, P ＜0.05).The organ dose using XR650 DR with manual mode were lower than that using Slot scan with HQ mode in all samples except breasts(P ＜0.05);the organ dose using XR650 DR with AEC mode were higher than that using XR650 DR with manual mode and Slot scan with HQ mode for all samples except for thyroid, oesophagus and lungs (P ＜0.05).Conclusions The radiation doses of both spine X-ray panoramic imaging with manual mode are low, and low dose spine X-ray panoramic imaging can be achieved if reasonable parameters are used.
