Pediatric Head Ct Exposure Doses in Tunisia: A Pilot Study Towards the Establishment of National Diagnostic Reference Levels

Bouaoun, Abir; Omrane, L. Ben; Mogaadi, Mohamed; Khomsi, W. Douira; Zidi, A.; Hammou, A.

doi:10.1093/rpd/ncy055

Cited by 7 publications

(3 citation statements)

References 16 publications

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“…Acquisitions with the same mA will provide a constant current without considering the characteristics of the patients, which may even be influenced according to gender and age. In addition, the dose should be optimized in younger individuals, as they are more sensitive to radiation [12].…”

Section: Resultsmentioning

confidence: 99%

Estimation of Absorbed Dose in Head CT scans Based on mA and mAs Modulation and Volumetric Air Kerma Index (CVOL) in Petrolina/PE, Brazil

Albuquerque

Silva²,

Ramos

et al. 2021

Braz. J. Rad. Sci.

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A tomografia computadorizada (TC) representa uma grande porcentagem da dose de radiação em exposições médicas. Portanto, otimizar a proteção do paciente tem sido uma prática com uma discussão importante. Este estudo tem como objetivo estimar a dose absorvida em órgãos e tecidos relevantes em tomografias computadorizadas de crânio em pacientes adultos com base na modulação automática da corrente do tubo (mA) e do produto atual-tempo (mAs) e índice de kerma no ar volumétrico (C VOL) Para tanto, esses parâmetros foram coletados durante três bimestres em duas instituições com amplo atendimento em Petrolina / PE. Um do setor privado, denominado instituição A e outro do setor público, denominado instituição B. A avaliação da dose foi realizada por meio do software de simulação CALDose_XCT. Os resultados mostraram que os valores médios de mA e mAs por bimestre foram menores na instituição A, onde o controle automático de exposição (AEC) foi ativado, seguindo as orientações de boas práticas em tomografias. O C VOL apresentou valores médios dentro dos níveis recomendados, embora na instituição B esse parâmetro tenha apresentado maior magnitude. Nas simulações, a instituição B apresentou maiores doses absorvidas nas estruturas relevantes, corroborando com a menor otimização de mA, mAs e C VOL. Este trabalho mostrou a existência de ligação entre os parâmetros radiológicos e a dose absorvida no paciente, sugerindo a realização de estudos de otimização em exames de TC de crânio.

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Section: Resultsmentioning

confidence: 99%

Estimation of Absorbed Dose in Head CT scans Based on mA and mAs Modulation and Volumetric Air Kerma Index (CVOL) in Petrolina/PE, Brazil

Albuquerque

Silva²,

Ramos

et al. 2021

Braz. J. Rad. Sci.

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“…The DRLs, as an important measure for CT dose optimisation, are helpful for hospitals and radiologists to keep the radiation dose to patients as low as reasonably achievable facing the problem of medical radiation protection [17]. The DRLs have been used for medical radiation protection in many countries in the world [12,15,28,[32][33][34]. In light of the latest European guidelines on DRLs for paediatric imaging, radiology practitioners, experts and scholars have made efforts to explore the establishment of Chinese DRLs using the Chinese data [16].…”

Section: Discussionmentioning

confidence: 99%

Age-based diagnostic reference levels and achievable doses for paediatric CT: a survey in Shanghai, China

Yang,

Gao

2024

J. Radiol. Prot.

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Computed tomography (CT) is extensively utilized in medical diagnostics due to its notable radiographic superiority. However, the cancer risk associated with CT examinations, particularly in children, is of significant concern. The assessment of cancer risk relies on the radiation dose to examinees. Diagnostic reference levels (DRLs) and achievable doses (ADs) were used to assess the level of radiation dose in CT examinations widely. Although the national DRLs of pediatric CT have been explored in China, few local DRLs at the city level have been assessed. To set up the local DRLs and ADs of pediatric CT, we investigated the radiation dose level for pediatric CT in Shanghai. In this survey, a total of 3 061 pediatric CT examinations underwent in Shanghai in 2022 were selected by stratified sampling, and the dose levels in terms of volume CT dose index (CTDIvol) and the dose-length product (DLP) were analyzed by 4 age groups. The DRLs and ADs were set at the 75th and 50th percentile of the distribution and compared with the previous studies at home and abroad. The survey results revealed that, for head scan,theDRLs of CTDIvol were from 25 to 46 mGy, and the levels of DLP were from 340 to 663 mGy·cm. For chest, the DRLs of CTDIvol were from 2.2 to 8.3 mGy, and the levels of DLP were from 42 to 223 mGy·cm. For abdomen, the DRLs of CTDIvol were from 6.3 to 16 mGy, and the levels of DLP were from 181 to 557 mGy·cm. The ADs were about 60 percent lower than their corresponding DRLs. The levels of radiation doses in children-based hospitals were higher than those in other medical institutions. (P<0.001).In conclusion, there was still potential for reducing radiation dose of pediatric CT, emphasizing the urgent need for optimizing pediatric CT dose in Shanghai.

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“…In Tunisia, the establishment of local DRLs in paediatric CT was initiated by some authors [26][27][28] in the same IAEA projects framework without leading to regulatory national DRLs. The data published in this field are very limited and no longer seem adequate for the practices and the current CT facilities, especially in the interior regions within the country.…”

Section: Introductionmentioning

confidence: 99%

Towards the establishment of national diagnostic reference levels in Tunisia: a multicentre survey in paediatric CT

Bouaoun¹,

Omrane²,

Khomsi³

2022

J. Radiol. Prot.

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This work focuses on the determination of the radiation doses for a total sample of 916 children, categorized in four age groups (<1,1-5, <5-10, <10-15 y) undergoing the most frequent pediatric CT scans performed in different scan facilities in Tunisia in order to establish the national Diagnostic Reference Levels (DRL). Dose evaluation concerned the dosimteric indicators: Volume Computed Tomography Dose Index (CTDIvol) and Dose Length Product (DLP). The different pediatric CT protocols and practices were also evaluated. Results show large variation in doses between different radiology departments. For head scans, the respective DRLs for <1, 1-5, 5-10 and 10-15 years were 26, 38, 51 and 51 mGy for CTDIvol, and 384, 664, 873 and 978 mGy cm for DLP. For the chest, the equivalent DRLs were 8, 10, 12 and 15 mGy for CTDIvol and 118, 330, 442 and 526 mGy cm for DLP. For the abdomen, the DRLs were 9,13,19,18 CTDIvol and 353, 485,592, 1073 mGy cm for DLP. This study shows that the optimization of pediatric CT procedures should be a priority especially within the regional hospitals. The implementation of corrective actions will take place after the initial DRLs. These actions, including recommendations and guidelines to good practice, should be a joint effort of all stakeholders, including health authorities, radiation protection regulator, professional societies and universities.

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Pediatric Head Ct Exposure Doses in Tunisia: A Pilot Study Towards the Establishment of National Diagnostic Reference Levels

Cited by 7 publications

References 16 publications

Estimation of Absorbed Dose in Head CT scans Based on mA and mAs Modulation and Volumetric Air Kerma Index (CVOL) in Petrolina/PE, Brazil

Estimation of Absorbed Dose in Head CT scans Based on mA and mAs Modulation and Volumetric Air Kerma Index (CVOL) in Petrolina/PE, Brazil

Age-based diagnostic reference levels and achievable doses for paediatric CT: a survey in Shanghai, China

Towards the establishment of national diagnostic reference levels in Tunisia: a multicentre survey in paediatric CT

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