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Related Concept Videos

Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
Stroke: Introduction and Types01:29

Stroke: Introduction and Types

A stroke is an acute neurological event caused by the sudden disruption of cerebral blood flow, leading to rapid loss of neuronal function. Neurons depend on continuous oxygen and glucose supply, so even brief interruptions can cause irreversible injury within minutes. Strokes are classified into ischemic and hemorrhagic types.Ischemic StrokeIschemic strokes are most common and occur due to arterial occlusion, depriving brain tissue of oxygen and nutrients. This leads to energy failure, ionic...
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...

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Related Experiment Video

Updated: Jun 6, 2026

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
09:14

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model

Published on: June 18, 2021

Hemorrhagic stroke.

Scott D Smith1, Clifford J Eskey

  • 1Department of Radiology, Dartmouth-Hitchcock Medical Center, One Medical Center Drive, Lebanon, NH 03756, USA.

Radiologic Clinics of North America
|November 30, 2010
PubMed
Summary
This summary is machine-generated.

Hemorrhagic stroke, including intracerebral and subarachnoid hemorrhage, is diagnosed using advanced imaging in emergency evaluations. This review covers current imaging techniques, findings, and causes for acute hemorrhage detection.

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Using Zebrafish Larvae to Study the Pathological Consequences of Hemorrhagic Stroke
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Using Zebrafish Larvae to Study the Pathological Consequences of Hemorrhagic Stroke

Published on: June 5, 2019

Related Experiment Videos

Last Updated: Jun 6, 2026

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
09:14

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model

Published on: June 18, 2021

Using Zebrafish Larvae to Study the Pathological Consequences of Hemorrhagic Stroke
06:36

Using Zebrafish Larvae to Study the Pathological Consequences of Hemorrhagic Stroke

Published on: June 5, 2019

Area of Science:

  • Neurology
  • Radiology
  • Emergency Medicine

Background:

  • Sudden focal neurologic symptoms or altered consciousness often indicate hemorrhagic stroke.
  • Prompt diagnosis of intracerebral hemorrhage (ICH) and subarachnoid hemorrhage (SAH) is critical.

Purpose of the Study:

  • To review current advanced imaging options for detecting acute hemorrhagic stroke.
  • To discuss expected imaging findings, common/unusual causes, and their distinguishing features.
  • To address imaging strategies and future management implications.

Main Methods:

  • Review of current literature on advanced imaging modalities for acute hemorrhage.
  • Analysis of imaging findings associated with various causes of hemorrhagic stroke.

Main Results:

  • Advanced imaging, such as CT and MRI, are key for diagnosing ICH and SAH.
  • Specific imaging features help differentiate common and rare causes of hemorrhagic stroke.

Conclusions:

  • Current imaging modalities effectively detect acute hemorrhagic stroke.
  • Understanding imaging features aids in identifying causes and guiding patient management.
  • Future imaging research may further refine diagnostic and therapeutic strategies.