ArticleJournal of medical physics
The Impact of Attenuation Correction on Positron Emission Tomography/Computed Tomography and Positron Emission Tomography/Magnetic Resonance Image Quality: A Phantom Study.
Article in Journal of medical physics. 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
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Objective: The quality of positron emission tomography/computed tomography (PET/CT) and PET/magnetic resonance (MR) images is a critical factor affecting the diagnostic reliability of clinical studies. An image quality (IQ) phantom is used to evaluate PET IQ. This study aims to acquire PET IQ phantom images on PET/CT and PET/MR systems and investigate the effects of attenuation correction on IQ. Materials and Methods: The PET IQ phantom was filled with F-18 fluorodeoxyglucose to achieve a lesion/background ratio of 4/1. The phantom was imaged separately on two different PET/CT scanners and one PET/MR scanner. Region of interest (ROIs) was drawn on both raw and attenuation-corrected images. Contrast and contrast-to-noise ratios (CNRs) were calculated from ROI counts. Results: For the smallest lesion with a diameter of 10 mm without attenuation correction, the contrast values in PET/CT and PET/MR images were found to be 1.32, 1.68, and 1.76, respectively. In attenuation-corrected images of the same lesion, the contrast values were 1.55, 1.89, and 2.22, respectively. The CNR values for the attenuation-corrected 10 cm lesion were 13.92, 12.05, and 13.36, respectively. Conclusion: Attenuation correction significantly improved IQ, with attenuation-corrected images demonstrating higher contrast and CNR values.
Indexed as
Identifiers
What 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.