BackgroundProgressive autograft dilation and need for later reoperation remain major concerns of the Ross procedure. The study investigates clinical outcome after operation, including a longitudinal analysis dimensions over 25 years.MethodsFrom November 1991 to April 2019, 137 patients underwent procedure at University Hospitals UCL (Université catholique de Louvain)-Brussels Ghent. Inclusion c...

Given a set of n points S in the Euclidean plane, we address the problem of computing an annulus A, (open region between two concentric circles) of largest width, that partitions S into a subset of points inside and a subset of points outside the circles, such that no point p ∈ S lies in the interior of A. This problem can be considered as a maximin facility location problem for n points such t...

We study reducing subspaces for an analytic multiplication operator Mzn on the Bergman space L 2 a(Ar) of the annulus Ar, and we prove that Mzn has exactly 2 reducing subspaces. Furthermore, in contrast to what happens for the disk, the same is true for the Hardy space on the annulus. Finally, we extend the results to certain bilateral weighted shifts, and interpret the results in the context o...

aortic annulus and the presence of dense calcium limit the applicability of two-dimensional imaging in estimating the annulus diameter for valve sizing. This has led to a great debate over the choice for measuring optimal diameter. However, this novel software determines the dimensions of the aortic annulus, including maximum and minimum diameter, perimeter, and cross-sectional area. Prospectiv...

BACKGROUND Mapping of the right free wall in patients with accessory pathways is difficult compared with that of the left free wall where the coronary sinus permits stable and accurate location of the electrodes used for endocardial mapping. Furthermore, the sequential roving catheter method is less satisfactory than multiple simultaneous electrode recordings spanning the circumference of the v...