Publications by authors named "J Madjidyar"

Background: The patency of intracranial stents may not be reliably assessed with either CT angiography or MR angiography due to imaging artifacts. We investigated the potential of ultra-high resolution CT angiography using a photon counting detector (PCD) CT to address this limitation by optimizing scanning and reconstruction parameters.

Methods: A phantom with different flow diverters was used to optimize PCD-CT reconstruction parameters, followed by imaging of 14 patients with intracranial stents using PCD-CT.

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Article Synopsis
  • The contour neurovascular system (CNS) is a device used to treat specific types of brain aneurysms, but its metal components interfere with MRI imaging after implantation.
  • This study involved creating 3D models of aneurysms and testing different imaging methods, including CTA and MRI, to find effective non-invasive alternatives to the standard digital subtraction angiography (DSA).
  • Results showed that focused spectral CTA with metal artifact reduction provided clear imaging similar to DSA, making it a good option for follow-ups, while MRI was limited in assessing critical areas around the aneurysms post-implantation.
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Dynamic perviousness is a novel imaging biomarker, with clot density measurements at multiple timepoints to allow longer contrast to thrombus interaction. We investigated the correlations between dynamic perviousness and clot composition in the setting of acute ischemic stroke. Thirty-nine patients with large vessel occlusion (LVO) undergoing mechanical thrombectomy (MT) were analyzed.

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Background And Purpose: Assessing the treatment success of intracranial aneurysms treated with Woven EndoBridge (WEB) devices using MRI is important in follow-up imaging. Depicting both the device configuration as well as reperfusion is challenging due to susceptibility artifacts. We evaluated the usefulness of the contrast-enhanced 3D ultrashort TE (UTE) sequence in this setting.

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Background: The predictive value of thrombus standard perviousness (SP) in acute ischemic stroke (AIS) for the technical success rates of mechanical thrombectomy (MT) or functional outcomes is not yet conclusive. We investigated the relationship between dynamic perviousness (DP) and revascularization results using time-dependent enhancement curve types determined with computed tomography (CT).

Methods: A retrospective analysis of 137 AIS patients was performed.

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