Preoperative Assessment of Aortic Valve Stenosis and Coronary Artery Disease
Preoperative Assessment of Aortic Valve Stenosis and Coronary Artery Disease
We sought to determine whether the dual-source computed tomography assessment of aortic valve
 stenosis and coronary artery disease is equivalent to or even better than conventional
 invasive coronary angiography and transthoracic echocardiography.
Until now invasive coronary angiography has established itself for the assessment of
 symptomatic aortic valve stenosis. Literature shows a good correlation between MSCT, MRI, TTE
 and TEE for evaluating the severity of the aortic valve stenosis.

 The dual-source computed tomography (DSCT) is capable of assessing coronary arteries with a
 high sensitivity and specificity in term of relevant stenosis (>50%), due to its excellent
 spatial and temporal resolution. This study includes the assessment of patients with
 symptomatic valve stenosis. The severity of the aortic valve stenosis is being assessed by
 DSCT and TTE. Significant coronary artery stenosis and its localisation are assessed by DSCT
 and invasive coronary angiography. We examine the correlation between DSCT on one side and
 either TTE or invasive coronary angiography on the other.
Inclusion Criteria:

 -  Patients with aortic valve disease who were scheduled to undergo cardiac surgery

 Exclusion Criteria:

 -  Hemodynamic instability

 -  Renal insufficiency (serum creatinine level > 133umol/L)

 -  Known allergy to iodinated contrast agents

 -  Non-treated hyperthyreosis