Key Post-Processing Functions on Medical Angiography X-ray System
DSA (Digital Subtraction Angiography) image post-processing software includes a variety of tools designed to enhance and analyze raw angiographic images, delivering clearer, more precise, and quantifiable diagnostic information for clinicians. These software solutions can be broadly classified into two categories: proprietary software developed by major medical device manufacturers, and third-party specialized image processing software.
Regardless of the vendor, most DSA (Digital Subtraction Angiography) software offers a set of core functionalities designed to enhance image interpretation and support interventional procedures:
1. 3D Reconstruction – Generates 3D vascular models from multi-angle 2D projections, also known as 3D Rotational Angiography.
2. Roadmapping – Overlays 3D vascular models onto real-time fluoroscopy to guide the navigation of interventional devices.
3. Image Fusion – Integrates DSA images with prior CT or MRI scans to provide richer anatomical context.
4. Quantitative Vascular Analysis (QVA) – Automatically or semi-automatically measures vessel diameter, stenosis percentage, and lesion length.
5. Virtual Stenting – Simulates stent deployment within 3D models, assisting in device selection before actual implantation.
6. CT-like Imaging (e.g., DynaCT/XperCT) – Provides cross-sectional views comparable to conventional CT scans.
7. Hemodynamic Analysis – Evaluates blood flow, perfusion timing, and efficiency (e.g., iFlow).
These functionalities collectively enhance diagnostic precision, procedural planning, and clinical decision-making in interventional cardiology and radiology.
