ULTRA-LOW-DOSE COMPUTED TOMOGRAPHY IN UROLITHIASIS—EFFECT OF AN ADDITIONAL TIN FILTER ON IMAGE QUALITY AND RADIATION DOSE

Autor:	Johannes Haubold, Sebastian Zensen, Youssef Erfanian, Nika Guberina, Marcel Opitz, Lino Morris Sawicki, Michael Forsting, Lale Umutlu, Jens M Theysohn
Rok vydání:	2021
Předmět:	Tomography Scanners X-Ray Computed Radiation Urolithiasis Radiological and Ultrasound Technology Tin Medizin Public Health Environmental and Occupational Health Humans Radiology Nuclear Medicine and imaging General Medicine Radiation Dosage Tomography X-Ray Computed
Zdroj:	Radiation Protection Dosimetry. 197:146-153
ISSN:	1742-3406 0144-8420
Popis:	To compare radiation dose and image quality of three CT-scanners using optimal dose protocols in patients with suspected urolithiasis regarding additional hardware (tin filter) and software (iterative reconstruction). Examinations from a single-source CT-scanner (A2) and a dual-source CT-scanner (DSCT) (A1) were compared to a tin filter DSCT (B) regarding dose-length product (DLP) and volume-weighted CT dose-index (CTDIvol). DLP of B was 51 and 53% lower in comparison to A1 and A2 (78.62, 159.20 and 165.80 mGy·cm, respectively; P 0.05). Inter-rater agreement regarding image quality was good for all CT-scanners (κ = 0.62). Modern CTs with a built-in tin filter allow a significant reduction of radiation exposure in patients with suspected urolithiasis by optimizing the X-ray spectrum.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b418c44f91822a278f8bc3e7f13e205f https://doi.org/10.1093/rpd/ncab180 Zobrazit plný text záznamu