Radiation dose and risk of exposure-induced death associated with common computed tomography procedures in Yazd Province

Masjedi, Hamidreza; Omidi, Reza; Zamani, Hossein; Perota, Ghazale; Zare, Mohammad Hosein

doi:10.1016/j.ejrad.2020.108932

Cited by 9 publications

(11 citation statements)

References 41 publications

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“…In addition to dose descriptors and DRLs, it is necessary to emphasize the importance of REID values estimation for referring medical doctors and radiologists to be able to evaluate the associated risk to patients. PCXMC software has been used for the estimation of REID values in various studies [ 26 , 54 , 55 , 56 ], but correlation was difficult since there was no research addressing values for this type of procedure. Younger females are at higher risk due to greater radiosensitivity and position of certain organs, especially breasts as displayed in Table 3 and Figure 3 b.…”

Section: Discussionmentioning

confidence: 99%

“…The previously introduced effective dose is only valid for comparing doses from different hospitals or countries, and it cannot be used for the detailed assessment of individual risk. So, several studies recommend replacing the effective dose with the risk of exposure-induced cancer death (REID) values which are based on age and gender [ 26 ]. The REID is defined as the probability that an individual will die from cancer associated with the exposure, and it can also be compared to other potential health risks in everyday life.…”

Section: Introductionmentioning

confidence: 99%

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Dose Descriptors and Assessment of Risk of Exposure-Induced Death in Patients Undergoing COVID-19 Related Chest Computed Tomography

et al. 2022

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For more than two years, coronavirus disease 19 (COVID-19) has represented a threat to global health and lifestyles. Computed tomography (CT) imaging provides useful information in patients with COVID-19 pneumonia. However, this diagnostic modality is based on exposure to ionizing radiation, which is associated with an increased risk of radiation-induced cancer. In this study, we evaluated the common dose descriptors, CTDIvol and DLP, for 1180 adult patients. This data was used to estimate the effective dose, and risk of exposure-induced death (REID). Awareness of the extensive use of CT as a diagnostic tool in the management of COVID-19 during the pandemic is vital for the evaluation of radiation exposure parameters, dose reduction methods development and radiation protection.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dose Descriptors and Assessment of Risk of Exposure-Induced Death in Patients Undergoing COVID-19 Related Chest Computed Tomography

et al. 2022

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“…Therefore, in the admission screening of COVID-19 for cancer patients, attention should be paid to the chest CT performance. However, the dose delivered to patients through CT scans is much greater than that produced by modalities including plain radiograph, which may cause serious problems in the future, including carcinogenesis and heritable issues (40).…”

Section: Recommendations For Screening Covid-19 For Cancer Patients Upon Admissionmentioning

confidence: 99%

When cancer encounters COVID-19 in China: what have we suffered, experienced and learned

Chen

Wang

et al. 2020

Japanese Journal of Clinical Oncology

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The outbreak of the coronavirus disease (COVID-19) occurred in Wuhan, China, in December 2019. As of 21 March 2020, this epidemic has spread to 179 countries with more than 200 000 confirmed cases and 8578 deaths. The outbreak has put enormous pressure on the medical establishment and even led to exhaustion of medical resources in the most affected areas. Other medical work has been significantly affected in the context of COVID-19 epidemic. In order to reduce or avoid cross-infection with COVID-19, many hospitals have taken measures to limit the number of outpatient visits and inpatients. For example, emergency surgery can only be guaranteed, and most other surgeries can be postponed. Patients with cancer are one of the groups most affected by the epidemic because of their systematic immunosuppressive state and requirement of frequent admission to hospital. Consequently, specific adjustments for their treatment need to be made to cope with this situation. Therefore, it is of significance to summarize the relevant experience of China in the prevention and control of COVID-19 infection and treatment of patients with cancer during the epidemic.

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“…Accordingly, concerns have been raised in the scientific literature [ 2 , 6 – 8 ]. It has been acknowledged that doses can be reduced by implementing diagnostic reference levels (DRLs) [ 9 ], leading to emphasized dose optimization and justification at an institutional level.…”

Section: Introductionmentioning

confidence: 99%

Gender based lung cancer risks for symptomatic coronary artery disease patients undergone cardiac CT

et al. 2022

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We estimate the lifetime attributable risk (LAR) of lung cancer incidence in symptomatic Coronary Artery Disease (CAD) patients receiving enhanced Coronary Computed Tomography Angiography (CCTA) and the unenhanced Computed Tomography Calcium Scoring (CTCS) examination. Retrospective analysis has been made of CCTA and CTCS data collected for 87 confirmed CAD adult patients. Patient effective dose (E) and organ doses (ODs) were calculated using CT-EXPO. Statistical correlation and the differences between E and ODs in enhanced CCTA and unenhanced CTCS were calculated using the Pearson coefficient and Wilcoxon unpaired t-test. Following BEIR VII report guidance, organ-specific LARs for the cohort were estimated using the organ-equivalent dose-to-risk conversion factor for numbers of cases per 100,000 patients exposed to low doses of 0.1 Gy. Significant statistical difference (p<0.0001) is found between E obtained for CTCS and that of CCTA. The scan length was found to be greater in CCTA (17.5 ± 2.9 cm) compared to that for CTCS (15 ± 2 cm). More elevated values of dose were noted for the esophagus (4.2 ± 2.15 mSv) and thymus (9.6 ± 2.54 mSv) for both CTCS and CCTA. CTCS organ doses were lower than that of CCTA. Per 100,000 patients, female cumulative doses are seen to give rise to greater lung cancer LARs compared to that for males, albeit with risk varying significantly, noticeably greater for females, younger patients and combined CCTA and CTCS scans. While scan parameters and tube-modulation methods clearly contribute to patient dose, mAs offers by far the greater contribution.

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Radiation dose and risk of exposure-induced death associated with common computed tomography procedures in Yazd Province

Cited by 9 publications

References 41 publications

Dose Descriptors and Assessment of Risk of Exposure-Induced Death in Patients Undergoing COVID-19 Related Chest Computed Tomography

Dose Descriptors and Assessment of Risk of Exposure-Induced Death in Patients Undergoing COVID-19 Related Chest Computed Tomography

When cancer encounters COVID-19 in China: what have we suffered, experienced and learned

Gender based lung cancer risks for symptomatic coronary artery disease patients undergone cardiac CT

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