Low-Concentration Contrast Medium for 128-Slice Dual-Source CT Coronary Angiography at a Very Low Radiation Dose Using Prospectively ECG-Triggered High-Pitch Spiral Acquisition

Combining IRT with high-pitch spiral acquisition mode and low-tube-voltage technique, a low-concentration contrast medium of 270 mg I/mL can still maintain the contrast enhancement in coronary arteries without impairing image quality and significantly lower the radiation dose.