Filtered By:
Source: Medicine
Procedure: Perfusion

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

Order by Relevance | Date

Total 18 results found since Jan 2013.

Brain perfusion single photon emission computed tomography abnormality in MRI-negative stroke-like patients post COVID-19 vaccination
Stroke-like symptoms after COVID-19 vaccination was thought to be functional if there was no anatomical image abnormality. We aimed to analyze brain perfusion changes in these patients. A case-control study of brain perfusion single photon emission computed tomography (SPECT) of 12 vaccinated patients with left-sided stroke-like symptoms were compared with 12 age- and gender-matched normal interictal brain SPECTs using voxel-based analysis. Significant hyperperfusion was seen on the right side in postcentral, inferior parietal, mid temporal, parahippocampal, and caudate regions, and on the left side in the thalamus, hippoc...
Source: Medicine - November 25, 2022 Category: Internal Medicine Tags: Research Article: Observational Study Source Type: research

Benefits of esmolol in adults with sepsis and septic shock: An updated meta-analysis of randomized controlled trials
Conclusions: Esmolol treatment may be safe and effective in decreasing 28-day mortality, controlling heart rate, and providing cardioprotective function, but has no effect on lung injury in patients with sepsis or septic shock after early fluid resuscitation. Improvement in cardiac function may be related to changes in serum inflammatory mediators. No significant adverse effects on tissue perfusion and oxygen utilization were observed.
Source: Medicine - July 8, 2022 Category: Internal Medicine Tags: Research Article: Systematic Review and Meta-Analysis Source Type: research

The diagnostic reliability and validity of noninvasive imaging modalities to assess leptomeningeal collateral flow for ischemic stroke patients: A systematic review and meta-analysis
Leptomeningeal collateral flow (LMF) is associated with infarct area and clinical outcome for ischemic stroke patients. Although LMF can be detected by multiple imaging methods, but their diagnostic performance is uncertain. The aim of this study was to evaluate the diagnostic validity or reliability of noninvasive image methods in assessing LMF. Databases included PubMed, Web of Science, Embase, and Cochrane Library. Original observational cohort studies. Ischemic stroke patients. Different noninvasive image methods to assess LMF. Newcastle–Ottawa Scale to evaluate the quality of the studies; forest pl...
Source: Medicine - May 7, 2021 Category: Internal Medicine Tags: Research Article: Meta-Analysis of Observational Studies in Epidemiology Source Type: research

Perfusion image guided mechanical thrombectomy combined with tirofiban successfully revascularize systemic lupus erythematosus related acute large vessel occlusion: A case report
Rationale: Systemic lupus erythematosus (SLE) is an important cause of stroke, more than a half the cases present as acute ischemic stroke. Thrombolysis is an effective choice in most cases, but for large vessel occlusion, mechanical thrombectomy is more effective. Here we reported a case of SLE-related stroke with left middle cerebral artery (MCA) occlusion, who was successfully treated by MT and tirofiban. Patient concern: A 38-year-old female suffered from right hemiplegia and aphasia for 8 hours. She was diagnosed with SLE 20 years ago, and neuropsychiatric SLE was considered 8 months before this onset...
Source: Medicine - May 7, 2021 Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research

Effectiveness and safety of traditional Chinese medicine in the treatment of senile hypotension: A protocol for systematic review and meta-analysis
Conclusions: The conclusions of our study will provide an evidence to judge whether TCM is an effective and safe intervention for patients with senile hypotension. Ethics and dissemination: This systematic review will be disseminated in a peer-reviewed journal or presented at relevant conferences. It is not necessary for a formal ethical approval because the data are not individualized. Trial registration number: INPLASY2020110091.
Source: Medicine - April 23, 2021 Category: Internal Medicine Tags: Research Article: Study Protocol Systematic Review Source Type: research

Predictive value of Alberta stroke program early CT score for perfusion weighted imaging - diffusion weighted imaging mismatch in stroke with middle cerebral artery occlusion
This study aimed to quantitatively assess the consistency and correlation between perfusion weighted imaging (PWI)/ diffusion weighted imaging (DWI) Alberta Stroke Program Early CT Score (ASPECTS) mismatch and PWI/DWI mismatch. Sixty-eight acute ischemic stroke with middle cerebral artery occlusion who underwent magnetic resonance imaging before thrombectomy were eligible. DWI volume, PWI volume and PWI-DWI mismatch were measured. DWI-, PWI-, PWI-DWI ASPECTS were evaluated. Statistical analysis was performed to compare the correlation between volume and ASPECTS of DWI-, PWI- and PWI-DWI mismatch. Receiver operating char...
Source: Medicine - December 11, 2020 Category: Internal Medicine Tags: Research Article: Observational Study Source Type: research

Hemichorea-hemiballismus as the initial manifestation of symptomatic middle cerebral artery dissection: A case report
Conclusion: Prompt recognition of acute onset hemichorea-hemiballismus as the manifestation of acute ischemic stroke in appropriate clinical setting may reduce diagnostic delay. Multiple imaging techniques including cerebral digital subtraction angiography and HR-MRI can be applied to diagnosis and further clarify the mechanism of stroke, which facilitate in selection of secondary prevention therapies.
Source: Medicine - September 4, 2020 Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research

