Computed Tomography (CT) has been one of the most used exams for radiologic diagnostic in medicine. The increase in CT scans is a global concern due to the increase in radiation doses in the population. The head CT scans helps to diagnose disorders that affect the brain, including tumors, infarction, bleeding within the brain, hematoma, and other diseases. The aim of this work is to verify the reduction of absorbed dose in patients in head CT scans with the use of bismuth shielding and positioning with the head tilted. An anthropomorphic male phantom model CIRS ATOM 701 were used to perform the head CT scans, from the cervical vertebra C1 to the top of skull, in a Toshiba CT scanner, Prime Aquillion model with 80 channels. Radiochromic film strips were used to evaluate the doses in the organs such as lenses, thyroid, hypophysis, spinal cord, breasts and salivary glands. Three head CT scans were performed, with the phantom in supine position, using the same acquisition protocol, with and without bismuth shielding and with the head tilted without the bismuth shielding. The results of these experiments showed absorbed doses ranging from 0.66 to 47.16 mGy. The highest dose of 47.16 mGy were in the lenses without bismuth shielding and with bismuth shielding was 33.01 mGy. Also, the dose with the head tilted was 20.42 mGy. The recorded doses were lower with the head tilted for all organs, mainly in the lenses. The analysis of noise in the image of the head central slice presented acceptable values for soft tissues, less than 1%.
| Published in | Innovation (Volume 3, Issue 1) |
| DOI | 10.11648/j.innov.20220301.13 |
| Page(s) | 13-17 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2022. Published by Science Publishing Group |
Computed Tomography, Dosimetry, Bismuth Shielding
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APA Style
Fernanda Stephanie Santos, Wadia Namen Aburjaile, Arnaldo Prata Mourão. (2022). Organ Dose Evaluation of Head Computed Tomography Scans Using a Male Anthropomorphic Phantom. Innovation, 3(1), 13-17. https://doi.org/10.11648/j.innov.20220301.13
ACS Style
Fernanda Stephanie Santos; Wadia Namen Aburjaile; Arnaldo Prata Mourão. Organ Dose Evaluation of Head Computed Tomography Scans Using a Male Anthropomorphic Phantom. Innovation. 2022, 3(1), 13-17. doi: 10.11648/j.innov.20220301.13
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Download@article{10.11648/j.innov.20220301.13,
author = {Fernanda Stephanie Santos and Wadia Namen Aburjaile and Arnaldo Prata Mourão},
title = {Organ Dose Evaluation of Head Computed Tomography Scans Using a Male Anthropomorphic Phantom},
journal = {Innovation},
volume = {3},
number = {1},
pages = {13-17},
doi = {10.11648/j.innov.20220301.13},
url = {https://doi.org/10.11648/j.innov.20220301.13},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.innov.20220301.13},
abstract = {Computed Tomography (CT) has been one of the most used exams for radiologic diagnostic in medicine. The increase in CT scans is a global concern due to the increase in radiation doses in the population. The head CT scans helps to diagnose disorders that affect the brain, including tumors, infarction, bleeding within the brain, hematoma, and other diseases. The aim of this work is to verify the reduction of absorbed dose in patients in head CT scans with the use of bismuth shielding and positioning with the head tilted. An anthropomorphic male phantom model CIRS ATOM 701 were used to perform the head CT scans, from the cervical vertebra C1 to the top of skull, in a Toshiba CT scanner, Prime Aquillion model with 80 channels. Radiochromic film strips were used to evaluate the doses in the organs such as lenses, thyroid, hypophysis, spinal cord, breasts and salivary glands. Three head CT scans were performed, with the phantom in supine position, using the same acquisition protocol, with and without bismuth shielding and with the head tilted without the bismuth shielding. The results of these experiments showed absorbed doses ranging from 0.66 to 47.16 mGy. The highest dose of 47.16 mGy were in the lenses without bismuth shielding and with bismuth shielding was 33.01 mGy. Also, the dose with the head tilted was 20.42 mGy. The recorded doses were lower with the head tilted for all organs, mainly in the lenses. The analysis of noise in the image of the head central slice presented acceptable values for soft tissues, less than 1%.},
year = {2022}
}
TY - JOUR T1 - Organ Dose Evaluation of Head Computed Tomography Scans Using a Male Anthropomorphic Phantom AU - Fernanda Stephanie Santos AU - Wadia Namen Aburjaile AU - Arnaldo Prata Mourão Y1 - 2022/02/16 PY - 2022 N1 - https://doi.org/10.11648/j.innov.20220301.13 DO - 10.11648/j.innov.20220301.13 T2 - Innovation JF - Innovation JO - Innovation SP - 13 EP - 17 PB - Science Publishing Group SN - 2994-7138 UR - https://doi.org/10.11648/j.innov.20220301.13 AB - Computed Tomography (CT) has been one of the most used exams for radiologic diagnostic in medicine. The increase in CT scans is a global concern due to the increase in radiation doses in the population. The head CT scans helps to diagnose disorders that affect the brain, including tumors, infarction, bleeding within the brain, hematoma, and other diseases. The aim of this work is to verify the reduction of absorbed dose in patients in head CT scans with the use of bismuth shielding and positioning with the head tilted. An anthropomorphic male phantom model CIRS ATOM 701 were used to perform the head CT scans, from the cervical vertebra C1 to the top of skull, in a Toshiba CT scanner, Prime Aquillion model with 80 channels. Radiochromic film strips were used to evaluate the doses in the organs such as lenses, thyroid, hypophysis, spinal cord, breasts and salivary glands. Three head CT scans were performed, with the phantom in supine position, using the same acquisition protocol, with and without bismuth shielding and with the head tilted without the bismuth shielding. The results of these experiments showed absorbed doses ranging from 0.66 to 47.16 mGy. The highest dose of 47.16 mGy were in the lenses without bismuth shielding and with bismuth shielding was 33.01 mGy. Also, the dose with the head tilted was 20.42 mGy. The recorded doses were lower with the head tilted for all organs, mainly in the lenses. The analysis of noise in the image of the head central slice presented acceptable values for soft tissues, less than 1%. VL - 3 IS - 1 ER -
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