Size-specific dose estimates in pediatric brain CT in relation to age and weight

Autor:	Kaoru Fujii, Yusuke Inoue, Hiroyasu Itoh, Ryosuke Sasa, Hirofumi Hata, Kohei Mitsui
Rok vydání:	2023
Předmět:	Radiation Radiological and Ultrasound Technology Public Health Environmental and Occupational Health Radiology Nuclear Medicine and imaging General Medicine
Zdroj:	Radiation Protection Dosimetry.
ISSN:	1742-3406 0144-8420
DOI:	10.1093/rpd/ncad133
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2214d9949f0c54dc19d79227076e93c5 https://doi.org/10.1093/rpd/ncad133 Zobrazit plný text záznamu