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Updated: May 24, 2026
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Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
Published on: June 18, 2021
Recent advances in diagnostic approaches for sub-arachnoid hemorrhage
Ashish Kumar1, Yoko Kato, Motoharu Hayakawa
1Bombay Hospital Institute of Medical Sciences, Mumbai, India.
Asian Journal of Neurosurgery
|February 21, 2012
Summary
Sub-arachnoid hemorrhage (SAH) is a severe neurological condition. Recent advances in imaging, particularly 3D-CTA and 4D-CTA, offer improved diagnostic capabilities for SAH, potentially reducing patient morbidity and mortality.
Area of Science:
- Neurosurgery
- Neuroradiology
- Vascular Neurology
Background:
- Sub-arachnoid hemorrhage (SAH) is a critical neurosurgical condition with high mortality and morbidity rates (32-67%).
- Diagnostic imaging plays a crucial role in managing SAH, with techniques like computed tomography angiography (CTA), magnetic resonance angiography (MRA), and digital subtraction angiography (DSA) being mainstays.
- Non-invasive methods like CTA and MRA have become rapid, accessible, and cost-effective for diagnosing SAH causes.
Purpose of the Study:
- To review recent advancements in diagnostic approaches for sub-arachnoid hemorrhage (SAH).
- To emphasize the emerging roles of three-dimensional computed tomography angiography (3D-CTA) and four-dimensional CTA (4D-CTA) in SAH diagnosis and management.
- To compare the diagnostic potential of advanced CTA techniques against conventional DSA.
Main Methods:
- Review of current literature on diagnostic imaging modalities for SAH.
- Focus on the evolution and application of 3D-CTA and 4D-CTA.
- Comparative analysis of CTA techniques versus digital subtraction angiography (DSA).
Main Results:
- 3D-CTA is acknowledged for its utility in aneurysm management, offering multi-directional views of aneurysmal morphology and vascular relationships.
- 4D-CTA represents a recent advancement, adding a temporal dimension to CT angiography.
- While DSA remains a preferred method at many centers, CTA offers significant advantages in speed, accessibility, and detailed anatomical visualization.
Conclusions:
- Advanced CTA techniques, including 3D-CTA and 4D-CTA, are increasingly important in the diagnostic armamentarium for SAH.
- These technologies provide valuable insights into aneurysm morphology and spatial relationships, complementing or potentially challenging the role of DSA.
- Continued research and adoption of 4D-CTA promise further improvements in the diagnosis and management of SAH.
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