Imanuel Dzialowski
Dresden University of Technology
Internal medicineRadiologySurgeryOdds ratioCardiologyProspective cohort studyPredictive value of testsCohort studyOcclusionIntracerebral hemorrhageCerebral angiographyThrombolysisHematomaAngiographyModified Rankin ScaleComputed tomography angiographyNuclear medicineSpot signAcute strokeStrokeComputed tomographyMedicine
83Publications
26H-index
2,587Citations
Publications 82
Newest
#1Ronda Lun (U of O: University of Ottawa)H-Index: 2
#2Vignan Yogendrakumar (U of O: University of Ottawa)H-Index: 7
Last. Dar Dowlatshahi (U of O: University of Ottawa)H-Index: 39
view all 17 authors...
Background and Purpose— Patients with intracerebral hemorrhage (ICH) are often subject to rapid deterioration due to hematoma expansion. Current prognostic scores are largely based on the assessmen...
5 CitationsSource
#1Vignan Yogendrakumar (U of O: University of Ottawa)H-Index: 7
#2Tim Ramsay (Ottawa Hospital Research Institute)H-Index: 53
Last. Dar Dowlatshahi (Ottawa Hospital Research Institute)H-Index: 39
view all 19 authors...
Background and Purpose— Definitions of significant hematoma expansion traditionally focus on changes in intraparenchymal volume. The presence of intraventricular hemorrhage (IVH) is a predictor of ...
10 CitationsSource
#1Vignan Yogendrakumar (U of O: University of Ottawa)H-Index: 7
#2Tim Ramsay (Ottawa Hospital Research Institute)H-Index: 53
Last. PredictH-Index: 1
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Background and Purpose The computed tomography angiography (CTA) spot sign is widely used to assess the risk of hematoma expansion following acute intracerebral hemorrhage (ICH). However, not all patients can receive intravenous contrast nor are all hospital systems equipped with this technology. We aimed to independently validate the Hematoma Expansion Prediction (HEP) Score, an 18-point non-contrast prediction scale, in an external cohort and compare its diagnostic capability to the CTA spot s...
7 CitationsSource
#2Timothy Ramsay (U of C: University of Calgary)H-Index: 1
Last. Dar DowlatshahiH-Index: 39
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Objective To describe the relationship between intraventricular hemorrhage (IVH) expansion and long-term outcome and to use this relationship to select and validate clinically relevant thresholds of IVH expansion in 2 separate intracerebral hemorrhage (ICH) populations. Methods We used fractional polynomial analysis to test linear and nonlinear models of 24-hour IVH volume change and clinical outcome with data from the Predicting Hematoma Growth and Outcome in Intracerebral Hemorrhage Using Cont...
18 CitationsSource
#2Tim RamsayH-Index: 53
Last. PredictH-Index: 1
view all 27 authors...
Introduction: Baseline intraventricular hemorrhage (IVH) is a predictor of poor outcome in acute intracerebral hemorrhage (ICH) patients. However, questions remain as to the exact burden that new I...
Source
#1Vignan Yogendrakumar (Ottawa Hospital Research Institute)H-Index: 7
#2Eric E. Smith (U of C: University of Calgary)H-Index: 102
Last. Dar DowlatshahiH-Index: 39
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Objectives: There are limited data as to what degree of early neurologic change best relates to outcome in acute intracerebral hemorrhage. We aimed to derive and validate a threshold for early postintracerebral hemorrhage change that best predicts 90-day outcomes. Design: Derivation: retrospective analysis of collated clinical stroke trial data (Virtual International Stroke Trials Archive). Validation: retrospective analysis of a prospective multicenter cohort study (Prediction of haematoma grow...
9 CitationsSource
#1Hauke Schneider (TUD: Dresden University of Technology)H-Index: 16
#2Thien J. Huynh (Sunnybrook Health Sciences Centre)H-Index: 12
Last. Imanuel Dzialowski (TUD: Dresden University of Technology)H-Index: 26
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Background and Purpose— The intracerebral hemorrhage (ICH) score is the most commonly used grading scale for stratifying functional outcome in patients with acute ICH. We sought to determine whether a combination of the ICH score and the computed tomographic angiography spot sign may improve outcome prediction in the cohort of a prospective multicenter hemorrhage trial. Methods— Prospectively collected data from 241 patients from the observational PREDICT study (Prediction of Hematoma Growth and...
6 CitationsSource
#1Dar DowlatshahiH-Index: 39
#2Anirudda DeshpandeH-Index: 2
Last. Andrew M. DemchukH-Index: 106
view all 17 authors...
Background and Purpose— The computed tomographic angiography spot sign as a predictor of hematoma expansion is limited by its modest sensitivity and positive predictive value. It is possible that hematoma expansion in spot-positive patients is missed because of decompression of intracerebral hemorrhage (ICH) into the ventricular space. We hypothesized that revising hematoma expansion definitions to include intraventricular hemorrhage (IVH) expansion will improve the predictive performance of the...
9 CitationsSource
#1Vignan Yogendrakumar (Ottawa Hospital Research Institute)H-Index: 7
#2Andrew M. Demchuk (U of C: University of Calgary)H-Index: 106
Last. Dar Dowlatshahi (Ottawa Hospital Research Institute)H-Index: 39
view all 17 authors...
IntroductionThe role of intracerebral haemorrhage location in haematoma expansion remains unclear. Our objective was to assess the effect of lobar versus non-lobar haemorrhage on haematoma expansion and clinical outcome.Patients and methodsWe analysed data from the prospective PREDICT study where patients with intracerebral haemorrhage presenting to hospital under 6 h of symptom onset received baseline computed tomography (CT), CT angiogram, 24 h follow-up CT, and 90-day mRS. Intracerebral haemo...
11 CitationsSource
Purpose In acute cerebral ischemia, the assessment of irreversible injury is crucial for treatment decisions and the patient’s prognosis. There is still uncertainty how imaging can safely differentiate reversible from irreversible ischemic brain tissue in the acute phase of stroke.
43 CitationsSource