泰国制造数字化 X 射线摄影系统的图像质量评价。

Image Quality Evaluation of a Digital Radiography System Made in Thailand.

机构信息

Assistive Technology and Medical Devices Research Center, National Science and Technology Development Agency, Pathum Thani 12120, Thailand.

Department of Radiology, Faculty of Medicine, Thammasat University, Pathum Thani 12120, Thailand.

出版信息

Biomed Res Int. 2021 Nov 16;2021:3102673. doi: 10.1155/2021/3102673. eCollection 2021.

DOI:10.1155/2021/3102673

PMID:34869760

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8635879/

Abstract

BACKGROUND

The National Science and Technology Development Agency (NSTDA) in Thailand researched and prototyped digital radiography systems under the brand name BodiiRay aiming for sustainable development and affordability of medical imaging technology. The image restoration and enhancement were implemented for the systems.

PURPOSE

The image quality of the systems was evaluated using images from phantoms and from healthy volunteers.

METHODS

The survey phantom images from BodiiRay and other two commercial systems using the exposure settings for the chest, the abdomen, and the extremity were evaluated by three experience observers in terms of the high-contrast image resolution, the low-contrast image detectability, and the grayscale differentiation. The volunteer images of the chests, the abdomens, and the extremities from BodiiRay were evaluated by three specialized radiologists based on visual grading on 5-point scaled questionnaires for the anatomy visibility, the image quality satisfaction, and the diagnosis confidence in using the images.

RESULTS

BodiiRay phantom results were similar to those from the commercial systems. The overall performance averaged across the exposure settings showed that BodiiRay was slightly better than Fujifilm FDR Go in the low-contrast detectability ( = 0.033) and in the grayscale differentiation ( = 0.004). It was also slightly better than Siemens YSIO Max in the high-contrast resolution ( = 0.018). The images of chest, pelvis, and hand phantoms illustrated comparable visual quality. For volunteer images, the percentage of the images scored ≥4 ranged from 61% to 99%, 23% to 92%, and 96% to 99% for the chest, abdomen, and extremity images, respectively. The average score ranged from 3.63 to 4.46, 3.18 to 4.21, and 4.41 to 4.51 for the chest, abdomen, and extremity images, respectively.

CONCLUSION

The phantom image results showed the comparability of these systems. The clinical evaluation showed BodiiRay images provided sufficient image qualities for digital radiography of these body parts.

摘要

背景

泰国国家科技发展署（NSTDA）以 BodiiRay 为品牌研发并制作了数字射线系统原型，旨在实现医学影像技术的可持续发展和负担得起的价格。该系统实现了图像恢复和增强。

目的

使用体模和健康志愿者的图像评估系统的图像质量。

方法

使用 BodiiRay 和另外两个商业系统的胸部、腹部和四肢的曝光设置来评估调查体模图像，由三位有经验的观察者评估高对比度图像分辨率、低对比度图像检测能力和灰度区分度。BodiiRay 的胸部、腹部和四肢志愿者图像由三位专业放射科医生根据 5 分制问卷进行视觉分级评估，评估内容为解剖结构可见性、图像质量满意度和使用图像进行诊断的信心。

结果

BodiiRay 体模结果与商业系统相似。跨曝光设置的总体性能平均表明，BodiiRay 在低对比度检测能力（ = 0.033）和灰度区分度（ = 0.004）方面略优于 Fujifilm FDR Go。它在高对比度分辨率（ = 0.018）方面也略优于 Siemens YSIO Max。胸部、骨盆和手部体模图像说明了可比的视觉质量。对于志愿者图像，评分≥4 的图像百分比范围为胸部图像 61%至 99%、腹部图像 23%至 92%、四肢图像 96%至 99%。平均评分为胸部图像 3.63 至 4.46、腹部图像 3.18 至 4.21、四肢图像 4.41 至 4.51。