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Total 5918 results found since Jan 2013.

Angiography-based hemodynamic features predict recurrent ischemic events after angioplasty and stenting of intracranial vertebrobasilar atherosclerotic stenosis
ConclusionsIn patients with intracranial vertebrobasilar atherosclerosis treated with PTAS, preprocedural prolonged TTP of the target vessel and shortened trans-stenotic TTP difference were associated with stroke relapse. Q-DSA-defined hemodynamic parameters provided incremental predictive value over conventional parameters for stroke recurrence.Clinical relevance statementQuantitative DSA analysis enables intuitive observation and semi-quantitative evaluation of peri-therapeutic cerebral blood flow. More importantly, quantitative DSA –defined hemodynamic parameters have the potential for risk stratification of patients ...
Source: European Radiology - September 19, 2023 Category: Radiology Source Type: research

Reliability of tomographic 3D ultrasound in measuring internal carotid artery plaque volume
CONCLUSION: t3DUS is a reproducible imaging method and showed excellent agreement with the reference standard with respect to measuring CPV. These findings suggest that t3DUS has the potential to be a valuable non-invasive tool for assessing carotid plaque burden and predicting the risk of stroke.PMID:37722861 | DOI:10.1177/02841851231199222
Source: Acta Radiologica - September 18, 2023 Category: Radiology Authors: Adel Alzahrani Salahaden R Sultan Mohammed Aslam Source Type: research

Morphological characteristics of brain aneurysms among age groups
CONCLUSIONS: Younger patients have small unruptured and ruptured aneurysms, and ruptured aneurysms are mostly located in the MCA and ACOM. Older patients have larger and more irregular unruptured aneurysms, and ruptured aneurysms are mostly located in the PCOM and ACOM. An irregular morphology increases the risk of rupture in all age groups.PMID:37715650 | DOI:10.1177/15910199231201520
Source: Interventional Neuroradiology - September 16, 2023 Category: Radiology Authors: Sebastian Sanchez Muhammed Amir Essibayi Meredith Hickerson Diego J Ojeda Sami Al Kasab Shinichi Yoshimura Pascal M Jabbour Justin Mascitelli Michael R Levitt Hugo H Cuellar-Saenz Waleed Brinjikji Alejandro M Spiotta Amir Shaban Edgar A Samaniego Source Type: research

The role of fetal-type posterior cerebral artery in mediating occipital and thalamic perfusion: An arterial spin labeling MRI study
This study investigates the relationship between the presence of fPCA and arterial spin labeling (ASL) hyperperfusion patterns in the medial occipital cortex and thalami.
Source: Journal of Medical Imaging and Radiation Sciences - September 15, 2023 Category: Radiology Authors: Emilian Kalchev Tags: Clinical Perspectives Source Type: research

Clot-based time attenuation curve as a novel imaging predictor of mechanical thrombectomy functional outcome in acute ischemia stroke
ConclusionsThrombus TAC on CTP were found to be a promising new imaging biomarker to predict the outcomes of MT in AIS.Clinical relevance statementThis study revealed that clot-based time attenuation curve based on admission perfusion CT could reflect the permeability and composition of thrombus and, also, provide valuable information to predict the clinical outcomes of mechanical thrombectomy in patients with acute ischemia stroke.Key Points• Two time-attenuation curves distributions achieved strong correlations (|r|= 0.627, p <  0.001) with histopathological results.• The unimodal time-attenuation curve was ...
Source: European Radiology - September 14, 2023 Category: Radiology Source Type: research

Regarding "Automated Segmentation of Intracranial Thrombus on NCCT and CTA in Patients with Acute Ischemic Stroke Using a Coarse-to-Fine Deep Learning Model" letter
Source: American Journal of Neuroradiology - September 11, 2023 Category: Radiology Authors: Tortora, M., Pacchiano, F. Tags: letter Source Type: research

CT Perfusion Does Not Modify the Effect of Reperfusion in Patients with Acute Ischemic Stroke Undergoing Endovascular Treatment in the ESCAPE-NA1 Trial INTERVENTIONAL
CONCLUSIONS: CTP did not modify the effect of near-complete reperfusion on clinical outcomes. Thus, CTP cannot explain why some patients with near-complete reperfusion have poor clinical outcomes.
Source: American Journal of Neuroradiology - September 11, 2023 Category: Radiology Authors: Rex, N. B., McDonough, R. V., Ospel, J. M., Kashani, N., Sehgal, A., Fladt, J. C., McTaggart, R. A., Nogueira, R., Menon, B., Demchuk, A. M., Tymianski, M., Hill, M. D., Goyal, M., on behalf of the ESCAPE-NA1 Investigators Tags: INTERVENTIONAL Source Type: research

Intra-Arterial Thrombolysis is Associated with Delayed Reperfusion of Remaining Vessel Occlusions following Incomplete Thrombectomy INTERVENTIONAL
CONCLUSIONS: Rescue intra-arterial thrombolytics is associated with delayed reperfusion of remaining vessel occlusions following incomplete mechanical thrombectomy. The value of intra-arterial thrombolytics as a potential therapy for incomplete reperfusions after mechanical thrombectomy should be assessed in the setting of randomized controlled trials.
Source: American Journal of Neuroradiology - September 11, 2023 Category: Radiology Authors: Mujanovic, A., Kurmann, C. C., Serrallach, B. L., Dobrocky, T., Meinel, T. R., Windecker, D., Grunder, L., Beyeler, M., Seiffge, D. J., Pilgram-Pastor, S., Arnold, M., Piechowiak, E. I., Gralla, J., Fischer, U., Kaesmacher, J. Tags: INTERVENTIONAL Source Type: research

Philips presents CEUS application at Bubble Conference
Philips is introducing a new super contrast-enhanced ultrasound (CEUS) applicatio...Read more on AuntMinnie.comRelated Reading: Philips issues radiation warning for fluoroscopy, angiography systems Philips begins U.S./European direct-to-angio-suite trial for stroke Philips to unveil new ultrasound unit at ASE 2023 Philips secures FDA clearance for Lumify B-mode feature Philips highlights study supporting 'direct-to-angio' pathway
Source: AuntMinnie.com Headlines - September 8, 2023 Category: Radiology Source Type: news

ISCT 2023: LDCT plus AI effectively spots pediatric lung conditions
Low-dose chest CT combined with AI is effective for identifying pulmonary arteriovenou...Read more on AuntMinnie.comRelated Reading: IMV: CTA and LDCT procedures show five-year growth trend AI spots large vessel occlusions, predicts patient outcome Photon-counting CT improves image quality of coronary CTA CT angio offers late thrombectomy option to stroke patients CTA shows how statin treatment changes coronary plaque
Source: AuntMinnie.com Headlines - September 8, 2023 Category: Radiology Source Type: news