ArticleEuropean radiology2018
Comparison of virtual monoenergetic and polyenergetic images reconstructed from dual-layer detector CT angiography of the head and neck.
Article in European radiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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20 citing papers in PubMed, 36 citations in OpenAlex.
- Spectral CTA-based quantitative differentiation of infarcted and non-infarcted ASPECTS regions in acute stroke.European radiology experimental · 2026Article
- Study on the combined application of selected virtual monoenergetic imaging, virtual non-contrast imaging, and adaptive statistical iterative reconstruction-V in head and neck CT angiography using 256-slice wide-body CT.Frontiers in medicine · 2026Article
- Correlation between perfusion and dual-layer spectral-detector CT in patients with cerebrovascular disorders.European radiology · 2025Article
- Influence of phantom design on evaluation metrics in photon counting spectral head CT: a simulation study.Journal of medical imaging (Bellingham, Wash.) · 2025Article
- Application of bolus tracking: The effect of ROI positions on the images quality of cervicocerebral CT angiography.Heliyon · 2024Article
- Nonenhanced Photon Counting CT of the Head : Impact of the keV Level, Iterative Reconstruction and Calvaria on Image Quality in Monoenergetic Images.Clinical neuroradiology · 2024Article
- Feasibility of using 8 mL of iodinated contrast media in cerebral computed tomographic angiography with a dual-layer spectral detector.Quantitative imaging in medicine and surgery · 2024Article
- The image quality and diagnostic performance of CT perfusion-derived CT angiography versus that of conventional CT angiography.Quantitative imaging in medicine and surgery · 2023Article
- Quantitative performance of photon-counting CT at low dose: Virtual monochromatic imaging and iodine quantification.Medical physics · 2023Article
- Image quality of spectral brain computed tomography angiography using halved dose of iodine contrast medium.Neuroradiology · 2023Article
- Improving visualization of free fibula flap perforators and reducing radiation dose in dual-energy CT angiography.Quantitative imaging in medicine and surgery · 2023Article
- Dual-Layer Detector Cone-Beam CT Angiography for Stroke Assessment: First-in-Human Results (the Next Generation X-ray Imaging System Trial).AJNR. American journal of neuroradiology · 2023Article
- Photon Counting CT Angiography of the Head and Neck: Image Quality Assessment of Polyenergetic and Virtual Monoenergetic Reconstructions.Diagnostics (Basel, Switzerland) · 2022Article
- Dual-Energy Parathyroid 4D-CT: Improved Discrimination of Parathyroid Lesions from Thyroid Tissue Using Noncontrast 40-keV Virtual Monoenergetic Images.AJNR. American journal of neuroradiology · 2021Article
- Generally applicable window settings of low-keV virtual monoenergetic reconstructions in dual-layer CT-angiography of the head and neck.Quantitative imaging in medicine and surgery · 2021Article
- Head and neck single- and dual-energy CT: differences in radiation dose and image quality of 2nd and 3rd generation dual-source CT.The British journal of radiology · 2021Article
- Dual-energy computed tomography of the neck-optimizing tube current settings and radiation dose using a 3D-printed patient phantom.Quantitative imaging in medicine and surgery · 2021Article
- Article
- Dual energy computed tomography virtual monoenergetic imaging: technique and clinical applications.The British journal of radiology · 2019Review
- Variation of degree of stenosis quantification using different energy level with dual energy CT scanner.Neuroradiology · 2019Article
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8 authors at 1 institution in 1 country.
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Abstract
objectivesTo compare the image quality of virtual monoenergetic images and polyenergetic images reconstructed from dual-layer detector CT angiography (DLCTA).
methodsThirty patients who underwent DLCTA of the head and neck were retrospectively identified and polyenergetic as well as virtual monoenergetic images (40 to 120 keV) were reconstructed. Signals (± SD) of the cervical and cerebral vessels as well as lateral pterygoid muscle and the air surrounding the head were measured to calculate the CNR and SNR. In addition, subjective image quality was assessed using a 5-point Likert scale. Student's t-test and Wilcoxon test were used to determine statistical significance.
resultsCompared to polyenergetic images, although noise increased with lower keV, CNR (p < 0.02) and SNR (p > 0.05) of the cervical, petrous and intracranial vessels were improved in virtual monoenergetic images at 40 keV and virtual monoenergetic images at 45 keV were also rated superior regarding vascular contrast, assessment of arteries close to the skull base and small arterial branches (p < 0.0001 each).
conclusionsCompared to polyenergetic images, virtual monoenergetic images reconstructed from DLCTA at low keV ranging from 40 to 45 keV improve the objective and subjective image quality of extra- and intracranial vessels and facilitate assessment of vessels close to the skull base and of small arterial branches. KEY POINTS: • Virtual monoenergetic images greatly improve attenuation, while noise only slightly increases. • Virtual monoenergetic images show superior contrast-to-noise ratios compared to polyenergetic images. • Virtual monoenergetic images significantly improve image quality at low keV.
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