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Evaluation of ovarian radiation dose from internally scattered x-rays in Posteroanterior (PA) chest radiography with and without contact gonad shielding: phantom study

Background: Scattered radiation originating from the patient's body disperses unevenly in multiple directions, posing a risk of incidental exposure to radiosensitive organs, such as the ovaries, which may absorb radiation from internally scattered X-rays. Although external radiation shielding i...

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Main Authors: Mat Lazin, Siti Nur Atiqa, Sayed, Inayatullah Shah
Format: Article
Language:English
Published: International Islamic University Malaysia 2024
Subjects:
QC Physics
Online Access:http://irep.iium.edu.my/117568/1/117568_Evaluation%20of%20Ovarian%20Radiation%20Dose.pdf
http://irep.iium.edu.my/117568/
https://journals.iium.edu.my/ijahs/index.php/IJAHS/article/view/996
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spelling my.iium.irep.1175682024-12-30T06:53:06Z http://irep.iium.edu.my/117568/ Evaluation of ovarian radiation dose from internally scattered x-rays in Posteroanterior (PA) chest radiography with and without contact gonad shielding: phantom study Mat Lazin, Siti Nur Atiqa Sayed, Inayatullah Shah QC Physics Background: Scattered radiation originating from the patient's body disperses unevenly in multiple directions, posing a risk of incidental exposure to radiosensitive organs, such as the ovaries, which may absorb radiation from internally scattered X-rays. Although external radiation shielding is a common practice, internal scatter from within the patient presents additional complexities. This study aimed to quantify the radiation dose received by the ovaries using optically stimulated luminescence dosimeters (OSLDs) in posteroanterior (PA) chest X-ray examinations, both with and without the application of a contact gonad shield. Methods: A Siemens Multix Top X-ray imaging system was utilized for this study, operating with tube voltages between 70 kVp and 100 kVp and employing Automatic Exposure Control (AEC). The source-to-image distance (SID) was consistently maintained at 180 cm. The entrance skin dose (ESD) measurements corresponding to the ovaries were conducted using nanoDot OSLDs. These were positioned within the RANDO phantom at slice 29 to align with the anatomical location of the ovaries. Measurements taken with and without the use of a contact gonad shield. Results: The recorded ovarian ESD with contact gonad shielding averaged 2.2, 2.4, 3.7, and 3.0 mGy at 70, 80, 90, and 100 kVp, respectively. In contrast, without contact gonad shielding, the average ovarian ESD observed at 1.0, 1.8, 2.6, and 3.1 mGy at the respective tube voltages. Radiation dose (ESD) by each ovary varied based on the kVp and the use of contact gonad shielding. Results indicated an unexpected increase in ovarian dose with the use of a contact gonad shield, and a consistent rise in ESD noted with increasing kVp, irrespective of shielding. Conclusion: Scatter radiation in radiography presents a risk to organs beyond the primary imaging area, particularly the ovaries in posteroanterior (PA) chest radiography. Research indicates that higher tube potentials result in increased ESD to the ovaries. Interestingly, contact gonad shielding, a conventional method to reduce exposure, may not significantly lower radiation exposures and could potentially increase dose to ovaries. Therefore, discontinuing contact gonad shields seems justifiable for radiation safety. Optimization of tube voltage and tight collimation are crucial for minimizing ovarian radiation exposure. International Islamic University Malaysia 2024-12-27 Article PeerReviewed application/pdf en http://irep.iium.edu.my/117568/1/117568_Evaluation%20of%20Ovarian%20Radiation%20Dose.pdf Mat Lazin, Siti Nur Atiqa and Sayed, Inayatullah Shah (2024) Evaluation of ovarian radiation dose from internally scattered x-rays in Posteroanterior (PA) chest radiography with and without contact gonad shielding: phantom study. International Journal of Allied Health Sciences, 8 (5). pp. 104-111. E-ISSN 2600-8491 https://journals.iium.edu.my/ijahs/index.php/IJAHS/article/view/996
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
