using m-mode echocardiography , right ventricular diameter ( rvd ) , left ventricular diameter ( lvd ) , total cardiac diameter ( tcd ) and aortic root ( aor ) were measured , and the following 5 indices were obtained : rvd/lvd , rvd/tcd , rvd/aor , rvd/bsa ( body surface area ) and tcd/bsa .
C0225883
rvd
C0018787
tcd