The doses received by the patient during Computed Tomography (CT) examination are relatively significant compared with the doses received by patients undergoing classic X-ray examinations. Owing to this, each country should adopt a consistent policy to optimize the doses delivered to the patient during CT examination. One of the available options for the dose optimization is the implementation of the Diagnostic Reference Levels (DRLs) to evaluate thedose delivered to the patient and to guide the operators for the choice of parameters during CT examinations. Actually, Madagascar hasn’t got yet his own DRLs, so that the International Atomic Energy Agency (IAEA) or other international existing DRLs are used to fill this gap. The present study was performed to analyze the feasibility of setting (DRLs) atnational level. The study is a part of an IAEA Project entitled “Strengthening Technical Capabilities for Patient and Occupational Radiation Protection in Member States”, RAF9053. For this purpose, three public and private hospitals using computed tomography were selected. The patient dose assessment was performed by determining the Computed Tomography Dose Index (CTDI), Multiple Scan Average Dose (MSAD), Dose Length Product (DLP) and Effective dose (E) for an adult chest and skull CT examination. Pencil ionization chamber was used, having an active length of 100 mm, connected with an electrometer (RAD-CHECK). The system was calibrated through the Secondary Standard Dosimetry Laboratory of Madagascar (SSDL-Madagascar) before the measurements campaign. To simulate the patient presence, two types of Polymethylmethacrylate (PMMA) phantoms were used. The first, having 32 cm diameter was used to replace an adult body patient, and the second phantom, having 16 cm diameter simulate the head of an adult patient. The results were compared with the International Diagnostic Reference Level which is chosen for this study. It has beenestablished that the obtained values are similar to the existing DRLs. Measurements performed during this study can be useful for the patient dose optimization and considered as the first and main step for the National Diagnostic Reference Level setting for Computed Tomography in Madagascar.
| Published in | Radiation Science and Technology (Volume 1, Issue 2) |
| DOI | 10.11648/j.rst.20150102.11 |
| Page(s) | 13-18 |
| 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), 2024. Published by Science Publishing Group |
Computed Tomography, CTDI, DLP, DRLs, Patient Dose
| [1] | International Atomic Energy Agency, Optimization of the Radiological Protection of patients undergoing Radiography, Fluoroscopy and Computed Tomography; IAEA- TEC DOC-1423, Vienna, Austria (2004). |
| [2] | International Atomic Energy Agency, Radiation doses in diagnostic radiology and methods for dose reduction, IAEA-TECDOC-796 (1995). |
| [3] | International Atomic Energy A²gency, Basic Safety Standard for Protection against Ionizing Radiation and for Safety of Radiation Sources, IAEA-SAFETY SERIES N°115 (1996). |
| [4] | International Atomic Energy Agency, Technical Reports Series n° 457, Dosimetry in Diagnostic Radiology: An International Code of Practice, IAEA-TRS457, September 2007. |
| [5] | American Association of Physicists in Medicine One Physics Ellipse College Park, MD 20740-3846, The Measurement, Reporting, and Management of Radiation dose in CT, Report n°96 (January 1998). |
| [6] | ImPACT, Radiation dose issues in multi-slice CT scanning technology, update no. 3 (January 2005). |
| [7] | Hans Dieter Nagel, Radiation Exposure in Computed Tomography, Fundamentals, Influencing Parameters, Dose Assessment, Optimization, Scanner Data, Terminology. |
| [8] | ImPACT, NRPB – W67, Dose from Computed Tomography (CT) Examination in the UK-2003 Review. |
| [9] | ImPACT, Radiation Dose issues in multi-slice CT scanning, January 2005 (ImPACT Technology update n°3). |
| [10] | ImPACT, Information Leaflet n°1, CT Scanner Acceptance Testing, Version 1.02, 18/05/01. |
| [11] | RMI (Radiation Measurements, Inc), Quality assurance Handbook International Commission on Radiation Protection, publication n°87. |
APA Style
Ralaivelo Mbolatiana Anjarasoa Luc, Ramanandraibe Marie Jeanne, Raoelina Andraimbololona, Randrianarivony Edmond, Zafimanjato J. L. Radaorolala, et al. (2015). Establishing Diagnostic Reference Level for Computed Tomography Examination in Madagascar. Radiation Science and Technology, 1(2), 13-18. https://doi.org/10.11648/j.rst.20150102.11
ACS Style
Ralaivelo Mbolatiana Anjarasoa Luc; Ramanandraibe Marie Jeanne; Raoelina Andraimbololona; Randrianarivony Edmond; Zafimanjato J. L. Radaorolala, et al. Establishing Diagnostic Reference Level for Computed Tomography Examination in Madagascar. Radiat. Sci. Technol. 2015, 1(2), 13-18. doi: 10.11648/j.rst.20150102.11
AMA Style
Ralaivelo Mbolatiana Anjarasoa Luc, Ramanandraibe Marie Jeanne, Raoelina Andraimbololona, Randrianarivony Edmond, Zafimanjato J. L. Radaorolala, et al. Establishing Diagnostic Reference Level for Computed Tomography Examination in Madagascar. Radiat Sci Technol. 2015;1(2):13-18. doi: 10.11648/j.rst.20150102.11
Share This Article
Twitter
Linked In
Facebook
Copy
Download@article{10.11648/j.rst.20150102.11,
author = {Ralaivelo Mbolatiana Anjarasoa Luc and Ramanandraibe Marie Jeanne and Raoelina Andraimbololona and Randrianarivony Edmond and Zafimanjato J. L. Radaorolala and Randriantsizafy Ralainirina Dina and Randriamora Tiana Harimalala},