topic QC Physics
spellingShingle QC Physics
Mat Lazin, Siti Nur Atiqa
Sayed, Inayatullah Shah
Evaluation of ovarian radiation dose from internally scattered x-rays in Posteroanterior (PA) chest radiography with and without contact gonad shielding: phantom study
description Background: Scattered radiation originating from the patient's body disperses unevenly in multiple directions, posing a risk of incidental exposure to radiosensitive organs, such as the ovaries, which may absorb radiation from internally scattered X-rays. Although external radiation shielding is a common practice, internal scatter from within the patient presents additional complexities. This study aimed to quantify the radiation dose received by the ovaries using optically stimulated luminescence dosimeters (OSLDs) in posteroanterior (PA) chest X-ray examinations, both with and without the application of a contact gonad shield. Methods: A Siemens Multix Top X-ray imaging system was utilized for this study, operating with tube voltages between 70 kVp and 100 kVp and employing Automatic Exposure Control (AEC). The source-to-image distance (SID) was consistently maintained at 180 cm. The entrance skin dose (ESD) measurements corresponding to the ovaries were conducted using nanoDot OSLDs. These were positioned within the RANDO phantom at slice 29 to align with the anatomical location of the ovaries. Measurements taken with and without the use of a contact gonad shield. Results: The recorded ovarian ESD with contact gonad shielding averaged 2.2, 2.4, 3.7, and 3.0 mGy at 70, 80, 90, and 100 kVp, respectively. In contrast, without contact gonad shielding, the average ovarian ESD observed at 1.0, 1.8, 2.6, and 3.1 mGy at the respective tube voltages. Radiation dose (ESD) by each ovary varied based on the kVp and the use of contact gonad shielding. Results indicated an unexpected increase in ovarian dose with the use of a contact gonad shield, and a consistent rise in ESD noted with increasing kVp, irrespective of shielding. Conclusion: Scatter radiation in radiography presents a risk to organs beyond the primary imaging area, particularly the ovaries in posteroanterior (PA) chest radiography. Research indicates that higher tube potentials result in increased ESD to the ovaries. Interestingly, contact gonad shielding, a conventional method to reduce exposure, may not significantly lower radiation exposures and could potentially increase dose to ovaries. Therefore, discontinuing contact gonad shields seems justifiable for radiation safety. Optimization of tube voltage and tight collimation are crucial for minimizing ovarian radiation exposure.
format Article
author Mat Lazin, Siti Nur Atiqa
Sayed, Inayatullah Shah
author_facet Mat Lazin, Siti Nur Atiqa
Sayed, Inayatullah Shah
author_sort Mat Lazin, Siti Nur Atiqa
title Evaluation of ovarian radiation dose from internally scattered x-rays in Posteroanterior (PA) chest radiography with and without contact gonad shielding: phantom study
title_short Evaluation of ovarian radiation dose from internally scattered x-rays in Posteroanterior (PA) chest radiography with and without contact gonad shielding: phantom study
title_full Evaluation of ovarian radiation dose from internally scattered x-rays in Posteroanterior (PA) chest radiography with and without contact gonad shielding: phantom study
title_fullStr Evaluation of ovarian radiation dose from internally scattered x-rays in Posteroanterior (PA) chest radiography with and without contact gonad shielding: phantom study
title_full_unstemmed Evaluation of ovarian radiation dose from internally scattered x-rays in Posteroanterior (PA) chest radiography with and without contact gonad shielding: phantom study
title_sort evaluation of ovarian radiation dose from internally scattered x-rays in posteroanterior (pa) chest radiography with and without contact gonad shielding: phantom study
publisher International Islamic University Malaysia
publishDate 2024
url http://irep.iium.edu.my/117568/1/117568_Evaluation%20of%20Ovarian%20Radiation%20Dose.pdf
http://irep.iium.edu.my/117568/
https://journals.iium.edu.my/ijahs/index.php/IJAHS/article/view/996
_version_ 1819909430462906368
score 13.223943

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