Evaluation Of Right Ventricular Global And Regional Volume And Systolic Function In Normal Adults By Real-time Three-dimensional Echocardiography

Objective: Using real-time three-dimensional echocardiography (RT-3DE)technology and Tomtec4D-RV-function analysis software to evaluate normal adult’sright ventricular(RV) global and regional volume, systolic function, the ratio ofregional parts EDV,ESV,SV to RV global EDV,ESV,SV and to explore the RVregional and global volume and systolic function with age and gender if there is acorrelation.Methods: Have case study on61healthy adult volunteers, including29males and32females, who are grouped by age:30years old> I group≧19years old(in total17cases);40years old>Ⅱ group≧30years old(in total8cases);50years old>Ⅲgroup≧40years old(in total13cases);60years>Ⅳ group≧50years old(intotal11cases);75years old>Ⅴ group≧60years old (in total12cases). Apply GEVivid7Dimension Color Doppler ultrasound imaging device, with S5probe andX3-1RT-3D probe, to inspect conventional two-dimensional echocardiography andRT-3DE. With apical four-chamber view of the right ventricle to obtain satisfactorysection, using RT-3DE to obtain full volume imaging of RV, importing it to Tomtecworkstation, starting4D-RV-function analysis software, acquire regional RV threeglobal EDV, ESV, SV, EF, compare male and female cases in and between groups, andcalculate the ratio of regional parts EDV,ESV,SV in RV global EDV,ESV,SV.Compare RV global and three regional parts volume, calculate EF and the ratio ofthree regional parts EDV,ESV,SV, and perceive if any ratio change happened withdifferent age groups.Results:61patients were successful analyzed by Tomtec software. The RV global,body EDV, ESV of male group were greater than that of female group (P <0.05). TheRV global and inflow EF of male group is slightly lower than that of female group (P <0.05), and there is no statistical significance in contrast of RV body and inflow EFbetween the2groups. Inner group comparison of male and female group respectivelyillustrates regional RV ESV inflow> body>outflow(P<0.05). RV regional EFinflow>outflow>body(P<0.05). RV inflow EDV and SV are both greater than outflowand body(P <0.05), which accounts for larger ratio in the global EDV, SV. Innergroup comparison of different age groups of normal adults shows that RV inflow EDV,SV and EF are greater than RV body and outflow((P <0.05). The relation of RVregional EF is as follows: RV inflow>outflow> body(P <0.05). The differencebetween RV global and3regional EF has no statistical significance when comparisonare taken among different age groups, while RV global EDV difference amongdifferent age groups has statistical significance(P <0.05), and with age, the differenceof the ratio of RV3regional EDV, ESV, and SV in the global RV has no statisticalsignificance.Conclusions:Global and regional volume-time curves pf RV were “U-shaped”, whichis quite consistent. There is difference of RV global and3regional volumes, SV, andsystolic function between adult male and female. RV3regional volume and systolicfunction have different features; RV inflow makes great contribution to RV globalvolume and systolic function. With age,RV global EDV shows a trend of decline,butthere is no statistical significance in the difference of RV global and3regional EF.The ratio of RV3regional EDV, ESV and SV in the global RV remains basicallyconstant,RV inflow shows the largest.Evaluation of RV global and regional volumeand systolic function using RT3DE and quantitative analysis rechniques was found tobe quickly and accurately.