Systematic review with network meta-analysis: Diagnostic values of ultrasonography, computed tomography, and magnetic resonance imaging in patients with ischemic stroke
Conclusion: This network meta-analysis provides supporting evidence to the idea that DWI has a higher diagnostic value regarding ischemic stroke among MRI methods, and CTP has a poor diagnostic value among CT methods, which provide therapeutic considerations for Ischemic stroke intervention.
Source: Medicine - July 1, 2019 Category: Internal Medicine Tags: Research Article: Systematic Review and Meta-Analysis Source Type: research

The effects of diffusion and perfusion MRI mismatch on the admission blood glucose and blood pressure values measured in the first 12 hours of acute stroke
In this study, we examined the relationship between the presence of diffusion-weighted imaging (DWI)/perfusion-weighted imaging (PWI) mismatch, admission blood glucose level, and admission blood pressure level in patients who were admitted in the first 12 hours after onset. We studied 212 patients who were prospectively and consecutively registered to the stroke unit from 2006 to 2009. Correlations between mismatch and admission blood pressure level (ABPL) and admission blood glucose level (ABGL) were analyzed using multivariate logistic regression. Mismatch (P = .064, adjusted OR = 2.297, 95% CI, 0.953–5.536) wa...
Source: Medicine - June 1, 2019 Category: Internal Medicine Tags: Research Article: Observational Study Source Type: research

Middle cerebral artery stenosis is associated with the increased risk of intracerebral hemorrhage in Chinese: A retrospective study
In conclusion, MCA stenosis, especially moderate MCA stenosis, is associated with ICH in the LLA territory in Chinese.
Source: Medicine - April 1, 2019 Category: Internal Medicine Tags: Research Article: Observational Study Source Type: research

Clinical application of susceptibility-weighted imaging in the evaluation of leptomeningeal collateralization
The feasibility of using susceptibility-weighted imaging (SWI) in a clinical setting was assessed for quantifying leptomeningeal collateralization. Eighteen patients with stroke and acute infarction underwent diffusion-weighted imaging, SWI, perfusion-weighted imaging, and magnetic resonance angiography within 3 days after symptom onset. Lesions were evaluated by the Alberta Stroke Program Early CT score (ASPECTS), based on mean transit time, SWI, and cerebral blood volume (CBV). For evaluating ischemic penumbra and leptomeningeal collateralization, the SWI-ASPECTS significantly correlated, respectively, with mean transi...
Source: Medicine - December 1, 2018 Category: Internal Medicine Tags: Research Article: Observational Study Source Type: research

Discrepancy between perfusion- and diffusion-weighted images in ischemic stroke: A case report
Rationale: With the development of multi-slice computed tomography (CT) technology, perfusion CT angiography (p-CTA) is now widely used for the diagnosis of acute cerebral infarction. Although p-CTA has the advantage of distinguishing between an ischemic penumbra and an infarct core, more research is needed with respect to its clinical use. Patient concerns: A healthy 36-year-old man experienced sudden dizziness while swimming. His dizziness persisted irrespective of the change in position, and then improved during transport. He had no neurological abnormality when he arrived at the emergency room. Diagnoses: CT pe...
Source: Medicine - December 1, 2018 Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research

Rationale and design of a randomized trial of early intensive blood pressure lowering on cerebral perfusion parameters in thrombolysed acute ischemic stroke patients
Conclusion: This randomized study will provide important information about the physiological effects of BP reduction on cerebral perfusion after intravenous thrombolysis in AIS.
Source: Medicine - October 1, 2018 Category: Internal Medicine Tags: Research Article: Study Protocol Clinical Trial Source Type: research

Preliminary study of time maximum intensity projection computed tomography imaging for the detection of early ischemic change in patient with acute ischemic stroke
This study aimed to assess the accuracy of time maximum intensity projection computed tomography technique (tMIP), which reflects the maximum value for the time phase direction from the dynamic volume data for each projected plane, for detection of EIC, against that of NCCT. Retrospective review of NCCT, cerebral blood volume in CT perfusion (CTP-CBV), and tMIP of 186 lesions from 280 regions evaluated by Alberta Stroke Program Early CT Score (ASPECTS) in 14 patients with acute middle cerebral artery stroke who had undergone whole-brain CTP using 320-row area detector CT was performed. Four radiologists reviewed EIC on NC...
Source: Medicine - March 1, 2018 Category: Internal Medicine Tags: Research Article: Quality Improvement Study Source Type: research

Degeneration of paramedian nuclei in the thalamus induces Holmes tremor in a case of artery of Percheron infarction
Abstract Rationale: Holmes’ tremor is an uncommon neurologic disorder following brain insults, and its pathogenesis is undefined. The interruption of the dento-rubro-thalamic tract and secondary deterioration of the nigrostriatal pathway are both required to initiate Holmes’ tremor. We used nuclear medicine imaging tools to analyze a patient with concurrent infarction in different zones of each side of the thalamus. Finding whether the paramedian nuclear groups of the thalamus were injured was a decisive element for developing Holmes’ tremor. Patient concerns: A 36-year-old woman was admitted to our department d...
Source: Medicine - November 1, 2017 Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research