Qlab philips software#

However, intertechnique variability is relevant. RT3DE allows reproducible noninvasive assessment of LV volumes and function. QLab and TomTec underestimated CMR values, with the highest agreement between CMR and QLab. Intervendor agreement between QLab and TomTec 30 showed larger bias and wider limits of agreement (bias: QLab vs TomTec 30: end-systolic volume = 0.8% В± 23.6% EDV = -2.2% В± 17.0%) with notable individual differences in small children. Intra- and interobserver variability for both workstations was good (relative bias В± SD for end-diastolic volume in %: intraobserver: QLab = -0.8 В± 2.4 TomTec 30 = -0.7 В± 7.2 TomTec 75 = -1.9 В± 6.7 interobserver: QLab = 2.4 В± 7.5 TomTec 30 = 1.2 В± 5.1 TomTec 75 = 1.3 В± 4.5). LV volumes had a significant association with age, body size, and gender therefore, sex-specific percentiles were indexed to body surface area. In 22 subjects, cardiovascular magnetic resonance imaging (CMR) was used as the reference.ДЄ total of 370/497 (74.4%) of the subjects provided adequate data sets. Reference percentiles were computed using Cole's LMS method. Volume analysis was performed using QLab 9.0 (Philips) and TomTec 4DLV2.7 (vendor-independent testing high (TomTec 75) and low (TomTec 30) contour-finding activity). In a multicenter prospective-design study, 497 healthy children (ages 1 day to 219 months) underwent RT3DE imaging of the LV (ie33, Philips, Andover, MA).

Qlab philips software#

The aim of the study was to establish pediatric percentiles in a large population and to compare the inherent influence of different evaluation software on the resulting measurements. Real-time three-dimensional echocardiography (RT3DE) is a promising method for accurate assessment of left ventricular (LV) volumes and function, however, pediatric reference values are scarce.