Patient in his 70's with paroxysmal atrial fibrillation was referred to CT for assessment of chronic coronary artery disease before pulmonary vein ablation.

One-beat cardiac acquisition: 

• 160 mm axial scanning with ECG and Auto Gating 

• 100 kV and 542 mA 

• BMI: 34 (101 kg, 172 cm) 

• ASiR™-V¹ to lower dose 

• 0.28 sec rotation speed 

• Heart rate: 85 - 136 BPM 

• 70 cc of contrast media (400 mg I/ml, flow 4 cc/s) including SmartPrep phase triggering 

• DLP 92 mGy-cm 

• 1.2 mSv²

Results

This cardiac CT scan did not show any signs of disease in the pulmonary veins, the left atrium and the included parts of the lungs. The physician also reported a strong coronary atherosclerosis.

¹ _{In clinical practice, the use of ASiR-V may reduce CT patient dose depending on the clinical task, patient size, anatomical location and clinical practice. A consultation with a radiologist and a physicist should be made to determine the appropriate dose to obtain diagnostic image quality for the particular clinical task.}

² _{Obtained using a chest factor of 0.014*DLP.}