Tawfik Moher Alsady
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View article: Initial experience with the antithrombogenic-coated CARESTO stent for venous sinus stenting for idiopathic intracranial hypertension: A multicenter study
Initial experience with the antithrombogenic-coated CARESTO stent for venous sinus stenting for idiopathic intracranial hypertension: A multicenter study Open
Objectives To evaluate the feasibility, safety, and short-term efficacy of the antithrombogenic-coated CARESTO stent for venous sinus stenting (VSS) in idiopathic intracranial hypertension (IIH). Methods This retrospective multicenter stud…
View article: Initial experience with the antithrombogenic-coated CARESTO stent for acute symptomatic cervical internal carotid artery dissections: multicenter study
Initial experience with the antithrombogenic-coated CARESTO stent for acute symptomatic cervical internal carotid artery dissections: multicenter study Open
Objectives To evaluate the technical feasibility, safety, and short-term to mid-term efficacy of the antithrombogenic-coated CARESTO stent in the endovascular treatment of acute symptomatic cervical internal carotid artery dissections (CIC…
View article: Optimizing whole-body MRI for early cancer detection in Li-Fraumeni syndrome: a prospective bicentric study
Optimizing whole-body MRI for early cancer detection in Li-Fraumeni syndrome: a prospective bicentric study Open
Objectives Annual whole-body MRI (WB-MRI) is recommended for early cancer detection in individuals with Li-Fraumeni syndrome (LFS). However, there is no agreement on a standardized MRI protocol. This study evaluated the diagnostic performa…
View article: Comparison of pEGASUS-HPC and CREDO Heal stent systems deployed via NeuroSpeed percutaneous angioplasty balloon catheter for treatment of acute symptomatic intracranial stenosis and occlusion
Comparison of pEGASUS-HPC and CREDO Heal stent systems deployed via NeuroSpeed percutaneous angioplasty balloon catheter for treatment of acute symptomatic intracranial stenosis and occlusion Open
Purpose To compare the efficacy and safety of the pEGASUS-HPC and CREDO heal coated stent systems used with the NeuroSpeed percutaneous angioplasty (PTA) balloon catheter, for treating acute symptomatic intracranial artery stenosis (ICAS) …
View article: Stent-assisted coiling using the pEGASUS-HPC stent for acutely ruptured wide-necked intracranial aneurysms: A multicenter retrospective study
Stent-assisted coiling using the pEGASUS-HPC stent for acutely ruptured wide-necked intracranial aneurysms: A multicenter retrospective study Open
Background Stent-assisted coiling (SAC) is increasingly used to treat ruptured wide-necked intracranial aneurysms. The pEGASUS-HPC stent, featuring a hydrophilic polymer coating (HPC) to reduce thrombogenicity, may offer a safe option in s…
View article: Free-breathing 3D phase-resolved functional lung MRI vs breath-hold hyperpolarized 129Xe ventilation MRI in patients with chronic obstructive pulmonary disease and healthy volunteers
Free-breathing 3D phase-resolved functional lung MRI vs breath-hold hyperpolarized 129Xe ventilation MRI in patients with chronic obstructive pulmonary disease and healthy volunteers Open
View article: Estimating ventilation correlation coefficients in the lungs using <scp>PREFUL‐MRI</scp> in <scp>chronic obstructive pulmonary disease</scp> patients and healthy adults
Estimating ventilation correlation coefficients in the lungs using <span>PREFUL‐MRI</span> in <span>chronic obstructive pulmonary disease</span> patients and healthy adults Open
Purpose Various parameters of regional lung ventilation can be estimated using phase‐resolved functional lung (PREFUL)‐MRI. The parameter “ventilation correlation coefficient (Vent‐CC)” was shown advantageous because it assesses the dynami…
View article: Comparison of Free‐Breathing <scp>3D</scp> Phase‐Resolved Functional Lung (<scp>PREFUL</scp>) <scp>MRI</scp> With Dynamic <scp><sup>19</sup>F</scp> Ventilation <scp>MRI</scp> in Patients With Obstructive Lung Disease and Healthy Volunteers
Comparison of Free‐Breathing <span>3D</span> Phase‐Resolved Functional Lung (<span>PREFUL</span>) <span>MRI</span> With Dynamic <span><sup>19</sup>F</span> Ventilation <span>MRI</span> in Patients With Obstructive Lung Disease and Healthy Volunteers Open
Background Non‐contrast‐enhanced 1 H magnetic resonance imaging (MRI) with full lung coverage shows promise for assessment of regional lung ventilation but a comparison with direct ventilation measurement using 19 F MRI is lacking. Purpose…
View article: Multicenter Standardization of Phase‐Resolved Functional Lung <scp>MRI</scp> in Patients With Suspected Chronic Thromboembolic Pulmonary Hypertension
Multicenter Standardization of Phase‐Resolved Functional Lung <span>MRI</span> in Patients With Suspected Chronic Thromboembolic Pulmonary Hypertension Open
Background Detection of pulmonary perfusion defects is the recommended approach for diagnosing chronic thromboembolic pulmonary hypertension (CTEPH). This is currently achieved in a clinical setting using scintigraphy. Phase‐resolved funct…
View article: Artificially-generated consolidations and balanced augmentation increase performance of U-net for lung parenchyma segmentation on MR images
Artificially-generated consolidations and balanced augmentation increase performance of U-net for lung parenchyma segmentation on MR images Open
Purpose To improve automated lung segmentation on 2D lung MR images using balanced augmentation and artificially-generated consolidations for training of a convolutional neural network (CNN). Materials and methods From 233 healthy voluntee…
