answer of this question would be a big challange in imaging cardiology

Rv as a whole dosen't show the spiral motion like lv because of the muscle fibre orientation. That's why the rvef is on lower side as it is not designed to be the systemic ventricle

As far as I know the RV has almost no rotation but most likely  a "tightening belt" motion. Hope this paper could be of help:

J Am Soc Echocardiogr. 2008 Dec;21(12):1326-30. doi: 10.1016/j.echo.2008.09.014.

Dear Giovanni,

Thanks a lot for your answer. I have read their studies. but as you know, frist of all, we have to give an exact/or the best estimation of a right ventricular reconstruction/or modeling. Gusafsson et al. works are based on ellipsoid modeling of the RV and LV!! and then Speckle tracking would be applied on such this RV modeling. But I think we wolud miss a lot of data of RV becuase of the complexity of the geometrical shape of RV, not only statically but also dynamically at the same time. Of course there are some geometrizations/triangulations of the RV based on taged MRI which show, RV moves longitudinally and then rotates clockwise at the apical level in systolic phase. I feel something is wrong and a new technique needs to model RV, I do not mean, image reconstruction of the RV like CMR studies........

Ther already is lot of work done on RV. Its no longer a ignored chamber.You can get closer to true RVEF if you wish to when needed

yes, you are right about RV studies, but on the whole , RV compelxity needs a new software with a new mathematical frameworks to model it. I think , we shoud solve this questions explicity: Right ventricular fiber orientations? then RV rotational related to RV fiber arrangment? fiber orientations have algebraic equations where are representable in computer. finding these algebraic equation is my research proposal....

one aspect is TAPSE and speckle tracking ,TDI in presence of severe TR ,prosthetic valve . Studing the muscle fibre orientation of Rv ..how will it add to any practical implications.