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مقالات فارسیISIکنفرانسهاژورنالها

Investigation of Eye Lens Dose Estimate based on AAPM Report ۲۹۳ in Head Computed Tomography

محل انتشار: مجله فیزیک و مهندسی پزشکی، دوره: 11، شماره: 5
سال انتشار: 1400
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 47

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لینک ثابت به این مقاله:
https://civilica.com/doc/1892575

شناسه ملی سند علمی:

JR_JBPE-11-5_002

تاریخ نمایه سازی: 30 دی 1402

چکیده مقاله:

Background: Estimation of eye lens dose is important in head computed tomography (CT) examination since the eye lens is a sensitive organ to ionizing radiation. Objective: The purpose of this study is to compare estimations of eye lens dose in head CT examinations using local size-specific dose estimate (SSDE) based on size-conversion factors of the American Association of Physicists in Medicine (AAPM) Report No. ۲۹۳ with those based on size-conversion factors of the AAPM Report No. ۲۲۰.Material and Methods: This experimental study is conducted on a group of patients who had undergone nasopharyngeal CT examination. Due to the longitudinal (z-axis) dose fluctuation, the average global SSDE and average local SSDE (i.e. particular slices where the eyes are located) were investigated. All estimates were compared to the measurement results using thermo-luminescent dosimeters (TLDs). The estimated and measured doses were implemented for ۱۴ patients undergoing nasopharyngeal CT examination. Results: It was found that the percentage differences of the volume CT dose index (CTDIvol), average global SSDE based on AAPM No. ۲۲۰ (SSDEo,g), average local SSDE based on AAPM No. ۲۲۰ (SSDEo,l), average global SSDE based on AAPM No. ۲۹۳ (SSDEn,g) and average local SSDE based on AAPM No. ۲۹۳ (SSDEn,l) against the measured TLD doses were ۲۲.۵, ۲۱.۷, ۱۵.۰, ۹.۳, and ۲.۱%, respectively. All comparisons between dose estimates and TLD measurements gave p -values less than ۰.۰۰۱, except for SSDEn,l (p -value = ۰.۵۶۶). Conclusion: SSDE based on AAPM Report No. ۲۹۳ can be used to accurately estimate eye lens radiation doses by performing the calculations on a number of specific slices containing the eyes.

کلیدواژه ها:

Radiation ، Ionizing ، X-rays ، Computed Tomography ، Algorithms ، Eye Lens Dose ، Organ Dose ، Size-Specific Dose Estimates

نویسندگان

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PhD, Department of Physics, Faculty of Sciences and Mathematics, Diponegoro University, Jl. Prof. Soedarto SH, Semarang ۵۰۲۷۵, Central Java, Indonesia

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MSc, Department of Physics, Faculty of Sciences and Mathematics, Diponegoro University, Jl. Prof. Soedarto SH, Semarang ۵۰۲۷۵, Central Java, Indonesia

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BSc, Department of Radiology, Prof. Margono Hospital, Purwokerto, Indonesia

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PhD, Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung Jl. Ganesha ۱۰ Bandung ۴۰۱۳۲, Indonesia

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PhD, Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, ۳-۱-۱ Maidashi, Higashi-ku, Fukuoka ۸۱۲-۸۵۸۲, Japan

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PhD, Department of Applied Physics and Medical Imaging, California State University Channel Islands, Camarillo, CA ۹۳۰۱۲, USA

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