Evidence map›Paper›PMID 41711871›Full record

ArticleNeuroradiology2026

Optimizing virtual monoenergetic imaging for dual‑energy CT venography assessment of intracranial venous sinus stents.

Joel Kosowan, Timothy Reynold Lim, Akhil Nair, Asutosh Sahu, Vinu Mathew, Yingming Amy Chen, Vitor Mendes Pereira, Nicole Cancelliere, Shobhit Mathur

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Article in Neuroradiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

9 authors.

Joel KosowanDepartment of Medical Imaging, St. Michael's Hospital, Toronto, Canada.
Timothy Reynold LimDepartment of Medical Imaging, St. Michael's Hospital, Toronto, Canada.
Akhil NairDepartment of Medical Imaging, St. Michael's Hospital, Toronto, Canada.
Asutosh SahuDepartment of Medical Imaging, St. Michael's Hospital, Toronto, Canada.
Vinu MathewDepartment of Medical Imaging, St. Michael's Hospital, Toronto, Canada.
Yingming Amy ChenDepartment of Medical Imaging, St. Michael's Hospital, Toronto, Canada.
Vitor Mendes PereiraDepartment of Neurosurgery, St. Michael's Hospital, Toronto, Canada.
Nicole CancelliereDepartment of Neurosurgery, St. Michael's Hospital, Toronto, Canada.
Shobhit MathurDepartment of Medical Imaging, St. Michael's Hospital, Toronto, Canada. Shobhit.Mathur@unityhealth.to.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo determine a practical virtual monoenergetic imaging (VMI) energy range that improves in‑stent lumen assessment and reduces metal‑related artifacts on dual‑energy CT venography (DECT‑CTV) after intracranial venous sinus stenting.

methodsRetrospective single‑center study including 10 patients (13 stents) who underwent DECT‑CTV after venous sinus stenting for idiopathic intracranial hypertension or pulsatile tinnitus. VMI series were reconstructed from 40 to 140 keV in 10‑keV increments. Two neuroradiologists independently scored in‑stent lumen visibility and beam‑hardening/streak artifacts (5‑point Likert). Quantitative analysis used standardized ROI measurements (3 in‑stent and 2 adjacent out‑of‑stent ROIs per stent per keV) and derived metrics including in‑stent attenuation, background noise, CNR, SNR, and dCT_in-out (in‑stent minus out‑of‑stent attenuation).

resultsQualitatively, both readers preferred intermediate‑high energies (90-100 keV) for overall interpretability. Quantitatively, in‑stent attenuation decreased from 1180.7 ± 245.5 HU (40 keV) to 112.5 ± 15.7 HU (140 keV). Noise and dCT_in-out decreased with increasing energy, whereas CNR decreased with increasing energy. SNR showed no statistically significant differences across energies.

conclusionFor intracranial venous sinus stents on DECT‑CTV, VMI around 90-100 keV provided the best perceived balance between lumen accessibility and artifact suppression. Findings require validation in larger cohorts with device‑specific subgroup analyses and complementary artifact indices.

Indexed as

Computed Tomography AngiographyCranial SinusesPhlebographyStentsAdultAgedArtifactsContrast MediaFemaleHumansMaleMiddle AgedPseudotumor CerebriRadiographic Image Interpretation, Computer-AssistedRadiography, Dual-Energy Scanned ProjectionRetrospective StudiesContrast MediaArtifactsDual‑Energy computed tomographyIdiopathic intracranial hypertensionVenous sinus stentingVirtual monoenergetic imaging

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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.