[Clinical value of digital subtraction angiography in cardiology--current status and future prospects]

Area of Science:

• Radiology
• Cardiology
• Medical Imaging

Background:

• Digital technology enables X-ray image processing, with aims of image enhancement and functional imaging.
• Digital subtraction angiography (DSA) is used for non-moving vessel visualization but faces challenges in cardiology due to motion artifacts.

Purpose of the Study:

• To assess the clinical relevance of DSA in cardiology.
• To determine visualized structures, parameter errors, clinical significance, and procedural advantages of DSA.

Main Methods:

• Utilizing DSA with intravenous contrast medium for left ventricle visualization at rest and during exercise.
• Combining DSA with pulmonary arterial pressure measurements.
• Evaluating image quality for aorto-coronary bypass grafts and proximal coronary arteries.

Main Results:

• Left ventricle visualization is achievable, with specific error margins for ventricular volumes, ejection fraction, diameters, wall volume, and thickness.
• DSA provides sufficient image quality to determine the patency of aorto-coronary bypass grafts.
• Visualization of proximal coronary arteries via intravenous contrast is rarely reported.

Conclusions:

• DSA is a valuable tool in cardiology for left ventricular assessment and bypass graft evaluation.
• Despite inherent errors in parameter determination, DSA offers procedural benefits and aids in clinical decision-making.
• Further research may explore enhanced visualization techniques for coronary arteries.