Development of synthetic static images derived from dynamic chest radiography as substitutes for conventional chest radiographs

IF 2.8 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
D. Nishigake , Y. Yamasaki , H. Hamasaki , N. Mizoguchi , T. Kamitani , K. Sagiyama , T. Hino , K. Takakura , T. Takagi , K. Ishigami
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引用次数: 0

Abstract

Introduction

Dynamic chest radiography (DCR) is a recently emerging radiographic technique that uses a series of low-dose sequential chest radiographs to evaluate lung perfusion and ventilation. However, each image may be of insufficient quality to evaluate chest abnormalities as in conventional chest radiography. We aimed to develop a high-quality synthetic static image (SSI), which was generated from a series of DCR images and compared with the original DCR images and chest radiographs.

Methods

Forty healthy volunteers underwent chest radiography and DCR consecutively. SSIs were generated from the DCR images using super-resolution technology. The image quality of the 40 original DCR images, 40 chest radiographs, and 40 SSIs was compared in random order by three chest radiologists who were blinded to the volunteer data using a visual grading analysis (VGA) 5-point-score (5 criteria, score 1–5).

Results

The total VGA scores in DCRs, chest radiographs, and SSIs were 4.05 ± 0.82, 4.65 ± 0.52, and 4.78 ± 0.43, respectively. All differences among the three groups were statistically significant. Specifically, the VGA scores of the SSIs and chest radiographs were significantly higher than those of the DCR images for all criteria. Notably, the VGA score of the SSIs was significantly higher than that of the chest radiographs, except for criteria 4.

Conclusion

Original DCR images have lower image quality than chest radiographs. SSI technology significantly improves the image quality of DCR, which is comparable to or higher than that of chest radiography.

Implications for practice

Although DCR has lower image quality compared to CR, SSI matches CR quality and can replace it, eliminating the need for additional CR imaging and reducing patient radiation exposure.
从动态胸片衍生的合成静态图像的发展,作为传统胸片的替代品
动态胸片(DCR)是一种新出现的影像学技术,它使用一系列低剂量连续胸片来评估肺灌注和通气。然而,与常规胸片相比,每张图像的质量可能不足以评估胸部异常。我们的目的是建立一个高质量的合成静态图像(SSI),该图像由一系列DCR图像生成,并与原始DCR图像和胸片进行比较。方法40例健康志愿者连续行胸片和DCR检查。使用超分辨率技术从DCR图像生成ssi。三位胸科医生对志愿者数据不了解,采用视觉分级分析(VGA) 5分制(5个标准,1-5分)对40张原始DCR图像、40张胸片和40张ssi图像的图像质量进行随机比较。结果dcr、胸片、ssi的VGA总评分分别为4.05±0.82、4.65±0.52、4.78±0.43。三组间差异均有统计学意义。具体而言,在所有标准中,ssi和胸片的VGA评分明显高于DCR图像。值得注意的是,除标准4外,ssi的VGA评分明显高于胸片。结论原始DCR图像质量低于胸片。SSI技术显著提高了DCR的图像质量,与胸片质量相当或高于胸片质量。尽管与CR相比,DCR的图像质量较低,但SSI与CR质量相当,可以取代CR,从而消除了额外的CR成像需求,减少了患者的辐射暴露。
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来源期刊
Radiography
Radiography RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
CiteScore
4.70
自引率
34.60%
发文量
169
审稿时长
63 days
期刊介绍: Radiography is an International, English language, peer-reviewed journal of diagnostic imaging and radiation therapy. Radiography is the official professional journal of the College of Radiographers and is published quarterly. Radiography aims to publish the highest quality material, both clinical and scientific, on all aspects of diagnostic imaging and radiation therapy and oncology.
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