评价不同分辨率的单色液晶显示器对肺纹理显示质量的影响

Evaluation the Visualization Quality of Lung Markings on Monochrome LCDs with Different Resolutions

目的:评价不同分辨率的医用单色液晶显示器对肺纹理显示质量的影响,探讨放射科诊断显示器的合理配置方案。方法:请放射科高、中、低年资医师各3名,分别在3种不同分辨率的显示器上对93幅胸部DR影像图集中3次独立读图,对右肺中上野纹理显示质量的优劣采用3等分法:优、良和差,每位医师分别针对每台显示器上的每幅图像给出自己的信任等级。采用SPSS13.0对结果进行统计分析。结果:各同年资的医师在不同分辨率的显示器上对肺纹理显示质量的观测结果比较差异无统计学意义(P>0.05);不同年资的医师在2MP或3MP显示器上对肺纹理显示质量的观测结果比较差异无统计学意义(P>0.05),而在5MP显示器上高和中、高和低年资医师之间比较存在显著性差异(P为0.004、0.035,均<0.05),中和低年资医师之间比较差异无统计学意义。结论:高年资医师在5MP显示器上能得到更多的信息;可采用低、中、高分辨率显示器相结合的诊断工作站系统,高年资的医师应使用高分辨率的显示器来完成终审,而中、低年资医师应在中或低分辨率的显示器上完成初审;通过不同分辨率的显示器和不同年资的医师之间的合理配置,可以获得较好的性价比。

Purpose To evaluate the influence of medical monochrome LCDs with different resolutions on the presentation of lung markings. Materials and Method Three radiologist on high-,mid-and lower-experienced level interpreted 93 chest images on three types of displays with different resolutions. The observation was focused the lung markings of superior-middle field in the right lung. All observers rated their confidence of the visual quality of lung markings with three-point scale：excellent,fine and inferior. Software SPSS 13.0 was used to analyze the interpreting results Result：For the visualization of lung markings,there was no significant difference on different displays used by the same experienced radiologist （P0.05）. There was no significant difference among radiologists with different experience using either 2MP or 3MP display. However,on 5MP display,the difference was significant between lower-and high-experienced radiologists and between mid-and high-experienced radiologists,where t=2.99 and 2.11,respectively,and P0.05. But there was no significant difference between mid-and lower-experienced radiologists. Conclusion High-experienced radiologist can get more information on high resolution display as 5MP. Mid-and lower-experienced had same performance in interpreting the lung markings on the displays with same middle or lower resolutions.