Author: Ralf W. Bauer, MD, J. Matthias Kerl, MD and Thomas J. Vogl, MD Clinic of the Goethe University, Department of Diagnostic and Interventional Radiology, Frankfurt/Germany
A 68-year-old patient with atypical chest pain and known year-long arterial hypertension presented at our department in order to rule out coronary artery disease. Ultrasound showed concentric LV hypertrophy and aortic valve stenosis grade 1. Resting heart rate was 50 bpm and no beta-blockers were injected.
Coronary CT angiography using the prospectively ECG-gated Flash Spiral was performed utilizing only 0.69 mSv radiation dose. We found mild concentric LV hypertrophy and minor calcifications of the aortic valve. There was no sign of macroangiopathic arteriosclerotic changes in the main coronary arteries and their major branches. Coronary artery disease could be ruled out in this patient.
Coronary CT angiography using 100 kV tube potential and the Flash Spiral acquisition mode allowed ruling out coronary artery disease in this normal-sized adult patient (185 cm/ 86 kg) with a DLP of 49 in only 0.29 seconds scan time without the use of beta blockers. The smallest myocardial branches of the RCA, LAD and LCX could be visualized underlining best image quality at lowest dose values.
SOMATOM Definition Flash
100 kV / 100 kV
CARE Dose 4D
128 x 0.6 mm
70 ml contrast
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The drugs and doses mentioned herein are consistent with the approval labeling for uses and/or indications of the drug. The treating physician bears the sole responsibility for the diagnosis and treatment of patients, including drugs and doses prescribed in connection with such use. The Operating Instructions must always be strictly followed when operating the CT System. The source for the technical data is the corresponding data sheets. Results may vary.