Development of phantom for current modulation quality assurance test on computed tomography

Autor:	Gustavo E de Camargo, Glaube N Carneiro, Jessica V Real, Renato B Doro, Anna L M C Malthez
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. 199:1029-1033
ISSN:	1742-3406 0144-8420
DOI:	10.1093/rpd/ncad107
Popis:	Automatic tube current modulation (ATCM) in computed tomography (CT) is a powerful tool for reducing the dose delivery to the patient during the scan. A phantom is used to perform the ATCM quality control (QC) test, assessing how the CT system adapts the tube current as a function of object size. Considering quality assurance recommendations (Brazilian and international), we developed a dedicated phantom for the ATCM test. The phantom was built-in high-density polyethylene in a cylindric shape with three different sizes. To verify the applicability of this phantom, we tested it in two different CT scanners (Toshiba and Philips). The results demonstrated concordance between a discrete change in phantom size, and the corresponding change in the tube current, indicating that the CT system could adapt current when a discrete attenuation shift occurred. The developed phantom might be used in ATCM QC tests.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::12e729faec26ad534d180a420a33731d https://doi.org/10.1093/rpd/ncad107 Zobrazit plný text záznamu