ArticleMagnetic resonance in medicine2022
QQ-NET - using deep learning to solve quantitative susceptibility mapping and quantitative blood oxygen level dependent magnitude (QSM+qBOLD or QQ) based oxygen extraction fraction (OEF) mapping.
Article in Magnetic resonance in medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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
16 citing papers in PubMed, 29 citations in OpenAlex.
- A Generalized Approach to Solving Deep Learning-Based Quantitative Susceptibility Mapping and Quantitative Blood Oxygen Level Dependent Magnitude (QSM + qBOLD or QQ) for Oxygen Extraction Fraction (OEF) Mapping Across Diverse Acquisition Schemes.Magnetic resonance in medicine · 2026Article
- Noncontrast MRI Assessment of Oxygen Metabolism in Human Calf Muscles Using VSASL and ANN-Based GESSE.NMR in biomedicine · 2026Article
- Age dependence of brain oxygen metabolism in adults assessed by 3D constrained quantitative BOLD MRI.NeuroImage · 2026Article
- Elevated cerebral oxygen extraction fraction in Parkinson's disease correlates with motor impairment severity.Scientific reports · 2026Article
- Oxygen extraction fraction is differentially associated with pathological biomarkers in Alzheimer's disease and non-Alzheimer's dementias.Frontiers in neuroscience · 2026Article
- Comparison of Brain Oxygen Metabolic Parameters Between Constrained qBOLD and Whole-Brain Oximetric Methods at Baseline and in Response to a Physiologic Stimulus.NMR in biomedicine · 2025Article
- Oxygen extraction fraction in small vessel disease: relationship to disease burden and progression.Brain : a journal of neurology · 2025Article
- Sensitivity assessment of QSM+qBOLD (or QQ) in detecting elevated oxygen extraction fraction (OEF) in physiological change.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2025Article
- Multi-Echo Complex Quantitative Susceptibility Mapping and Quantitative Blood Oxygen Level-Dependent Magnitude (mcQSM + qBOLD or mcQQ) for Oxygen Extraction Fraction (OEF) Mapping.Bioengineering (Basel, Switzerland) · 2024Article
- Liver PDFF estimation using a multi-decoder water-fat separation neural network with a reduced number of echoes.European radiology · 2023Article
- Article
- Cerebral oxygen metabolism from MRI susceptibility.NeuroImage · 2023Review
- Cerebral oxygen extraction fraction declines with ventricular enlargement in patients with normal pressure hydrocephalus.Clinical imaging · 2023Article
- Assessing Cerebral Oxygen Metabolism Changes in Patients With Preeclampsia Using Voxel-Based Morphometry of Oxygen Extraction Fraction Maps in Magnetic Resonance Imaging.Korean journal of radiology · 2023Article
- LARO: Learned acquisition and reconstruction optimization to accelerate quantitative susceptibility mapping.NeuroImage · 2023Article
- Brain oxygen extraction and neural tissue susceptibility are associated with cognitive impairment in older individuals.Journal of neuroimaging : official journal of the American Society of Neuroimaging · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
12 authors at 1 institution in 1 country.
Funding
Abstract
purposeTo improve accuracy and speed of quantitative susceptibility mapping plus quantitative blood oxygen level-dependent magnitude (QSM+qBOLD or QQ) -based oxygen extraction fraction (OEF) mapping using a deep neural network (QQ-NET).
methodsThe 3D multi-echo gradient echo images were acquired in 34 ischemic stroke patients and 4 healthy subjects. Arterial spin labeling and diffusion weighted imaging (DWI) were also performed in the patients. NET was developed to solve the QQ model inversion problem based on Unet. QQ-based OEF maps were reconstructed with previously introduced temporal clustering, tissue composition, and total variation (CCTV) and NET. The results were compared in simulation, ischemic stroke patients, and healthy subjects using a two-sample Kolmogorov-Smirnov test.
resultsIn the simulation, QQ-NET provided more accurate and precise OEF maps than QQ-CCTV with 150 times faster reconstruction speed. In the subacute stroke patients, OEF from QQ-NET had greater contrast-to-noise ratio (CNR) between DWI-defined lesions and their unaffected contralateral normal tissue than with QQ-CCTV: 1.9 ± 1.3 vs 6.6 ± 10.7 (p = 0.03). In healthy subjects, both QQ-CCTV and QQ-NET provided uniform OEF maps.
conclusionQQ-NET improves the accuracy of QQ-based OEF with faster reconstruction.
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.