ACCURACY OF REAL-TIME SINGLE- AND MULTI-BEAT 3-D SPECKLE TRACKING ECHOCARDIOGRAPHY IN VITRO

作者：Hjertaas Johannes Just; Fossa Henrik; Dybdahl Grete Lunestad; Gruner Renate; Lunde Per; Matre Knut^*

来源：Ultrasound in Medicine and Biology, 2013, 39(6): 1006-1014.

DOI：10.1016/j.ultrasmedbio.2013.01.010

• In vitro
• Phantom
• Left ventricle
• Echocardiography
• Three-dimensional ultrasound
• Strain
• Sonomicrometer
• Volume rate
• Frame rate
• Polyvinyl alcohol

With little data published on the accuracy of cardiac 3-D strain measurements, we investigated the agreement between 3-D echocardiography and sonomicrometry in an in vitro model with a polyvinyl alcohol phantom. A cardiac scanner with a 3-D probe was used to acquire recordings at 15 different stroke volumes at a heart rate of 60 beats/min, and eight different stroke volumes at a heart rate of 120 beats/min. Sonomicrometry was used as a reference, monitoring longitudinal, circumferential and radial lengths. Both single-and multi-beat acquisitions were recorded. Strain values were compared with sonomicrometer strain using linear correlation coefficients and Bland-Altman analysis. Multi-beat acquisition showed good agreement, whereas real-time images showed less agreement. The best correlation was obtained for a heart rate 60 of beats/min at a volume rate 36.6 volumes/s. (E-mail: [e-mail].

• 出版日期2013-6
• 单位河北医科大学