Filtered By:
Specialty: Radiology
Procedure: Perfusion

This page shows you your search results in order of relevance.

Order by Relevance | Date

Total 713 results found since Jan 2013.

Predictors of ghost infarct core on baseline computed tomography perfusion in stroke patients with successful recanalization after mechanical thrombectomy
ConclusionsIn stroke patients achieving successful recanalization after MT, time interval from stroke onset to CTP and ischemic core volume are associated with the occurrence of GIC. Patients cannot be excluded from MT solely based on baseline CTP-derived ischemic core volume, especially for patients with a shorter onset time.Key Points• Ghost infarct core (GIC) was found in 15.7% of patients with acute ischemic stroke (AIS) in our study cohort.• GIC was associated with stroke onset time, volumetric parameters derived from CTP, and collateral status indicated by HIR.• Time interval from stroke onset to CTP scan and i...
Source: European Radiology - October 25, 2022 Category: Radiology Source Type: research

Acute Ischemic Stroke or Epileptic Seizure? Yield of CT Perfusion in a "Code Stroke" Situation FUNCTIONAL
CONCLUSIONS: CTP patterns helped to differentiate acute ischemic stroke from epileptic seizure in a "code stroke" situation. Our results indicate that a hyperperfusion pattern, especially if not restricted to a vascular territory, may suggest reconsideration of intravenous thrombolysis therapy.
Source: American Journal of Neuroradiology - January 11, 2021 Category: Radiology Authors: Lucas, L., Gariel, F., Menegon, P., Aupy, J., Thomas, B., Tourdias, T., Sibon, I., Renou, P. Tags: FUNCTIONAL Source Type: research

Large Culprit Plaque and More Intracranial Plaques Are Associated with Recurrent Stroke: A Case-Control Study Using Vessel Wall Imaging ADULT BRAIN
CONCLUSIONS: Large culprit plaque and more intracranial plaques were independently associated with recurrent stroke. Performing whole-brain vessel wall imaging may help identify patients with a higher risk of recurrent stroke.
Source: American Journal of Neuroradiology - February 4, 2022 Category: Radiology Authors: Wu, G., Wang, H., Zhao, C., Cao, C., Chai, C., Huang, L., Guo, Y., Gong, Z., Tirschwell, D. L., Zhu, C., Xia, S. Tags: ADULT BRAIN Source Type: research

Susceptibility-Weighted Imaging in Pediatric Arterial Ischemic Stroke: A Valuable Alternative for the Noninvasive Evaluation of Altered Cerebral Hemodynamics FELLOWS' JOURNAL CLUB
CONCLUSIONS: SWI-DTI mismatch predicts stroke progression in pediatric arterial ischemic stroke. SWI-hyperintense signal is not useful for predicting the development of malignant edema. SWI should be routinely added to the neuroimaging diagnostic protocol of pediatric arterial ischemic stroke.
Source: American Journal of Neuroradiology - April 10, 2015 Category: Radiology Authors: Polan, R. M., Poretti, A., Huisman, T. A. G. M., Bosemani, T. Tags: FELLOWS ' JOURNAL CLUB Source Type: research

Prediction of the Multisegment Clot Sign on Dynamic CT Angiography of Cardioembolic Stroke ADULT BRAIN
CONCLUSIONS: The presence of the multisegment clot sign on dynamic CTA specifically indicates intracranial large-artery occlusion caused by an embolism from a cardiac source, which may be useful for acute management and secondary prevention of stroke.
Source: American Journal of Neuroradiology - April 10, 2018 Category: Radiology Authors: Chen, Z., Shi, F., Zhang, M., Gong, X., Lin, L., Lou, M. Tags: ADULT BRAIN Source Type: research

Stroke Mimics in the Acute Setting: Role of Multimodal CT Protocol ADULT BRAIN
CONCLUSIONS: Multimodal CT demonstrated low sensitivity but high specificity in the diagnosis of stroke mimics in the acute setting. The high specificity of multimodal CT allows ruling out stroke and thereby avoiding unnecessary revascularization treatment in patients with diagnosis of a stroke mimic.
Source: American Journal of Neuroradiology - February 4, 2022 Category: Radiology Authors: Prodi, E., Danieli, L., Manno, C., Pagnamenta, A., Pravata, E., Roccatagliata, L., Städler, C., Cereda, C. W., Cianfoni, A. Tags: ADULT BRAIN Source Type: research

