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Intracerebral hemorrhage markers on non-contrast computed tomography as predictors of the dynamic spot sign on CT perfusion and associations with hematoma expansion and outcome

  • Diagnostic Neuroradiology
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A Correction to this article was published on 24 September 2022

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Abstract

Purpose

To assess the association between non-contrast computed tomography (NCCT) hematoma markers and the dynamic spot sign on computed tomography perfusion (CTP), and their associations with hematoma expansion, clinical outcome, and in-hospital mortality.

Methods

Patients who presented with intracerebral hemorrhage (ICH) to a stroke center over an 18-month period and underwent baseline NCCT and CTP, and a follow-up NCCT within 24 h after the baseline scan were included. The initial and follow-up hematoma volumes were calculated. Two raters independently assessed the baseline NCCT for hematoma markers and concurrently assessed the CTP for the dynamic spot sign. Univariate and multivariate logistic regression analyses were performed to assess the association between the hematoma markers and the dynamic spot sign, adjusting for known ICH expansion predictors.

Results

Eighty-five patients were included in our study and 55 patients were suitable for expansion analysis. Heterogeneous density was the only NCCT hematoma marker to be associated with the dynamic spot sign after multivariate analysis (odds ratio, 58.61; 95% confidence interval, 9.13–376.05; P < 0.001). The dynamic spot sign was present in 22 patients (26%) and significantly predicted hematoma expansion (odds ratio, 36.6; 95% confidence interval, 2.51–534.2; P = 0.008). All patients with a spot sign had a swirl sign. A co-located hypodensity and spot sign was significantly associated with in-hospital mortality (odds ratio, 6.17; 95% confidence interval, 1.09–34.78; P = 0.039).

Conclusion

Heterogeneous density and swirl sign are associated with the dynamic spot sign. The dynamic spot sign is a stronger predictor than NCCT hematoma markers of significant hematoma expansion. A co-located spot sign and hypodensity predicts in-hospital mortality.

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Authors and Affiliations

Authors

Contributions

Study conception and design, material preparation, data collection, and analysis were performed by Michael Truong and Christen Barras. The first draft of the manuscript was written by Michael Truong. All authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Michael Quangminh Truong.

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Funding

No funds, grants, or other support was received for the research and authorship of this manuscript.

Conflicts of interest

The authors have no relevant financial or non-financial interests to disclose.

Ethics approval

Approval was obtained from the Central Adelaide Local Health Network ethics committee. The procedures used in this study are in accordance with the ethical standards of the 1964 Declaration of Helsinki and its later amendments.

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Patient consent was not required due to the low risk, retrospective nature of the research.

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Truong, M.Q., Metcalfe, A.V., Ovenden, C.D. et al. Intracerebral hemorrhage markers on non-contrast computed tomography as predictors of the dynamic spot sign on CT perfusion and associations with hematoma expansion and outcome. Neuroradiology 64, 2135–2144 (2022). https://doi.org/10.1007/s00234-022-03032-6

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