Abstract

Introduction In cardiovascular obstructions, as Coarctation of the Aorta (CoA), guidelines recommend treatment based on a relevant pressure drop (ΔP). Diagnostic ΔP is estimated by simplified Bernoulli (SB) and is measured as peak-to-peak (PtP) ΔP via catheterization. The divergences amid methods are understood, but it is common practice to widely and positively accept both as valid diagnostic. Recently, simplified advective work-energy relative pressure (SAW) to correct SB by considering the full velocity profile for the ΔP computation. Purpose To verify the correctness of peak flow derived pressure drop via maximal velocity (SB), and full flow profile (SAW) versus clinical gold-standard PtP ΔP in a CoA phantom. Methods An MRI-compatible and pulsatile CoA phantom was built and tested in eight configurations, with four levels of obstruction (9, 11 and …