Diagnostic accuracy of cardiac computed tomography angiography for myocardial infarction

Figure 1 Flow chart of computed tomography studies performed on each patient. MI: Myocardial infarct; CTA: Computed tomography angiography.

Figure 2 Example of different late phase image reconstructions in 4 chamber long axis view including iodine-only images in a patient who underwent dual energy computed tomography 10 min after contrast administration for evaluation of late hyperenhanced regions (arrows).

Figure 3 Comparison of sensitivity measurements obtained for low, high, and mixed tube energy voltages. A: There were significant differences noted between the following pairs using grade 3 only: 100 kVp vs 140 kVp (P < 0.05); 100 kVp vs iodine only (P < 0.05); 140 kVp vs mixed (P < 0.05), and between the following pairs using combined grade 2 and grade 3: 100 kVp vs 140 kVp (P < 0.0005); 100 kVp vs mixed (P < 0.0001); 100 kVp vs iodine only (P < 0.005); B: No significant differences were noted except between the following pairs using combined grades 2 and 3: 100 kVp vs 140 kVp (^bP < 0.01); 100 kVp vs mixed (^dP < 0.01).

Figure 4 Comparison of diagnostic accuracy measurements obtained for low, high, and mixed tube energy voltages. No significant differences were noted except between the following pairs using grade 3 only: 100 kVp vs 140 kVp (^bP < 0.01), and between the following pairs using combined grades 2 and 3 : 100 kVp vs 140 kVp (^dP < 0.0001); 100 kVp vs mixed (^dP < 0.0001).