scholarly journals Perfusion Computed Tomography in Transient Ischemic Attack

2011 ◽  
Vol 68 (1) ◽  
Author(s):  
Shyam Prabhakaran ◽  
Sohal K. Patel ◽  
Jordan Samuels ◽  
Bethany McClenathan ◽  
Yousef Mohammad ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Transient Ischemic Attack ◽  
Perfusion Computed Tomography ◽  
Ischemic Attack

scholarly journals Subclinical rhythmic electrographic discharge in adults: an atypical evolution

1995 ◽  
Vol 53 (2) ◽  
pp. 266-269 ◽  
Author(s):  
Délrio F. Silva ◽  
Edmar Zanoteli ◽  
Márcia Marques Lima ◽  
Renato Anghinah ◽  
José Geraldo C. Lima
Keyword(s):  
Computed Tomography ◽  
Cerebrospinal Fluid ◽  
Transient Ischemic Attack ◽  
Computed Tomography Scan ◽  
Ischemic Attack ◽  
Tomography Scan

The subclinical rhythmic electrographic discharge in adults (SREDA) has been rarely reported. We describe the case of a 71 year-old man with transient ischemic attack, whose EEG showed an atypical evolution of this uncommon pattern. The computed tomography scan and cerebrospinal fluid were normal. We are not aware of any other report in the literature with this atypical evolution of SREDA.

Cardiac computed tomography findings in 76 consecutive patients with suspected cardiogenic transient ischemic attack or stroke

2007 ◽  
Vol 119 ◽  
pp. S26
Author(s):  
Petri Sipola ◽  
Pekka Jäkälä ◽  
Marja Hedman ◽  
Keijo Peuhkurinen ◽  
Hannu Manninen ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Transient Ischemic Attack ◽  
Cardiac Computed Tomography ◽  
Ischemic Attack

Abstract P140: Do Perfusion Computed Tomography Abnormalities in Patients With Transient Ischemic Attack Predict Subsequent Ischemic Stroke and Cardiovascular Event

Stroke ◽  
2021 ◽  
Vol 52 (Suppl_1) ◽  
Author(s):  
Aisha Abdulrazaq ◽  
Muhammad F Ishfaq ◽  
Sachin Bhagavan ◽  
Ammad Ishfaq ◽  
Brandi R French ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Ischemic Stroke ◽  
Cardiovascular Events ◽  
Ct Perfusion ◽  
Mean Transit Time ◽  
Imaging Protocol ◽  
Perfusion Computed Tomography ◽  
Blood Flow Reduction ◽  
Ischemic Attack

Background and purpose: To determine if computed tomography (CT) perfusion (CTP) abnormalities in patients with transient ischemic attacks (TIA) are associated with development of ischemic strokes or adverse cardiovascular events within 24 months. Methods: Patients with a diagnosis of TIA who underwent CTP within 24 hours of symptom onset as part of the stroke/TIA imaging protocol were analysed. Abnormality was defined as an area of well demarcated mean transit time delay and/or cerebral blood flow reduction corresponding to an arterial territory as identified by an independent neuroradiologist. The patients were followed for at least 3 months and up to 24 months to identify occurrence of ischemic stroke and cardiovascular events (myocardial infarction or ischemia). Results: A total of 78 patients (mean age 67.60 +/- 15.1 ; 48 were men) with a diagnosis of TIA. A total of 17 patients (22%) had documented CTP abnormalities. Patients with CTP abnormalities were older and more likely to be men. There was no difference in the rates of ischemic stroke (5.9 % vs 3.3 %), or cardiovascular events (0% versus 1.6 %) when patients with CTP abnormalities were compared to those with normal CTP. Conclusions: In patients with TIA, an abnormal CTP does not predict the occurence of new ischemic stroke or cardiovascular events during follow up.

scholarly journals Head Computed Tomography Findings Predict Short-Term Stroke Risk After Transient Ischemic Attack

Stroke ◽  
2003 ◽  
Vol 34 (12) ◽  
pp. 2894-2898 ◽  
Author(s):  
Vanja C. Douglas ◽  
Clarissa M. Johnston ◽  
Jacob Elkins ◽  
Stephen Sidney ◽  
Daryl R. Gress ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Transient Ischemic Attack ◽  
Stroke Risk ◽  
Short Term ◽  
Ischemic Attack ◽  
Head Computed Tomography

Computed tomography perfusion in stroke mimics

2019 ◽  
Vol 15 (3) ◽  
pp. 299-307 ◽  
Author(s):  
James E Siegler ◽  
Jon Rosenberg ◽  
Daniel Cristancho ◽  
Andrew Olsen ◽  
Johannes Pulst-Korenberg ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Transient Ischemic Attack ◽  
Clinical Symptoms ◽  
Treatment Decision ◽  
Residue Function ◽  
Stroke Treatment ◽  
Computed Tomography Perfusion ◽  
Treatment Decision Making ◽  
Stroke Mimic ◽  
Ischemic Attack

