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Related Experiment Video

Updated: Oct 18, 2025

Author Spotlight: Revolutionizing Remote Surgery with Augmented Reality and Robotics for Enhanced Precision and Accessibility
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An adaptive optimal viewing angle determination algorithm for TEVAR operation.

Weiya Sun1, Guanyu Yang1,2, Yang Chen1,2

  • 1Laboratory of Image Science and Technology, Key Laboratory of Computer Network and Information Integration, School of Computer Science and Engineering, Southeast University, Nanjing, 210096, China.

BMC Medical Imaging
|October 3, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces an automated method to determine the optimal X-ray angiography viewing angle for thoracic endovascular aortic repair (TEVAR). The technique ensures accurate stent placement, potentially reducing complications and improving procedural efficiency.

Keywords:
Aortic dissectionComputed tomography angiographyLow-doseOptimum viewing angleX-ray

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Area of Science:

  • Medical Imaging
  • Interventional Cardiology
  • Surgical Navigation

Background:

  • Accurate X-ray angiography viewing angle is critical for thoracic endovascular aortic repair (TEVAR).
  • Manual determination of projection angles by physicians can lead to suboptimal stent placement, vascular occlusion, or endoleak.

Purpose of the Study:

  • To develop an automated algorithm for determining the optimal X-ray angiography viewing angle.
  • To improve stent placement accuracy and reduce procedural complications in TEVAR.

Main Methods:

  • An adaptive optimization algorithm utilizes pre-operative computed tomography angiography (CTA) data.
  • The algorithm automatically calculates the optimal C-arm angle to avoid vessel overlap and minimize foreshortening.

Main Results:

  • The proposed method's optimal viewing angle showed no significant difference compared to expert physician-determined angles (p=0.0678).
  • Validation performed on thirty-five patients.

Conclusions:

  • The automated method provides an effective means to calculate optimal C-arm angles for TEVAR.
  • Potential benefits include reduced procedure time, decreased radiation exposure, and less contrast agent usage.