Title: The effect of high kilovoltage technology on absorbed X-ray dose of subject and image quality in computed radiography
Abstract:Objective To explore the effect of high kilovoltage technology on absorbed X-ray dose of examined subjects and image quality in computed radiography(CR).Methods A total of 32 examined subjects were di...Objective To explore the effect of high kilovoltage technology on absorbed X-ray dose of examined subjects and image quality in computed radiography(CR).Methods A total of 32 examined subjects were divided into research group and control group(n=16 each).High kilovoltage(120 kV)radiography was adopted in research group,and general kilovoltage(60~80 kV)radiography was adopted in control group.The chest radiography was taken using Kodak DirectView CR 975 system,and absorbent X-ray dose of examined subject was detected by thermoluminescence dosimeter.The CR image quality was evaluated blindly by two senior radiologists in a five grade marking system.The images whose grade being greater than 3 were considered clinically acceptable and qualified for diagnosis.Results The absorbed dose of X-ray in research group obviously decreased than that in control group〔(0.22±0.03)vs(0.63±0.18)mGy,P0.05〕.The grade markings of image quality were similar(3.88±0.50 vs 4.19±0.54,P0.05)in radiologists A,and also similar(3.81±0.54 vs 4.12±0.62,P0.05)in radiologists B.Conclusions Compared with general kilovoltage radiography,high kilovoltage radiography has advantages of low radiation dose and high image resolution,therefore absorbed X-ray dose of examined subjects obviously decreases and the image quality can satisfy requirement of diagnosis.Read More
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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