Background: Studies on risk factors for primary intracerebral haemorrhage (ICH) focus on short-term predictive values of distinct clinical parameters or computed tomography (CT) markers and disregard the others. We, therefore, studied independent predictive values of demographic, clinical, and CT markers regarding ICH expansion, late ICH recurrence, and late mortality.

Methods: In a retrospective study of 288 patients with primary ICH, ICH localization (158 lobar, 81 deep, and 49 cerebellar), volume, blend sign, spot sign, finger-like projections, and subarachnoid haemorrhages were evaluated. ICH localization-specific differences for demographic (age, sex), clinical parameters (vascular risk factors, antiplatelet, and anticoagulation therapy), and CT markers were evaluated using logistic regression. We applied Cox proportional hazards modelling using these parameters to predict risk factors for ICH expansion, late ICH recurrence, and late mortality.

Results: The blend sign in lobar ICH relates to increased risk of ICH expansion (HR2.3), late ICH recurrence (HR2.3), and mortality (HR1.6). Age, conditions requiring antiplatelet medication, deep ICH localization, volume, and blend sign represented the most important independent factors impacting overall mortality.

Conclusions: Blend sign at baseline ICH is a manifestation of underlying detrimental vascular processes that signal increased ICH expansion risk, although is also indicative of long-term risks for late recurrent ICH and late mortality.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10573360PMC
http://dx.doi.org/10.3390/jcm12196131DOI Listing

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Article Synopsis
  • The study investigates the relationship between two features in Intracerebral Hemorrhage (ICH), the spot sign and the blend sign, aiming to clarify the mechanisms behind their formation.
  • Researchers categorized patients based on the location of the spot sign within the blend sign and analyzed its association with hematoma expansion (HE) over a period from 2018 to 2023.
  • Results showed that the majority of patients with a spot sign had it in the hyperdensity region, and this was a strong predictor of HE, suggesting that the hyperdensity area indicates active bleeding.
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Intracerebral Hemorrhage.

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December 2024

Stroke Center and Department of Neurology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.

Background: Compared to ischemic stroke, intracerebral hemorrhage (ICH) has higher mortality and more severe disability. Asian such as Chinese and Japanese and Mexican Americans, Latin Americans, African Americans, Native Americans has higher incidences than do white Americans. So, ICH is an important cerebrovascular disease in Asia.

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To alleviate the impact of atmospheric turbulence on receiver carrier recovery in free-space optical communication, this study introduces a novel frame synchronization and carrier recovery method. This method employs a blend of pseudorandom sequences and specific cyclic quadrature phase shift keying (QPSK) training sequences, facilitating frame synchronization and frequency offset (FO) estimation. The research designs a time-series metric curve to counteract the effect of side peaks, enhancing the accuracy of frequency offset estimation via QPSK spectrum features.

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Development and validation of the nomogram model derived non-contrast CT score to predict hematoma expansion in patients with spontaneous intracerebral hemorrhage.

Clin Radiol

January 2025

Department of Radiology and Nuclear Medicine, Xuanwu Hospital, Capital Medical University, No.45 Changchun Street, Xicheng District, Beijing, China; Beijing Key Laboratory of Magnetic Resonance Imaging and Brain Informatics, Xuanwu Hospital, Capital Medical University, No. 45 Changchun Street, Xicheng District, Beijing, China. Electronic address:

Aims: Develop and validate new non-contrast computed tomography (NCCT) score to predict hematoma expansion (HE) in spontaneous intracerebral hemorrhage (SICH) patients based on hematoma's shape irregularity and density heterogeneity.

Materials And Methods: Retrospective study was conducted among 136 patients for development and 90 patients for validation at two separate hospitals. SICH patients with NCCT scanned within 6 hours of symptoms and follow-up NCCT scanned within 24 hours were enrolled.

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Background And Purpose: The underlying basis of the blend sign on brain computed tomography (CT) in patients with intracerebral hemorrhage (ICH) is unclear. Few studies have examined the morphological alterations in the CT blend sign in ICH. Therefore, we assessed changes in the CT blend sign and their association with hematoma expansion (HE) and adverse outcomes in ICH patients.

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