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International Journal of Radiation Research، جلد ۱۹، شماره ۱، صفحات ۲۲۳-۲۳۰
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Assessment of dose reduction and influence of gantry rotation time in CT abdomen examinations |
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| چکیده انگلیسی مقاله |
Background: Worldwide the computed tomography (CT) scanning is recognized as a high radiation dose modality. This article aimed to estimate the radiation dose reduction and radiogenic risks for adult patients undertaking abdominal CT examinations. Materials and Methods: A total of 128 patients were studied using 2, 4, 16 and 64 slice CT scanners. The patients were divided into two categories: the first category as control category (80 patients), and the other as optimisation category (48 patients). The optimisation protocol was based on decreasing the gantry rotation time. Results: In general, the faster gantry rotation times (0.7 s/rot and 0.5 s/rot) resulted in dose reduction while maintaining images noise within the acceptable range. After dose optimization, the overall cancer risk was reduced by 21%, 49%, 29%, and 16%, for the patients undergoing abdominal examinations on 2, 4, 16 and 64 slice CT scanners, respectively. Conclusion: The patient dose optimisation during CT abdomen was investigated. By lowering gantry rotation time, a radiation dose reduction of up to 30 % was achieved without compromising the diagnostic findings. Accordingly, the attention of all technologists necessary to take advantage of the dose reduction methods reported in this study. |
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| کلیدواژه‌های انگلیسی مقاله |
Dose reduction, CT, virtual dose, abdomen. |
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| نویسندگان مقاله |
| M.K. Saeed
Department of Radiological Sciences, Najran University, Najran, Saudi Arabia
| N. Tammam
Physics Department, College of Sciences, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| A. Sulieman
Radiology and Medical Imaging Department, Prince Sattam bin Abdulaziz University, Alkharj, Saudi Arabia
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| نشانی اینترنتی |
http://ijrr.com/browse.php?a_code=A-10-2055-105&slc_lang=en&sid=1 |
| فایل مقاله |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
Medical Physics |
| نوع مقاله منتشر شده |
تحقیق بدیع |
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