BioMed Research International / 2015 / Article / Tab 2

Research Article

Semiautomatic, Quantitative Measurement of Aortic Valve Area Using CTA: Validation and Comparison with Transthoracic Echocardiography

Table 2

Observer variability.

Relative difference (%)

Intraobserver variability, manual8.4 ± 7.1
Intraobserver variability, semiautomatic 5.8 ± 4.5
Interobserver variability, manual27.6 ± 16.0
Interobserver variability, semiautomatic16.8 ± 12.7