PMID- 37083027 OWN - NLM STAT- MEDLINE DCOM- 20230626 LR - 20230626 IS - 1742-3406 (Electronic) IS - 0144-8420 (Linking) VI - 199 IP - 10 DP - 2023 Jun 23 TI - SIZE-SPECIFIC DOSE ESTIMATES IN PEDIATRIC BRAIN CT IN RELATION TO AGE AND WEIGHT. PG - 1075-1081 LID - 10.1093/rpd/ncad133 [doi] AB - The size-specific dose estimate (SSDE) is used for radiation dose management in computed tomography (CT) and represents patient's absorbed dose more accurately than volume CT dose index. The relationship between SSDE and age or weight was investigated using 980 pediatric brain CT scans. Monolinear, power, and bilinear functions were fitted to the plots of SSDE against age or weight, and SSDE was estimated using the obtained functions. SSDE showed a biphasic increase with increasing age and weight: a rapid initial increase and subsequent a slow increase. Bilinear and power functions were successfully fitted to the plots, and mean estimation errors were close to 0, irrespective of the age or weight group. The standard SSDE values estimated from the obtained functions agreed well with the median values for each age or weight group. The curve-fitting method is expected to aid radiation dose management for pediatric brain CT using SSDE. CI - (c) The Author(s) 2023. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com. FAU - Fujii, Kaoru AU - Fujii K AD - Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara 252-0374, Japan. FAU - Inoue, Yusuke AU - Inoue Y AD - Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara 252-0374, Japan. FAU - Itoh, Hiroyasu AU - Itoh H AD - Department of Radiology, Kitasato University Hospital, Sagamihara 252-0329, Japan. FAU - Sasa, Ryosuke AU - Sasa R AD - Department of Radiology, Kitasato University Hospital, Sagamihara 252-0329, Japan. FAU - Hata, Hirofumi AU - Hata H AD - Department of Radiology, Kitasato University Hospital, Sagamihara 252-0329, Japan. FAU - Mitsui, Kohei AU - Mitsui K AD - Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara 252-0374, Japan. LA - eng PT - Journal Article PL - England TA - Radiat Prot Dosimetry JT - Radiation protection dosimetry JID - 8109958 SB - IM MH - Child MH - Humans MH - Radiation Dosage MH - Retrospective Studies MH - *Tomography, X-Ray Computed/methods EDAT- 2023/04/21 06:41 MHDA- 2023/06/26 06:41 CRDT- 2023/04/21 05:52 PHST- 2022/12/15 00:00 [received] PHST- 2023/02/24 00:00 [revised] PHST- 2023/03/21 00:00 [accepted] PHST- 2023/06/26 06:41 [medline] PHST- 2023/04/21 06:41 [pubmed] PHST- 2023/04/21 05:52 [entrez] AID - 7133666 [pii] AID - 10.1093/rpd/ncad133 [doi] PST - ppublish SO - Radiat Prot Dosimetry. 2023 Jun 23;199(10):1075-1081. doi: 10.1093/rpd/ncad133.