Introduction of a New Parameter for Evaluation of Digital Radiography System Performance
عنوان مقاله: Introduction of a New Parameter for Evaluation of Digital Radiography System Performance
شناسه ملی مقاله: JR_JMSI-10-3_006
منتشر شده در در سال 1399
شناسه ملی مقاله: JR_JMSI-10-3_006
منتشر شده در در سال 1399
مشخصات نویسندگان مقاله:
Mohammad Reza Choopani - Student Research Committee, Faculty of Paramedicine, Isfahan University of Medical Sciences
Ali Chaparian - Technology of Radiology Department, Isfahan University of Medical Sciences, Isfahan, Iran
خلاصه مقاله:
Mohammad Reza Choopani - Student Research Committee, Faculty of Paramedicine, Isfahan University of Medical Sciences
Ali Chaparian - Technology of Radiology Department, Isfahan University of Medical Sciences, Isfahan, Iran
Background: The aim of this study was to compare the image quality and radiation doses in various
digital radiography systems using contrast‑detail radiography (CDRAD) phantom. Methods: The
image quality and radiation dose for seven different digital radiography systems were compared
using the CDRAD phantom. Incident air kerma (IAK) values were measured for certain exposure
settings in all digital radiography systems. The images from the CDRAD phantom were evaluated by
three observers. The results were displayed in the form of a contrast‑detail (CD) curve. In addition,
the inverse image quality figure (IQFinv)‑to‑IAK ratios were used for quantitative comparison of
different digital radiography system performance. Results: Results of this study showed that the CD
curves cannot be suitable criterion for determining the performance of digital radiography systems.
For this reason, IQFinv‑to‑radiation dose (IAK) ratios in a fixed radiation condition were used. The
highest performance in terms of producing high‑quality images and low radiation dose was related
to X‑ray unit ۱ and the lowest performance was for X‑ray unit ۵. Conclusion: The ratio of IQFinv
to IAK for performance evaluation of digital radiography systems is an innovation of this study.
A digital radiography system with a higher IQFinv‑to‑IAK ratio is associated with lower patient dose
and better image quality. Therefore, it is recommended to equip the new imaging centers with the
systems that have higher IQFinv‑to‑IAK ratios.
کلمات کلیدی: Contrast detail, contrast‑detail radiography phantom, digital radiography, image quality, radiation dose
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1700103/