Core Clinical Value and Advantages of 3D Reconstruction
Comprehensive, Unobstructed Viewing
Overcomes the limitations of traditional 2D DSA, where vessel overlap and single-angle views may lead to missed or inaccurate diagnoses. Physicians can freely rotate and zoom the model to examine pathologies from the optimal perspective-crucial for assessing complex aneurysm neck morphology or the extent of vascular stenosis.
Improved Measurement Accuracy
Enables precise geometric measurements, including aneurysm neck width, dome size, and the true diameter and length of stenotic segments. Such data are vital for selecting treatment strategies (e.g., assessing suitability for coiling) and determining device specifications (e.g., stent size).
Optimized Interventional Therapy Planning
In fields such as neurointervention and cardiac intervention, the 3D model serves as a "live map." Surgeons can simulate device navigation preoperatively, anticipate the difficulty of advancing microcatheters, and foresee potential challenges-significantly enhancing procedural safety and success rates.
Reduced Contrast Agent Usage and Radiation Dose
A single rotational DSA scan acquires all data required for reconstruction, eliminating the need for multiple "test injections" and repeated exposures to identify the best projection angle. This reduces radiation exposure for both patients and staff while lowering the amount of contrast agent used.
Enhanced Doctor–Patient Communication
Intuitive 3D images allow physicians to more clearly explain conditions, treatment plans, and potential risks to patients and their families, thereby improving communication effectiveness.
Primary Application Areas
Neurointerventional Radiology: The most widely applied area. Used for diagnosing and planning treatment of cerebral aneurysms, arteriovenous malformations (AVMs), arteriovenous fistulas (AVFs), and vascular stenosis.
Cardiac Intervention: Applied in assessing coronary artery disease and diagnosing complex congenital heart conditions.
Peripheral Vascular Intervention: Used to evaluate stenosis or aneurysms in the renal, iliac, and lower limb arteries.
Oncologic Intervention: Applied to visualize tumor blood supply, guiding chemoembolization procedures.
Summary
The 3D Reconstruction function in DSA systems advances angiography from the era of "2D photographs" to "3D interactive models." It is not merely a technical upgrade in imaging but also a crucial tool in modern precision medicine. It greatly enhances the accuracy of diagnosing vascular diseases and improves the safety and planning of interventional treatments, making it an indispensable core feature of high-end DSA systems.
