We analyzed radiation dose for 64-slice CT and dual source CT (DSCT) coronary angiography and the effect of algorithms for dose reduction in 2822 patients. The average dose length product (DLP) for DSCT in clinical routine was shown to be 25% lower than for 64-slice CT. When using a comparable scan protocol of 120 kV for 64-slice CT and DSCT, respectively, DSCT coronary angiography had a 25% higher DLP. The use of ECG-dependent tube current modulation, 100 kV tube voltage and a sequential scan protocol resulted in a radiation dose reduction up to 80% for DSCT coronary angiography.
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We analyzed radiation dose for 64-slice CT and dual source CT (DSCT) coronary angiography and the effect of algorithms for dose reduction in 2822 patients. The average dose length product (DLP) for DSCT in clinical routine was shown to be 25% lower than for 64-slice CT. When using a comparable scan protocol of 120 kV for 64-slice CT and DSCT, respectively, DSCT coronary angiography had a 25% higher DLP. The use of ECG-dependent tube current modulation, 100 kV tube voltage and a sequential scan p...
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