Reliability of assessing change with sequential coronary angiography

Area of Science:

• Cardiovascular imaging
• Interventional cardiology
• Medical diagnostics

Background:

• Assessing coronary lesion progression is crucial for cardiovascular disease management.
• Sequential coronary angiography is a primary method for evaluating changes in coronary artery disease.
• Reliability of interpreting sequential angiograms can impact clinical decision-making.

Purpose of the Study:

• To evaluate the reliability of sequential angiography in estimating changes in coronary lesions.
• To determine the optimal conditions for accurate assessment of coronary atherosclerosis progression.
• To compare the accuracy of multi-panel versus single-panel angiogram readings.

Main Methods:

• Three panels of expert angiographers independently reviewed 18 sets of paired coronary angiograms.
• Angiograms were taken 24 months apart, with readers blinded to temporal sequence and clinical data.
• Inter-reader agreement among panels was assessed under stringent conditions for determining lesion change.

Main Results:

• Under stringent conditions (agreement of at least two out of three panels), sequential angiography demonstrated good reliability in assessing coronary atherosclerosis changes.
• Single-panel readings resulted in an unacceptable overestimate of patients with lesion changes.
• Simultaneous viewing, training, and accounting for boundary definition differences were necessary for accurate analysis.

Conclusions:

• Sequential coronary angiography can reliably detect changes in coronary atherosclerosis when interpreted by multiple expert panels under strict criteria.
• Reliance on single-panel readings can lead to significant overestimation of disease progression.
• Standardized protocols and multi-reader consensus are essential for accurate interpretation of coronary lesion changes.