ArticleRadiological physics and technology2026
Intra-vendor inter-scanner agreement of negative-HU measurements on fast kV-switching dual-energy CT virtual monoenergetic imaging: a phantom study.
Article in Radiological physics and technology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
Abstract
The purpose of this study was to evaluate inter-scanner agreement and the dose-related stability of negative CT-number measurements on dual-energy CT virtual monoenergetic images under low-, mid-, and high-dose conditions. A custom phantom (sawdust, salad oil, cutting-fluid dilutions 100%-3%, and water) was scanned on two CT systems (Revolution CT and Discovery CT750 HD). DECT VMI (40-140 keV) was acquired at three CTDIvol-defined dose levels with five repeats per condition; CT numbers were measured using standardized central ROIs. Negative-HU materials increased monotonically with increasing keV on both scanners. At 70 keV, inter-scanner bias (ΔHU = Revolution - 750HD) increased as HU became more negative (r = 0.840), with an overall mean bias of - 3.57 HU and 95% limits of agreement of - 16.90 to 9.75 HU. The largest discrepancies were for sawdust (- 18.70 to - 20.09 HU). Water reference behavior differed by scanner and dose (Mean(|HU|) across 40-140 keV: 0.223 HU for Revolution vs. 2.464 HU for 750HD at low dose; 750HD remained offset at mid-high dose (2.319-2.508 HU). Dose stability at 70 keV was generally high, but 750HD showed low-dose deviations for 20% and 30% (ranges 12.13 and 12.27 HU) that diminished at mid-high dose. VMI shows predictable energy-dependent behavior for negative-HU materials, but inter-scanner bias increases for strongly negative values and low-dose conditions, and water-reference behavior can influence stability; scanner-aware interpretation and phantom-based harmonization are warranted for quantitative evaluation in the negative HU range.
Indexed as
Identifiers
42435270What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.