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学科主题: 临床医学
题名:
Influence of tube voltage on digitized image quality of patients exposed to occupational dust: phantoms and clinical studies
作者: Wang Xiaohua1; Liu Dongsheng2; Xuan Xiao2; Duan Jianghui3; Yuan Huishu1
关键词: phantomsimaging ; pneumoconiosis ; radiography ; digital
刊名: CHINESE MEDICAL JOURNAL
发表日期: 2014-08-20
DOI: 10.3760/cma.j.issn.0366-6999.20140449
卷: 127, 期:16, 页:2940-2944
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Medicine, General & Internal
研究领域[WOS]: General & Internal Medicine
关键词[WOS]: FLAT-PANEL-DETECTOR ; FILM-SCREEN RADIOGRAPHY ; CHEST RADIOGRAPHY ; PNEUMOCONIOSIS CLASSIFICATION ; DIGITAL RADIOGRAPHS ; RECOGNITION ; RELIABILITY
英文摘要:

Background High-voltage analog X-ray examination is a main tool for pneumoconiosis, which is challenged by digital radiography (DR). The tube voltage of DR chest films required for diagnosis and staging of pneumoconiosis is concerned technically. We investigated the influence of the tube voltage on chest X-ray DR image quality of patients exposed to occupational dust.

Methods DR images of the CDRAD2.0model, an anatomical chest phantom, and 136 exposed workers were analyzed at different tube voltages by threereaders. Image quality factors (IQF) were calculated and compared using the CDRAD2.0 model. DR images of ten anatomic positions were scored against those of the high-kilovolt chest films in anatomical phantom and clinical cases, and differences in scores were analyzed.

Results In the CDRAD2.0 model, all three readers had a minimal IQF at 120 kV (mean: 22.25 kV). The differences in the mean IQF of DR images at different tube voltages was significant (F=13.78, P<0.001). The IQF of DR imaging at 120 kV was similar to high kilovolt analog imaging (1=-0.58, P>0.05). In the anatomic phantom and clinical cases, the DR images at 120 kV were closest in anatomical detail to the high kV analog images, and the means were similar (P>0.05).

Conclusions Among different tube voltages, DR image quality is closest to the high kilovolt analog images at 120 kV in patients exposed to occupational dust.

语种: 英语
所属项目编号: 75508-01
项目资助者: Key Project of Clinical Science, Peking University Third Hospital
WOS记录号: WOS:000347491900012
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/61171
Appears in Collections:北京大学第三临床医学院_放射科_期刊论文

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作者单位: 1.Peking Univ, Hlth Sci Ctr, Beijing 100191, Peoples R China
2.Peking Univ, Hosp 3, Dept Radiol, Beijing 100191, Peoples R China
3.Beijing Gen Elect Med Equipment Ltd Co, Dept Xray R&D, Beijing 100176, Peoples R China

Recommended Citation:
Wang Xiaohua,Liu Dongsheng,Xuan Xiao,et al. Influence of tube voltage on digitized image quality of patients exposed to occupational dust: phantoms and clinical studies[J]. CHINESE MEDICAL JOURNAL,2014,127(16):2940-2944.
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