Optimised paediatric CT dose at a tertiary children's hospital in Japan: a 4-y single-centre analysis

Nakada, Yoshihiro; Fujiwara, Mika; Yakami, Masahiro; Yokoyama, Takashi; Shirayama, Akira; Yamamoto, H.; Nabatame, K.; Obara, Satoshi; Akahane, Keiichi; Blyth, Benjamin J.; Miyazaki, Osamu; Date, Hiroaki; Yagi, Kazuo; Hoshioka, Akira; Shimada, Yoshiya

doi:10.1093/rpd/ncv004

Cited by 5 publications

(2 citation statements)

References 26 publications

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“…The third quartile value for CTDI vol in children aged 1–5 years was reported to be 66 mGy in Belgium and 71 mGy in France . Recently, the mean CTDI vol and DLP for temporal bone CT in children aged 1–5 years at a tertiary children's hospital in Japan was reported to be 21 mGy and 151 mGy·cm, respectively . The radiation exposure using the low‐dose protocol in our study (CTDI vol , 9.9 mGy; DLP, 59.6 mGy·cm) was lower than in the above reports.…”

Section: Discussioncontrasting

confidence: 65%

Imaging of the temporal bone in children using low‐dose 320‐row area detector computed tomography

et al. 2017

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Section: Discussioncontrasting

confidence: 65%

Imaging of the temporal bone in children using low‐dose 320‐row area detector computed tomography

et al. 2017

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“…Because in the present study only patients from one tertiary paediatric hospital were included, the findings obtained may not apply to all paediatric CT examinations across the country. Further studies are therefore crucial to develop a national DRL and update the current local DRL (Ploussi et al 2020 ; Nakada et al 2016 ).…”

Section: Discussionmentioning

confidence: 99%

Assessment of diagnostic reference levels for paediatric cardiac computed tomography in accordance with European guidelines

Hamad

Attalla

Amer

et al. 2023

Radiat Environ Biophys

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Recently, paediatric cardiac computed tomography (CCT) has caused concerns that diagnostic image quality and dose reduction may require further improvement. Consequently, this study aimed to establish institutional (local) diagnostic reference levels (LDRLs) for CCT for paediatric patients, and assess the impact of tube voltage on proposed DRLs in terms of the volume computed tomography index (CTDIvol) and dose length product (DLP). In addition, effective doses (EDs) of exposure were estimated. A population of 453 infants, whose mass and age were less than 12 kg and 2 years, respectively, were considered from January 2018 to August 2021. Based on previous studies, this number of patients was considered to be sufficient for establishing LDRLs. A group of 245 patients underwent CCT examinations at 70 kVp tube voltage with an average scan range of 23.4 cm. Another set of 208 patients underwent CCT examinations at 100 kVp tube voltage with an average scan range of 15.8 cm. The observed CTDIvol and DLP values were 2.8 mGy and 54.8 mGy.cm, respectively. The mean effective dose (ED) was 1.2 mSv. It is concluded that provisional establishment and use of DRLs for cardiac computed tomography in children are crucial, and further research is needed to develop regional and international DRLs.

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Estimation of Diagnostic Reference Levels and Achievable Doses for Pediatric Patients in Common Computed Tomography Examinations: A Multi-Center Study

Zamani

Kavousi

Masjedi

et al. 2021

Radiation Protection Dosimetry

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This study was conducted to determine first local diagnostic reference levels (DRLs) and achievable doses (ADs) for pediatric patients during the most common computed tomography (CT) procedures in Yazd province. The DRL was obtained based on volume CT dose index (CTDIvol) and dose length product (DLP) for four various age groups of children. Data were collected from the most commonly performed pediatric CT scans, including abdomen–pelvis, chest, brain and sinus examinations, at six high-loaded institutes. The patients’ data (766 no.) in terms of CTDIvol and DLP were obtained from four age groups: ≤1-, 1–5-, 5–10- and 10–15-y-old. The 75th percentiles of CTDIvol and DLP were considered as DRL values and the 50th percentiles were described as ADs for those parameters. Consequently, the acquired DRLs were compared with other national and international published values. The DRLs in terms of CTDIvol for abdomen–pelvis, chest, brain and sinus examinations were 3, 8, 9 and 10 mGy; 4, 5, 5 and 5 mGy; 25, 28, 29 and 38 mGy; and 23, 24, 26 and 27 mGy for four different age groups of ≤1-, 1–5-, 5–10- and 10–15-y-old, respectively. The DRL values in terms of DLP were 75, 302, 321 and 342 mGy.cm; 109, 112, 135 and 170 mGy.cm, 352, 355, 360 and 481 mGy.cm; and 206, 211, 228 and 245 mGy.cm, respectively, for the mentioned age groups. In this study, the DRL and AD values in the brain examination were greater among the other studied regions. The DRL plays a critical role in the optimization of radiation doses delivered to patients and in improving their protection. This study provides the local DRLs and ADs for the most common pediatric CT scanning in Yazd province to create optimum situation for the clinical practice.

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Optimised paediatric CT dose at a tertiary children's hospital in Japan: a 4-y single-centre analysis

Cited by 5 publications

References 26 publications

Imaging of the temporal bone in children using low‐dose 320‐row area detector computed tomography

Imaging of the temporal bone in children using low‐dose 320‐row area detector computed tomography

Assessment of diagnostic reference levels for paediatric cardiac computed tomography in accordance with European guidelines

Estimation of Diagnostic Reference Levels and Achievable Doses for Pediatric Patients in Common Computed Tomography Examinations: A Multi-Center Study

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