Diagnostic reference levels for head and abdominal computed tomography of adult patients in selected states in South-South Nigeria
Context: Diagnostic reference level (DRL) is the first step in the optimization process to manage patient dose corresponding with the medical purpose. Aim: The objective of this study was to develop local DRL for computed tomography (CT) of the head and abdomen in adult patients in four CT centers i...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2021-01-01
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| Series: | Journal of Radiation and Cancer Research |
| Subjects: | |
| Online Access: | http://www.journalrcr.org/article.asp?issn=2588-9273;year=2021;volume=12;issue=2;spage=46;epage=52;aulast=Tobi |
| _version_ | 1819143104936017920 |
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| author | Anwuli Christiana Tobi Chukwuka Emmanuel Mokobia Joyce Ekeme Ikubor Akintayo Daniel Omojola Maryann Etim Ekpo Anita Franklin Akpolile |
| author_facet | Anwuli Christiana Tobi Chukwuka Emmanuel Mokobia Joyce Ekeme Ikubor Akintayo Daniel Omojola Maryann Etim Ekpo Anita Franklin Akpolile |
| author_sort | Anwuli Christiana Tobi |
| collection | DOAJ |
| description | Context: Diagnostic reference level (DRL) is the first step in the optimization process to manage patient dose corresponding with the medical purpose. Aim: The objective of this study was to develop local DRL for computed tomography (CT) of the head and abdomen in adult patients in four CT centers in South-South Nigeria. Materials and Methods: A prospective, cross-sectional study of 546 adult patients that underwent CT examination of the head and abdomen from 2018 to 2020 using four different CT scanners. Volume CT dose index (CTDIvol) and dose length product (DLP) of contrast and non-contrast CT examinations of the head and abdomen were collated and the 50th percentile DRL was determined and compared to other published DRLs. Results: The 50th percentile CTDIvol/DLP for non-contrast head CT examination for centers A, B, C, and D was 75.3 mGy/1776.6 mGy.cm, 21.8 mGy/457 mGy.cm, 17.4 mGy/373.6 mGy.cm, and 29.6 mGy/628.5 mGy.cm, respectively. The 50th percentile CTDIvol/DLP for contrast head CT examination for centers A, B, C, and D was 150.6 mGy/3326.2 mGy.cm, 41.4 mGy/832.4 mGy.cm, 35.6 mGy/653.6 mGy.cm, and 77.9 mGy/1458.4 mGy.cm, respectively. The 50th percentile CTDIvol/DLP for non-contrast abdomen CT examination for centers A and B was 22.8 mGy/1488.5 mGy.cm and 7.9 mGy/302.3 mGy.cm, respectively. The 50th percentile CTDIvol/DLP for contrast abdomen CT examination for centers B and C was 19.6 mGy/825.7 mGy.cm and 31.5 mGy/1555.5 mGy.cm, respectively. There was correlation between contrast and non-contrast CTDI (P = 0.003) and DLP (P = 0.025) for the head. Conclusion: Wide variations CTDIvol and DLP values were observed among the centers for similar body part CT examinations. |
| first_indexed | 2024-12-22T12:20:57Z |
| format | Article |
| id | doaj.art-5eb96f164dc74e9f83d5076943203a67 |
| institution | Directory Open Access Journal |
| issn | 2588-9273 2468-9203 |
| language | English |
| last_indexed | 2024-12-22T12:20:57Z |
| publishDate | 2021-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Journal of Radiation and Cancer Research |
| spelling | doaj.art-5eb96f164dc74e9f83d5076943203a672022-12-21T18:25:59ZengWolters Kluwer Medknow PublicationsJournal of Radiation and Cancer Research2588-92732468-92032021-01-01122465210.4103/jrcr.jrcr_67_20Diagnostic reference levels for head and abdominal computed tomography of adult patients in selected states in South-South NigeriaAnwuli Christiana TobiChukwuka Emmanuel MokobiaJoyce Ekeme IkuborAkintayo Daniel OmojolaMaryann Etim EkpoAnita Franklin AkpolileContext: Diagnostic reference level (DRL) is the first step in the optimization process to manage patient dose corresponding with the medical purpose. Aim: The objective of this study was to develop local DRL for computed tomography (CT) of the head and abdomen in adult patients in four CT centers in South-South Nigeria. Materials and Methods: A prospective, cross-sectional study of 546 adult patients that underwent CT examination of the head and abdomen from 2018 to 2020 using four different CT scanners. Volume CT dose index (CTDIvol) and dose length product (DLP) of contrast and non-contrast CT examinations of the head and abdomen were collated and the 50th percentile DRL was determined and compared to other published DRLs. Results: The 50th percentile CTDIvol/DLP for non-contrast head CT examination for centers A, B, C, and D was 75.3 mGy/1776.6 mGy.cm, 21.8 mGy/457 mGy.cm, 17.4 mGy/373.6 mGy.cm, and 29.6 mGy/628.5 mGy.cm, respectively. The 50th percentile CTDIvol/DLP for contrast head CT examination for centers A, B, C, and D was 150.6 mGy/3326.2 mGy.cm, 41.4 mGy/832.4 mGy.cm, 35.6 mGy/653.6 mGy.cm, and 77.9 mGy/1458.4 mGy.cm, respectively. The 50th percentile CTDIvol/DLP for non-contrast abdomen CT examination for centers A and B was 22.8 mGy/1488.5 mGy.cm and 7.9 mGy/302.3 mGy.cm, respectively. The 50th percentile CTDIvol/DLP for contrast abdomen CT examination for centers B and C was 19.6 mGy/825.7 mGy.cm and 31.5 mGy/1555.5 mGy.cm, respectively. There was correlation between contrast and non-contrast CTDI (P = 0.003) and DLP (P = 0.025) for the head. Conclusion: Wide variations CTDIvol and DLP values were observed among the centers for similar body part CT examinations.http://www.journalrcr.org/article.asp?issn=2588-9273;year=2021;volume=12;issue=2;spage=46;epage=52;aulast=Tobicomputed tomographydose-length productdiagnostic reference levelvolume computed tomography dose index |
| spellingShingle | Anwuli Christiana Tobi Chukwuka Emmanuel Mokobia Joyce Ekeme Ikubor Akintayo Daniel Omojola Maryann Etim Ekpo Anita Franklin Akpolile Diagnostic reference levels for head and abdominal computed tomography of adult patients in selected states in South-South Nigeria Journal of Radiation and Cancer Research computed tomography dose-length product diagnostic reference level volume computed tomography dose index |
| title | Diagnostic reference levels for head and abdominal computed tomography of adult patients in selected states in South-South Nigeria |
| title_full | Diagnostic reference levels for head and abdominal computed tomography of adult patients in selected states in South-South Nigeria |
| title_fullStr | Diagnostic reference levels for head and abdominal computed tomography of adult patients in selected states in South-South Nigeria |
| title_full_unstemmed | Diagnostic reference levels for head and abdominal computed tomography of adult patients in selected states in South-South Nigeria |
| title_short | Diagnostic reference levels for head and abdominal computed tomography of adult patients in selected states in South-South Nigeria |
| title_sort | diagnostic reference levels for head and abdominal computed tomography of adult patients in selected states in south south nigeria |
| topic | computed tomography dose-length product diagnostic reference level volume computed tomography dose index |
| url | http://www.journalrcr.org/article.asp?issn=2588-9273;year=2021;volume=12;issue=2;spage=46;epage=52;aulast=Tobi |
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