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Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

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DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
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Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
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Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
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Related Experiment Video

Updated: Oct 13, 2025

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Imaging as a Selection Tool for Thrombectomy in Acute Ischemic Stroke: Pathophysiologic Considerations.

Jesse M Thon1, Tudor G Jovin2

  • 1From Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ.

Neurology
|November 17, 2021
PubMed
Summary

Direct to angiography (DTA) reduces delays in mechanical thrombectomy for large vessel occlusion (LVO) stroke. This approach improves treatment times and patient outcomes by streamlining emergency department evaluations.

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Area of Science:

  • Neurology
  • Interventional Neuroradiology
  • Emergency Medicine

Background:

  • Large vessel occlusion (LVO) stroke carries significant morbidity and mortality.
  • Mechanical thrombectomy is a time-sensitive intervention for LVO stroke, with outcomes directly correlated to treatment initiation speed.
  • Existing workflows often introduce delays due to prolonged emergency department evaluations and remote neuroimaging.

Purpose of the Study:

  • To introduce the direct to angiography (DTA) model as an emerging paradigm for acute LVO stroke care.
  • To review the feasibility and outcomes of DTA in reducing treatment times.
  • To identify barriers to DTA adoption and propose solutions.

Main Methods:

  • Review of existing literature and studies evaluating the DTA model for LVO stroke.
  • Analysis of systems-based factors contributing to delays in mechanical thrombectomy.
  • Discussion of implementation strategies and potential challenges for DTA.

Main Results:

  • The DTA model has demonstrated substantial reductions in treatment initiation times for LVO stroke.
  • Studies indicate improved clinical outcomes associated with earlier reperfusion achieved through DTA.
  • Key barriers include logistical challenges, interdepartmental coordination, and established protocols.

Conclusions:

  • Direct to angiography represents a promising strategy to optimize workflow efficiency in acute LVO stroke management.
  • Overcoming implementation barriers is crucial for widespread adoption of DTA to improve patient outcomes.
  • Further research and standardized protocols are needed to support the integration of DTA into stroke care pathways.