Related Experiment Video
Updated: Aug 25, 2026

Double Direct Injection of Blood into the Cisterna Magna as a Model of Subarachnoid Hemorrhage
Published on: August 30, 2020
Clinics in diagnostic imaging (91). Subarachnoid haemorrhage
1Department of Diagnostic Imaging, KK Women's and Children's Hospital, 100 Bukit Timah Road, Singapore 229899. cshwa@yahoo.com
Abstract:
Computed tomography (CT) is the initial radiological investigation of patients with an acute neurological event. A 64-year-old woman presenting with generalised weakness and headache for two days was diagnosed on CT to have subarachnoid haemorrhage. Digital subtraction angiography confirmed the cause to be a ruptured posterior communicating artery aneurysm. The patient was treated by neuroradiological intervention using occlusive coils. The CT features of subarachnoid haemorrhage are discussed. Accurate CT interpretation is essential to direct appropriate investigations and management in patients with stroke, particularly as acute cerebral infarction may occasionally mimic subarachnoid haemorrhage. The role of magnetic resonance (MR) imaging in evaluation of cerebral infarct is also discussed.
Related Concept Videos
Hemorrhagic Stroke l: Introduction
Hemorrhagic Stroke ll: Pathophysiology
Aneurysm II: Clinical Manifestations and Diagnostic Studies
Increased Intracranial Pressure l: Introduction
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

