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中国医疗设备  2021, Vol. 36 Issue (10): 153-156    DOI: 10.3969/j.issn.1674-1633.2021.10.035
  专论 本期目录 | 过刊浏览 | 高级检索 |
可变剂量狭缝拼接摄影技术在下肢全长摄影中的应用
徐晶1,夏秀杰1,苗桂娟1,孔艳1,王忠周2
1. 济宁市第一人民医院 影像科,山东 济宁 272000丨 2. 山东第一医科大学第一附属医院(山东省千佛山医院)放射科,山东 济南 250014
Feasibility Study of Variable Dose Slit in Full-Length Imaging Technology for Lower Limb
XU Jing1,XIA Xiujie1,MIAO Guijuan1,KONG Yan1,WANG Zhongzhou2
Objective To explore the application value of variable dose (VD) in full-length imaging technology for lower limb. Methods A total of 80 patients who underwent full-length imaging of lower limbs from January to April 2021 were selected. According to the dose mode, subjects were divided into study group A and control group B with 40 people in each group. Panoramic imaging technology was performed in group A and group B with VD mode and constant dose mode, respectively. 20 people in group A were randomly selected for ordinary slit splice imaging technology (A1) and high-definition slit splice imaging technology (A2), and 20 people in group B were selected for ordinary slit splice imaging technology (B1) and high-definition slit splice imaging technology (B2), respectively. The image quality was evaluated by three-point method. Total dose area product (DAP) and total air specific release kinetic energy (AK) were recorded, and the mean values of each group of data were compared. The image quality and radiation dose of each group were compared. Results The difference of total DAP between A1 and B1 groups was statistically significant (P<0.05), and the difference of total AK between A1 and B1 groups was statistically significant (P<0.05). The difference of total DAP between A2 and B2 groups was statistically significant (P<0.05), and the difference of total AK between A2 and B2 groups was statistically significant (P<0.05). There was no statistically significant difference in the image quality scores between A1/ B1 and A2/B2 (P>0.05). Conclusion The VD slit splice technique can reduce the radiation dose of patients when the image quality has no obvious difference. It has the value of clinical application and promotion.
 
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