The establishment of local diagnostic reference levels for computed tomography cerebral angiography in Jeddah city of Saudi Arabia
Abstract Purpose Cerebral computed tomography angiography (CTA) is a useful imaging modality for the diagnosis of blood vessels in brain diseases. The aim of this study was to assess the radiation dose and risk estimation for cerebral CTA scans for adult patients and introduce local diagnostic refer...
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SpringerOpen
2025-03-01
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| Series: | The Egyptian Journal of Radiology and Nuclear Medicine |
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| Online Access: | https://doi.org/10.1186/s43055-025-01435-y |
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| author | Khadijah khan Afnan Al-Harbi Alaa Fallatah Mohamed Alasmary Younis Bokhary Marwan Alhazmi Saeed Al-Qahtani Abdulwali Ajlouni Emtenan Alotaibi Ali Alomari Marwan Althomali Merfat Algethami Omemh Bawazeer |
| author_facet | Khadijah khan Afnan Al-Harbi Alaa Fallatah Mohamed Alasmary Younis Bokhary Marwan Alhazmi Saeed Al-Qahtani Abdulwali Ajlouni Emtenan Alotaibi Ali Alomari Marwan Althomali Merfat Algethami Omemh Bawazeer |
| author_sort | Khadijah khan |
| collection | DOAJ |
| description | Abstract Purpose Cerebral computed tomography angiography (CTA) is a useful imaging modality for the diagnosis of blood vessels in brain diseases. The aim of this study was to assess the radiation dose and risk estimation for cerebral CTA scans for adult patients and introduce local diagnostic reference levels (LDRLs) for cerebral CTA patients. Methods In this retrospective study, 291 patients (194 male and 97 female) underwent cerebral CTA scans of the head. The dosimetric quantities of the CT dose index volume (CTDIvol) and the dose length product (DLP) were collected. Following this, the effective dose, cancer risk and genetic risks were calculated. CTDIvol and DLP were derived; the suggested LDRLs were determined based on the 75th percentile for all examinations. Results The mean patient dose values for CTDIvol, DLP and effective dose were 42.83 ± 1.98 mGy, 1691.76 ± 128 mGy·cm and 5.20 ± 0.39 mSv, respectively. The CTDIvol value was the same for both sexes, while the DLP and effective dose values for males were 4% higher than for females. The cancer risk value for cerebral CTA was 29 × 10−5 ± 3.2 Sv−1, and the genetic risk was 10 × 10−4 ± 1.2 Sv–1. The LDRL value for CTDIvol was 32.36 (mGy) and for DLP was 1266.25 (mGy.cm). Conclusion This study assessed the radiation doses for cerebral CTA scans and introduced local DRLs for cerebral CTA examinations. In this study, the DLP and effective dose values were higher than those of other studies. The procedure of cerebral CTA scans that include total head and neck area should be optimized in regard to scan length and the head and neck k-factor. Therefore, it is highly recommended to establishing regional and national DRLs. |
| format | Article |
| id | doaj-art-6e2db5f72dca481bb00d6eafd252ebed |
| institution | OA Journals |
| issn | 2090-4762 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | SpringerOpen |
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| series | The Egyptian Journal of Radiology and Nuclear Medicine |
| spelling | doaj-art-6e2db5f72dca481bb00d6eafd252ebed2025-08-20T01:57:44ZengSpringerOpenThe Egyptian Journal of Radiology and Nuclear Medicine2090-47622025-03-015611910.1186/s43055-025-01435-yThe establishment of local diagnostic reference levels for computed tomography cerebral angiography in Jeddah city of Saudi ArabiaKhadijah khan0Afnan Al-Harbi1Alaa Fallatah2Mohamed Alasmary3Younis Bokhary4Marwan Alhazmi5Saeed Al-Qahtani6Abdulwali Ajlouni7Emtenan Alotaibi8Ali Alomari9Marwan Althomali10Merfat Algethami11Omemh Bawazeer12Physics Department, Umm Al-Qura UniversityPhysics Department, Umm Al-Qura UniversityMedical Physics Department, King