Real-time three-dimensional transesophageal echocardiography automated measuring of aortic annulus before transcatheter aortic valve replacement / 中国医学影像技术

ABSTRACT

Objective: To explore the feasibility and accuracy of 3D transesophageal echocardiography (3D-TEE) automated measuring of aortic annulus before transcatheter aortic valve replacement (TAVR). Methods: The area, perimeter, maximal diameter and minimum diameter of aortic annulus were measured with 3D-TEE and multi-detector CT (MDCT) in 21 patients who underwent TAVR. The difference and correlation between the above parameters measured with 3D-TEE and MDCT were analyzed. The time for measuring aortic annulus with 3D-TEE was recorded. Results: The area, perimeter, maximal diameter and minimum diameter of aortic annulus measured with 3D-TEE were (445.74±62.60)mm2, (76.16±5.30)mm, (26.29±1.97)mm and (21.40±1.68)mm, respectively, with MDCT were (456.85±75.70)mm2, (77.17±5.90)mm, (26.76±2.83)mm, (20.98±1.76)mm, respectively (all P>0.05), all had high correlations (r=0.89, 0.91, 0.85, 0.79, all P<0.01). The analyzed time was (1.54±0.21)min with automated 3D-TEE. Conclusion: Automated measurement of aortic annular with 3D-TEE before TAVR is feasible, accuracy and rapid, which may replace MDCT for TAVR in clinical setting.