Assessment of Effective Dose Associated with Coronary Computed Tomography Angiography in Isfahan Province, Iran
Computed tomography coronary angiography (CTCA) has generated a great interest over the past two decades, due to its high diagnostic accuracy and efficacy in the assessment of patients having coronary artery disease. This method is associated with high radiation dose and this has raised serious conc...
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2018-01-01
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| Series: | Journal of Medical Signals and Sensors |
| Subjects: | |
| Online Access: | http://www.jmss.mui.ac.ir/article.asp?issn=2228-7477;year=2018;volume=8;issue=1;spage=60;epage=64;aulast=Tavakoli |
| _version_ | 1818508027011006464 |
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| author | Mohammadbagher Tavakoli Reihane Faraji Zahra Alirezaei Zohre Nateghian |
| author_facet | Mohammadbagher Tavakoli Reihane Faraji Zahra Alirezaei Zohre Nateghian |
| author_sort | Mohammadbagher Tavakoli |
| collection | DOAJ |
| description | Computed tomography coronary angiography (CTCA) has generated a great interest over the past two decades, due to its high diagnostic accuracy and efficacy in the assessment of patients having coronary artery disease. This method is associated with high radiation dose and this has raised serious concerns in the literature. Effective dose (E) is a single parameter meant to reflect the relative risk from exposure to ionizing radiation. Therefore, it is necessary to calculate this parameter to indicate ionizing radiation relative risk. The aim of this study was to calculate the effective dose from 64-slice CTCA in Isfahan. To calculate the effective dose, an ionization chamber and a body phantom with diameter of 32 cm and length of 15 cm were used. CTCA radiation conditions commonly used in two centers were applied for this work. For all scans, computed tomography volume dose index (CTDIv), dose-length product (DLP), and effective dose were obtained using dose-length-product method. The obtained CTDIv, DLP, and effective dose were compared in two centers, and mean, maximum, and minimum values of effective dose for heart coronary CT angiography (CCTA) examinations and calcium score were compared with other studies. The amount of average, maximum, and minimum effective doses for heart CCTA examinations in two centers are 4.65 ± 0.06, 6.0489, and 3.492 mSv, respectively, and for calcium score test are, 1.04 ± 0.04, 2.155, and 0.98 mSv, respectively. CTDIv, DLP, and effective dose values did not show any significant difference in two centers. Although the effective dose of CTCA and calcium score was lower than that of other studies, it is reasonable to reduce the effective dose to the minimum possible value to reduce the risk of cancer associated with ionizing radiation. The results of this study can be used to introduce the effective dose as a local diagnostic reference dose (DRL) for CTCA examinations in Isfahan Province. |
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| format | Article |
| id | doaj.art-4615fff66c5b4912ba7115223e8143a6 |
| institution | Directory Open Access Journal |
| issn | 2228-7477 |
| language | English |
| last_indexed | 2024-12-10T22:26:13Z |
| publishDate | 2018-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Journal of Medical Signals and Sensors |
| spelling | doaj.art-4615fff66c5b4912ba7115223e8143a62022-12-22T01:31:11ZengWolters Kluwer Medknow PublicationsJournal of Medical Signals and Sensors2228-74772018-01-01816064Assessment of Effective Dose Associated with Coronary Computed Tomography Angiography in Isfahan Province, IranMohammadbagher TavakoliReihane FarajiZahra AlirezaeiZohre NateghianComputed tomography coronary angiography (CTCA) has generated a great interest over the past two decades, due to its high diagnostic accuracy and efficacy in the assessment of patients having coronary artery disease. This method is associated with high radiation dose and this has raised serious concerns in the literature. Effective dose (E) is a single parameter meant to reflect the relative risk from exposure to ionizing radiation. Therefore, it is necessary to calculate this parameter to indicate ionizing radiation relative risk. The aim of this study was to calculate the effective dose from 64-slice CTCA in Isfahan. To calculate the effective dose, an ionization chamber and a body phantom with diameter of 32 cm and length of 15 cm were used. CTCA radiation conditions commonly used in two centers were applied for this work. For all scans, computed tomography volume dose index (CTDIv), dose-length product (DLP), and effective dose were obtained using dose-length-product method. The obtained CTDIv, DLP, and effective dose were compared in two centers, and mean, maximum, and minimum values of effective dose for heart coronary CT angiography (CCTA) examinations and calcium score were compared with other studies. The amount of average, maximum, and minimum effective doses for heart CCTA examinations in two centers are 4.65 ± 0.06, 6.0489, and 3.492 mSv, respectively, and for calcium score test are, 1.04 ± 0.04, 2.155, and 0.98 mSv, respectively. CTDIv, DLP, and effective dose values did not show any significant difference in two centers. Although the effective dose of CTCA and calcium score was lower than that of other studies, it is reasonable to reduce the effective dose to the minimum possible value to reduce the risk of cancer associated with ionizing radiation. The results of this study can be used to introduce the effective dose as a local diagnostic reference dose (DRL) for CTCA examinations in Isfahan Province.http://www.jmss.mui.ac.ir/article.asp?issn=2228-7477;year=2018;volume=8;issue=1;spage=60;epage=64;aulast=TavakoliComputed tomography volume dose indexcoronary computed tomography angiographydose length producteffective doselocal diagnostic reference dosemultidetector computed tomography scan |
| spellingShingle | Mohammadbagher Tavakoli Reihane Faraji Zahra Alirezaei Zohre Nateghian Assessment of Effective Dose Associated with Coronary Computed Tomography Angiography in Isfahan Province, Iran Journal of Medical Signals and Sensors Computed tomography volume dose index coronary computed tomography angiography dose length product effective dose local diagnostic reference dose multidetector computed tomography scan |
| title | Assessment of Effective Dose Associated with Coronary Computed Tomography Angiography in Isfahan Province, Iran |
| title_full | Assessment of Effective Dose Associated with Coronary Computed Tomography Angiography in Isfahan Province, Iran |
| title_fullStr | Assessment of Effective Dose Associated with Coronary Computed Tomography Angiography in Isfahan Province, Iran |
| title_full_unstemmed | Assessment of Effective Dose Associated with Coronary Computed Tomography Angiography in Isfahan Province, Iran |
| title_short | Assessment of Effective Dose Associated with Coronary Computed Tomography Angiography in Isfahan Province, Iran |
| title_sort | assessment of effective dose associated with coronary computed tomography angiography in isfahan province iran |
| topic | Computed tomography volume dose index coronary computed tomography angiography dose length product effective dose local diagnostic reference dose multidetector computed tomography scan |
| url | http://www.jmss.mui.ac.ir/article.asp?issn=2228-7477;year=2018;volume=8;issue=1;spage=60;epage=64;aulast=Tavakoli |
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