A dose–neutral image quality comparison of different CBCT and CT systems using paranasal sinus imaging protocols and phantoms

• DOI: 10.1007/s00405-022-07271-4
• Publication Date: 2022-01-27T09:03:01Z
• Authors: Ari-Petteri Ronka...; Ali Al-Gburi; Timo Liimatainen; Hanna Matikka
• Keywords: Hounsfield scale; Image noise

To compare the image quality produced by equivalent low-dose and default sinus imaging protocols of a conventional dental cone-beam computed tomography (CBCT) scanner, an extremity CBCT scanner clinical multidetector (MDCT) scanner.Three different phantoms were scanned using dose-neutral ultra-low-dose protocols, as well each device. Quantified parameters included modulation transfer function (MTF) to characterize spatial response system, contrast-to-noise ratio, low contrast visibility, uniformity Hounsfield unit accuracy. MTF was calculated line spread edge functions (LSF ESF).The had superior performance over in studied parameter at similar dose levels. The MDCT better visibility than scanners. However, scanners resolution compared MDCT. Accuracy HU values for materials on same level between MDCT, but substantially poorer observed with CBCT.The showed when protocols. In case is not available, given still viable option it provides benefit high