Objective To describe the prevalence and patterns of abnormal findings on automated computed tomography perfusion in patients with stroke mimic. Methods We reviewed a retrospective multi-site cohort of consecutive patients undergoing computed tomography perfusion for suspected acute ischemic stroke within 24 h from last normal (June 2017 to December 2017). The primary outcome was the diagnosis of stroke mimic. Hypoperfusion abnormalities on iSchemaView RAPID automated computed tomography perfusion were compared between patients with stroke/transient ischemic attack and stroke mimic using mixed-effects multivariable logistic regression, focusing on absence of perfusion abnormalities and discordance with clinical symptoms and computed tomography angiography findings. Results Of 410 consecutive patients who underwent computed tomography perfusion, 348 met inclusion criteria (178 (51%) stroke, 19 (6%) transient ischemic attack, and 151 (43%) mimic). Time-to-maximum of the tissue residue function (Tmax>6s) abnormalities were seen in 42 (28%) patients with stroke mimic and 122 (62%) patients with stroke/transient ischemic attack ( p < 0.001). Patients with stroke mimic were more likely to have a normal Tmax pattern (volume = 0mL; adjusted OR: 2.2, 95% CI: 1.1–4.3, p = 0.02). When the Tmax pattern was abnormal, a higher proportion of patients with stroke mimic had Tmax patterns fully discordant with clinical symptoms than patients with stroke/transient ischemic attack (28/39 (71%) vs. 10/115 (9%), p < 0.001). Fully discordant Tmax abnormalities were strongly associated with stroke mimic (adjusted OR: 48.6, 95% CI: 7.0–336, p < 0.001), with a negative predictive value for identifying mimic of 91% (95% CI: 85–94%). Conclusion While one-quarter of patients with stroke mimic show Tmax abnormalities on automated RAPID computed tomography perfusion imaging, the majority of patterns were discordant with symptoms and vessel status. Normal or fully discordant Tmax abnormalities are were more common with stroke mimic and may inform stroke treatment decision making.

scholarly journals Intraluminal Thrombi in the Cervico-Cephalic Arteries

Stroke ◽  
2019 ◽  
Vol 50 (2) ◽  
pp. 357-364 ◽  
Author(s):  
Ravinder-Jeet Singh ◽  
Debabrata Chakraborty ◽  
Sadanand Dey ◽  
Aravind Ganesh ◽  
Abdulaziz Sulaiman Al Sultan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Ischemic Stroke ◽  
Functional Outcome ◽  
Scale Score ◽  
Transient Ischemic Attack ◽  
Computed Tomography Angiography ◽  
Functional Independence ◽  
Stroke Recurrence ◽  
Modified Rankin Scale ◽  
Ischemic Attack

Background and Purpose— Intraluminal thrombus (ILT) is an uncommon finding among patients with ischemic stroke. We report clinical-imaging manifestations, treatment offered, and outcome among patients with ischemic stroke/transient ischemic attack and ILT in their cervico-cephalic arteries. Methods— Sixty-one of 3750 consecutive patients with acute ischemic stroke/transient ischemic attack (within 24 hours of onset) and ILT on initial arch-to-vertex computed tomography angiography from April 2015 through September 2017 constituted the prospective study cohort. Functional outcome was assessed using the modified Rankin Scale score with functional independence at discharge defined as modified Rankin Scale score ≤2. Results— Prevalence of ILT on computed tomography angiography was 1.6% (95% CI, 1.2%–2.1%). Median age was 67 years (interquartile range, 56–73), and 40 subjects (65%) were male. The initial clinical presentation included transient ischemic attack in 12 (20%) and stroke in 49 patients (80%); most strokes (76%) were mild (National Institutes of Health Stroke Scale ≤5). The most common ILT location was cervical carotid or vertebral artery (n=48 [79%]) followed by intracranial (n=11 [18%]) and tandem lesions (n=2 [3%]). The most common initial treatment strategy was combination antithrombotics (heparin with single antiplatelet agent) among 57 patients (93%). Follow-up computed tomography angiography (n=59), after a median 6 days (interquartile range 4–10 days), revealed thrombus resolution in 44 patients (75% [completely in 27%]). Twenty four of 30 patients (80%) with >50% residual carotid stenosis underwent carotid revascularization (endarterectomy in 15 and stenting in 9 patients) without peri-procedural complications a median of 9 days after symptom onset. In-hospital stroke recurrence occurred in 4 patients (6.6%). Functional independence was achieved in 46 patients (75%) at discharge. Conclusions— Patients presenting with acute stroke/transient ischemic attack with ILT on baseline imaging have a favorable clinical course in hospital with low stroke recurrence, high rate of thrombus resolution, and good functional outcome when treated with combination antithrombotic therapy.

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