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Table 3 Comparison of methods of planimetry and calculation of aortic valve area

From: Cardiovascular magnetic resonance assessment of the aortic valve stenosis: an in vivo and ex vivo study

  Aortic valve area (cm2)
Method Mean Range
CMR ex vivo 0.65 ± 0.09 0.50 – 0.76
CMR in vivo 0.75 ± 0.09 0.62 – 0.86
TEE 0.80 ± 0.16 0.65 – 1.10
TTE 0.69 ± 0.07 0.50 – 0.70
CATH 0.59 ± 0.27 0.29 – 1.08
  1. CMR, cardiovascular magnetic resonance; CATH, cardiac catheterization; TEE, transesophageal echocardiography; TTE, transthoracic echocardiography