title = {Establishing Diagnostic Reference Level for Computed Tomography Examination in Madagascar},
journal = {Radiation Science and Technology},
volume = {1},
number = {2},
pages = {13-18},
doi = {10.11648/j.rst.20150102.11},
url = {https://doi.org/10.11648/j.rst.20150102.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.rst.20150102.11},
abstract = {The doses received by the patient during Computed Tomography (CT) examination are relatively significant compared with the doses received by patients undergoing classic X-ray examinations. Owing to this, each country should adopt a consistent policy to optimize the doses delivered to the patient during CT examination. One of the available options for the dose optimization is the implementation of the Diagnostic Reference Levels (DRLs) to evaluate thedose delivered to the patient and to guide the operators for the choice of parameters during CT examinations. Actually, Madagascar hasn’t got yet his own DRLs, so that the International Atomic Energy Agency (IAEA) or other international existing DRLs are used to fill this gap. The present study was performed to analyze the feasibility of setting (DRLs) atnational level. The study is a part of an IAEA Project entitled “Strengthening Technical Capabilities for Patient and Occupational Radiation Protection in Member States”, RAF9053. For this purpose, three public and private hospitals using computed tomography were selected. The patient dose assessment was performed by determining the Computed Tomography Dose Index (CTDI), Multiple Scan Average Dose (MSAD), Dose Length Product (DLP) and Effective dose (E) for an adult chest and skull CT examination. Pencil ionization chamber was used, having an active length of 100 mm, connected with an electrometer (RAD-CHECK). The system was calibrated through the Secondary Standard Dosimetry Laboratory of Madagascar (SSDL-Madagascar) before the measurements campaign. To simulate the patient presence, two types of Polymethylmethacrylate (PMMA) phantoms were used. The first, having 32 cm diameter was used to replace an adult body patient, and the second phantom, having 16 cm diameter simulate the head of an adult patient. The results were compared with the International Diagnostic Reference Level which is chosen for this study. It has beenestablished that the obtained values are similar to the existing DRLs. Measurements performed during this study can be useful for the patient dose optimization and considered as the first and main step for the National Diagnostic Reference Level setting for Computed Tomography in Madagascar.},
year = {2015}
}
TY - JOUR T1 - Establishing Diagnostic Reference Level for Computed Tomography Examination in Madagascar AU - Ralaivelo Mbolatiana Anjarasoa Luc AU - Ramanandraibe Marie Jeanne AU - Raoelina Andraimbololona AU - Randrianarivony Edmond AU - Zafimanjato J. L. Radaorolala AU - Randriantsizafy Ralainirina Dina AU - Randriamora Tiana Harimalala Y1 - 2015/12/14 PY - 2015 N1 - https://doi.org/10.11648/j.rst.20150102.11 DO - 10.11648/j.rst.20150102.11 T2 - Radiation Science and Technology JF - Radiation Science and Technology JO - Radiation Science and Technology SP - 13 EP - 18 PB - Science Publishing Group SN - 2575-5943 UR - https://doi.org/10.11648/j.rst.20150102.11 AB - The doses received by the patient during Computed Tomography (CT) examination are relatively significant compared with the doses received by patients undergoing classic X-ray examinations. Owing to this, each country should adopt a consistent policy to optimize the doses delivered to the patient during CT examination. One of the available options for the dose optimization is the implementation of the Diagnostic Reference Levels (DRLs) to evaluate thedose delivered to the patient and to guide the operators for the choice of parameters during CT examinations. Actually, Madagascar hasn’t got yet his own DRLs, so that the International Atomic Energy Agency (IAEA) or other international existing DRLs are used to fill this gap. The present study was performed to analyze the feasibility of setting (DRLs) atnational level. The study is a part of an IAEA Project entitled “Strengthening Technical Capabilities for Patient and Occupational Radiation Protection in Member States”, RAF9053. For this purpose, three public and private hospitals using computed tomography were selected. The patient dose assessment was performed by determining the Computed Tomography Dose Index (CTDI), Multiple Scan Average Dose (MSAD), Dose Length Product (DLP) and Effective dose (E) for an adult chest and skull CT examination. Pencil ionization chamber was used, having an active length of 100 mm, connected with an electrometer (RAD-CHECK). The system was calibrated through the Secondary Standard Dosimetry Laboratory of Madagascar (SSDL-Madagascar) before the measurements campaign. To simulate the patient presence, two types of Polymethylmethacrylate (PMMA) phantoms were used. The first, having 32 cm diameter was used to replace an adult body patient, and the second phantom, having 16 cm diameter simulate the head of an adult patient. The results were compared with the International Diagnostic Reference Level which is chosen for this study. It has beenestablished that the obtained values are similar to the existing DRLs. Measurements performed during this study can be useful for the patient dose optimization and considered as the first and main step for the National Diagnostic Reference Level setting for Computed Tomography in Madagascar. VL - 1 IS - 2 ER -
Information
Email: