When would you consider CT aortic valve calcium score over TEE to further delineate the severity of LFLG aortic stenosis?   

If the concern is for classical low flow low gradient severe AS (LVEF < 50%, AVA < 1 cm2 by echocardiogram with peak velocity < 4 m/s or mean gradient < 40 mmHg coupled with low stroke volume index, < 35 ml/m2), would recommend dobutamine stress echocardiography to distinguish between...