[Multidetector computed tomography coronarography: from studies to everyday life]

Area of Science:

• Cardiology
• Radiology
• Medical Imaging

Background:

• Multidetector computed tomography coronarography (MDCT) offers non-invasive coronary artery evaluation.
• Existing studies often use highly selected patient groups and single centers.
• The diagnostic accuracy in unselected populations requires further investigation.

Purpose of the Study:

• To assess the diagnostic accuracy of MDCT for coronary stenoses in an unselected patient cohort across multiple centers.
• To compare MDCT findings with conventional coronarography.

Main Methods:

• A retrospective, non-randomized study included 52 patients with suspected coronary stenoses.
• MDCT (16, 40, and 64 slices) was performed across ten diverse centers.
• Diagnostic accuracy was evaluated against conventional coronarography for significant stenoses (>50%).

Main Results:

• Patient-based analysis: sensitivity 91.4%, specificity 17.7%, accuracy 67.3%.
• Segment-based analysis: sensitivity 55.3%, specificity 85.6%, accuracy 82.5%.
• High false-positive rates were observed, particularly in patient-based analysis.

Conclusions:

• Routine MDCT implementation is limited by a high false-positive rate in unselected patients with high pretest probability.
• The clinical utility of MDCT needs further evaluation in large, multicenter studies.
• Precise recommendations for routine clinical application are pending further research.