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: | |
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: |