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Virtual angioscopy using 3-dimensional rotational digital subtraction angiography for endovascular assessment
Naoki Unno1, Hiroshi Mitsuoka, Yasutaka Takei
1Second Department of Surgery, Hamamatsu University School of Medicine, Handayama, Hamamatsu, Japan. unno@hama-med.ac.jp
Summary
Three-dimensional rotational digital subtraction angiography (3D DSA) creates virtual angioscopic images, aiding in the assessment of vascular diseases after endovascular treatment.
Area of Science:
- Vascular Imaging
- Interventional Radiology
Background:
- Endovascular therapy is a common treatment for various vascular conditions.
- Accurate post-treatment imaging is crucial for evaluating outcomes.
- Existing imaging modalities may have limitations in visualizing complex vascular anatomy.
Purpose of the Study:
- To assess the feasibility of 3D DSA for creating virtual angioscopic images.
- To evaluate the utility of these images before and after endovascular interventions.
Main Methods:
- Utilized 3D DSA data from 36 patients undergoing endovascular treatment.
- Employed surface-rendering techniques to generate intraluminal views.
- Created virtual angioscopy, MIPs, SSDs, and MPRs from rotational angiography data.
Main Results:
- Realistic intraluminal views were generated within 2 minutes post-angiography.
- The technique provided adequate visualization for vessel measurement and morphology assessment.
- Effective evaluation of endoleaks after stent-graft deployment was achieved.
Conclusions:
- 3D DSA and virtual angioscopy are feasible and effective novel imaging techniques.
- These methods allow immediate post-angiography visualization of blood vessels.
- They can serve as valuable adjuncts to CT or MRI for evaluating vascular diseases post-intervention.