Occupational and patient exposure as well as image quality for full spine examinations with the EOS imaging system

Abstract

As a summary, the estimated effective dose was 290 μSv for an adult; the image quality remains comparable to conventional systems.

Radiography of scoliosis: Comparative dose levels and image quality between a dynamic flat-panel detector and a slot-scanning device (EOS system)

“…We did not perform such simulation in our study. Other studies have shown that with a mean entrance dose of 181 and 316 Gy with SSS and DFD respectively, effective doses range from 0.08 to 0.20 mSv [5,[19][20][21][22][23]. Given the skin entrance dose observed in our study, the dose ratio is better for the SSS.…”

“…The DQE standard from IEC mentions specifically that DQE is not suited and should not be evaluated for systems in which the X-ray field is scanned across the patient [25]. Evaluating SSS, Damet et al found a DQE peak around 13% (RQA5 and RQA7), but confirmed that DQE for SSS must not be directly compared to DQE values for 2D radiography systems [23]. Therefore, in our study we evaluated the quality of the two systems with another parameter, i.e.…”

EOS Micro-dose Protocol: First Full-spine Radiation Dose Measurements in Anthropomorphic Phantoms and Comparisons with EOS Standard-dose and Conventional Digital Radiology

“…We have been using the EOS scanner for full-spine examinations at our institution, since the fall of 2014. The EOS scanner uses a biplanar slot-scanning technology, which has been described in detail elsewhere [7][8][9][10] . The original version of the system had a standard low-dose protocol.…”

“…with regards to skin entrance dose 7,9,11 ; however, only a few studies have evaluated organ dose and full-body absorbed dose (effective dose) [10][11][12] .…”

A flexible patch based approach for combined denoising and contrast enhancement of digital X-ray images

“…Specifically, the noise at the detector is a combination of quantum and electronic noise that can be described, respectively, by Poisson and Gaussian distributions. However, as shown by Damet et al (2014), in EOS images the quantum noise contribution is predominant and, even at very low doses, the electronic noise is negligible. Therefore, the noise model can be approximated by a Poisson distribution.…”