View article: Examining lung microstructure using <scp><sup>19</sup>F MR</scp> diffusion imaging in <scp>COPD</scp> patients
Examining lung microstructure using <span><sup>19</sup>F MR</span> diffusion imaging in <span>COPD</span> patients Open
Purpose To examine the time‐dependent diffusion of fluorinated ( 19 F) gas in human lungs for determination of surface‐to‐volume ratio in comparison to results from hyperpolarized 129 Xe and lung function testing in healthy volunteers and …
View article: Phantom study for comparison between computed tomography- and C-Arm computed tomography-guided puncture applied by residents in radiology
Phantom study for comparison between computed tomography- and C-Arm computed tomography-guided puncture applied by residents in radiology Open
Purpose Comparison of puncture deviation and puncture duration between computed tomography (CT)- and C-arm CT (CACT)-guided puncture performed by residents in training (RiT). Methods In a cohort of 25 RiTs enrolled in a research training p…
View article: Comparison of dual-energy computer tomography and dynamic contrast-enhanced MRI for evaluating lung perfusion defects in chronic thromboembolic pulmonary hypertension
Comparison of dual-energy computer tomography and dynamic contrast-enhanced MRI for evaluating lung perfusion defects in chronic thromboembolic pulmonary hypertension Open
Objectives To evaluate the agreement in detecting pulmonary perfusion defects in patients with chronic thromboembolic pulmonary hypertension using dual-energy CT and dynamic contrast-enhanced MRI. Second, to compare both imaging modalities…
View article: Repeatability of dynamic <scp>3D</scp> phase‐resolved functional lung (PREFUL) ventilation <scp>MR</scp> Imaging in patients with chronic obstructive pulmonary disease and healthy volunteers
Repeatability of dynamic <span>3D</span> phase‐resolved functional lung (PREFUL) ventilation <span>MR</span> Imaging in patients with chronic obstructive pulmonary disease and healthy volunteers Open
Background A previous study has demonstrated the feasibility of 3D phase‐resolved functional lung (PREFUL) MRI in healthy volunteers and patients with chronic pulmonary disease. Before clinical use, the repeatability of the ventilation par…
View article: Flow Volume Loop and Regional Ventilation Assessment Using Phase‐Resolved Functional Lung (<scp>PREFUL</scp>) <scp>MRI</scp>: Comparison With <scp><sup>129</sup>Xenon</scp> Ventilation <scp>MRI</scp> and Lung Function Testing
Flow Volume Loop and Regional Ventilation Assessment Using Phase‐Resolved Functional Lung (<span>PREFUL</span>) <span>MRI</span>: Comparison With <span><sup>129</sup>Xenon</span> Ventilation <span>MRI</span> and Lung Function Testing Open
Background Regional flow volume loop ventilation‐weighted noncontrast‐enhanced proton lung MRI in free breathing has emerged as a novel technique for assessment of regional lung ventilation, but has yet not been validated with 129 Xenon MR…
View article: A picture is worth a thousand words: linking fibromyalgia pain widespreadness from digital pain drawings with pain catastrophizing and brain cross-network connectivity
A picture is worth a thousand words: linking fibromyalgia pain widespreadness from digital pain drawings with pain catastrophizing and brain cross-network connectivity Open
Pain catastrophizing is prominent in chronic pain conditions such as fibromyalgia and has been proposed to contribute to the development of pain widespreadness. However, the brain mechanisms responsible for this association are unknown. We…
View article: Association Between Use of ACE Inhibitors and Pulmonary Microvascular Perfusion on MRI
Association Between Use of ACE Inhibitors and Pulmonary Microvascular Perfusion on MRI Open
View article: Comparison of MRI and VQ-SPECT as a Screening Test for Patients With Suspected CTEPH: CHANGE-MRI Study Design and Rationale
Comparison of MRI and VQ-SPECT as a Screening Test for Patients With Suspected CTEPH: CHANGE-MRI Study Design and Rationale Open
The diagnostic strategy for chronic thromboembolic pulmonary hypertension (CTEPH) is composed of two components required for a diagnosis of CTEPH: the presence of chronic pulmonary embolism and an elevated pulmonary artery pressure. The cu…
View article: Investigating short‐time diffusion of hyperpolarized <sup>129</sup>Xe in lung air spaces and tissue: A feasibility study in chronic obstructive pulmonary disease patients
Investigating short‐time diffusion of hyperpolarized <sup>129</sup>Xe in lung air spaces and tissue: A feasibility study in chronic obstructive pulmonary disease patients Open
Purpose To investigate the diffusion of hyperpolarized 129 Xe in air spaces at short‐time scales for determination of lung surface‐to‐gas‐volume ratio in comparison to results from chemical shift saturation recovery, CT, and established cl…
View article: Validation of Automated Perfusion‐Weighted Phase‐Resolved Functional Lung (PREFUL)‐MRI in Patients With Pulmonary Diseases
Validation of Automated Perfusion‐Weighted Phase‐Resolved Functional Lung (PREFUL)‐MRI in Patients With Pulmonary Diseases Open
Background Perfusion‐weighted (Qw) noncontrast‐enhanced proton lung MRI is a promising technique for assessment of pulmonary perfusion, but still requires validation. Purpose To improve perfusion‐weighted phase‐resolved functional lung (PR…
View article: MICA—A toolbox for masked independent component analysis of fMRI data
MICA—A toolbox for masked independent component analysis of fMRI data Open
Independent component analysis (ICA) is a widely used technique for investigating functional connectivity (fc) in functional magnetic resonance imaging data. Masked independent component analysis (mICA), that is, ICA restricted to a define…