Mechanical Thrombectomy Using the New ERIC Retrieval Device Is Feasible, Efficient, and Safe in Acute Ischemic Stroke: A Swiss Stroke Center Experience INTERVENTIONAL
CONCLUSIONS: In this observational study, the new ERIC retrieval device was technically feasible, safe, and effective in acute ischemic stroke with large-vessel occlusion.
Source: American Journal of Neuroradiology - January 13, 2016 Category: Radiology Authors: Kahles, T., Garcia-Esperon, C., Zeller, S., Hlavica, M., Anon, J., Diepers, M., Nedeltchev, K., Remonda, L. Tags: INTERVENTIONAL Source Type: research

Computed tomography perfusion as a diagnostic tool for seizures after ischemic stroke
Conclusion CTP may improve sensitivity and specificity of cortical involvement for post-stroke seizures compared to NCCT.
Source: Neuroradiology - March 9, 2016 Category: Radiology Source Type: research

Analyzing Circle of Willis blood flow in ischemic stroke patients through 3D Stroke Arterial Flow Estimation.
Conclusions We present SAFE analysis for collecting detailed time-resolved cerebral arterial flow data in the entire Circle of Willis for IS. Further study with more cases may be important to test the clinical utilization of SAFE and helpful to the study of the underlying hemodynamics of stroke. PMID: 28530158 [PubMed - as supplied by publisher]
Source: Interventional Neuroradiology - May 24, 2017 Category: Radiology Tags: Interv Neuroradiol Source Type: research

Variability of Stroke Patients Meeting Endovascular Stroke Trial Criteria in a Non-Clinical Trial Setting
Conclusions The proportion of patients with acute stroke and large vessel occlusion presenting within eight hours that would meet radiological criteria for endovascular stroke trials varies considerably (62-100%) in a cohort outside of clinical trials from an academic comprehensive stroke center. Thus, the radiological criteria used for candidate selection in daily practice will greatly influence the proportion of patients treated with endovascular therapy.
Source: Journal of Neuroradiology - December 20, 2017 Category: Radiology Source Type: research

Variability of stroke patients meeting endovascular stroke trial criteria in a non-clinical trial setting
ConclusionsThe proportion of patients with acute stroke and large vessel occlusion presenting within 8 hours that would meet radiological criteria for endovascular stroke trials varies considerably (62–100%) in a cohort outside of clinical trials from an academic comprehensive stroke center. Thus, the radiological criteria used for candidate selection in daily practice will greatly influence the proportion of patients treated with endovascular therapy.
Source: Journal of Neuroradiology - July 5, 2018 Category: Radiology Source Type: research

Focal Hypoperfusion in Acute Ischemic Stroke Perfusion CT: Clinical and Radiologic Predictors and Accuracy for Infarct Prediction ADULT BRAIN
CONCLUSIONS: Compared with NCCT, perfusion CT doubles the sensitivity in detecting acute ischemic stroke. Focal hypoperfusion is independently predicted by stroke severity, cortical clinical deficits, nonlacunar supratentorial strokes, and shorter onset-to-imaging delays. A high proportion of patients with focal hypoperfusion developed infarction on subsequent imaging, as did some patients without focal hypoperfusion, indicating the complementarity of perfusion CT and MR imaging in acute ischemic stroke.
Source: American Journal of Neuroradiology - March 13, 2019 Category: Radiology Authors: Bill, O., Inacio, N. M., Lambrou, D., Wintermark, M., Ntaios, G., Dunet, V., Michel, P. Tags: ADULT BRAIN Source Type: research

Rule-based natural language processing for automation of stroke data extraction: a validation study
ConclusionsRule-based NLP has a moderate to good performance for stroke-related data extraction from free-text imaging reports. The algorithm ’s accuracy was affected by inconsistent report styles and lexicon among reporting radiologists.
Source: Neuroradiology - November 9, 2022 Category: Radiology Source Type: research

Combined Low-Dose Contrast-Enhanced MR Angiography and Perfusion for Acute Ischemic Stroke at 3T: A More Efficient Stroke Protocol EVIDENCE-BASED MEDICINE LEVEL 2
CONCLUSIONS: In patients with acute stroke, combined low-dose contrast-enhanced MRA and dynamic susceptibility contrast perfusion at 3T is feasible and results in significant scan time and contrast dose reductions.
Source: American Journal of Neuroradiology - June 11, 2014 Category: Radiology Authors: Nael, K., Meshksar, A., Ellingson, B., Pirastehfar, M., Salamon, N., Finn, P., Liebeskind, D. S., Villablanca, J. P. Tags: EVIDENCE-BASED MEDICINE LEVEL 2 Source Type: research