Fahad General HospitalMedical Physics Department, King Fahad General HospitalMedical Physics Department, King Fahad General HospitalMedical Physics Department, Maternity & Children HospitalPhysics Department, Umm Al-Qura UniversityPhysics Department, Umm Al-Qura UniversityPhysics Department, Umm Al-Qura UniversityPhysics Department, Umm Al-Qura UniversityPhysics Department, Umm Al-Qura UniversityPhysics Department, Faculty of Science, Taif UniversityPhysics Department, Umm Al-Qura UniversityAbstract Purpose Cerebral computed tomography angiography (CTA) is a useful imaging modality for the diagnosis of blood vessels in brain diseases. The aim of this study was to assess the radiation dose and risk estimation for cerebral CTA scans for adult patients and introduce local diagnostic reference levels (LDRLs) for cerebral CTA patients. Methods In this retrospective study, 291 patients (194 male and 97 female) underwent cerebral CTA scans of the head. The dosimetric quantities of the CT dose index volume (CTDIvol) and the dose length product (DLP) were collected. Following this, the effective dose, cancer risk and genetic risks were calculated. CTDIvol and DLP were derived; the suggested LDRLs were determined based on the 75th percentile for all examinations. Results The mean patient dose values for CTDIvol, DLP and effective dose were 42.83 ± 1.98 mGy, 1691.76 ± 128 mGy·cm and 5.20 ± 0.39 mSv, respectively. The CTDIvol value was the same for both sexes, while the DLP and effective dose values for males were 4% higher than for females. The cancer risk value for cerebral CTA was 29 × 10−5 ± 3.2 Sv−1, and the genetic risk was 10 × 10−4 ± 1.2 Sv–1. The LDRL value for CTDIvol was 32.36 (mGy) and for DLP was 1266.25 (mGy.cm). Conclusion This study assessed the radiation doses for cerebral CTA scans and introduced local DRLs for cerebral CTA examinations. In this study, the DLP and effective dose values were higher than those of other studies. The procedure of cerebral CTA scans that include total head and neck area should be optimized in regard to scan length and the head and neck k-factor. Therefore, it is highly recommended to establishing regional and national DRLs.https://doi.org/10.1186/s43055-025-01435-yLocal diagnostic reference levelsComputed tomography angiography (CTA)Effective doseRisk assessment |
| spellingShingle | Khadijah khan Afnan Al-Harbi Alaa Fallatah Mohamed Alasmary Younis Bokhary Marwan Alhazmi Saeed Al-Qahtani Abdulwali Ajlouni Emtenan Alotaibi Ali Alomari Marwan Althomali Merfat Algethami Omemh Bawazeer The establishment of local diagnostic reference levels for computed tomography cerebral angiography in Jeddah city of Saudi Arabia The Egyptian Journal of Radiology and Nuclear Medicine Local diagnostic reference levels Computed tomography angiography (CTA) Effective dose Risk assessment |
| title | The establishment of local diagnostic reference levels for computed tomography cerebral angiography in Jeddah city of Saudi Arabia |
| title_full | The establishment of local diagnostic reference levels for computed tomography cerebral angiography in Jeddah city of Saudi Arabia |
| title_fullStr | The establishment of local diagnostic reference levels for computed tomography cerebral angiography in Jeddah city of Saudi Arabia |
| title_full_unstemmed | The establishment of local diagnostic reference levels for computed tomography cerebral angiography in Jeddah city of Saudi Arabia |
| title_short | The establishment of local diagnostic reference levels for computed tomography cerebral angiography in Jeddah city of Saudi Arabia |
| title_sort | establishment of local diagnostic reference levels for computed tomography cerebral angiography in jeddah city of saudi arabia |
| topic | Local diagnostic reference levels Computed tomography angiography (CTA) Effective dose Risk assessment |
| url | https://doi.org/10.1186/s43055-025-01435-y |
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