functional-assessment-donor-heart-during-ex-situ-perfusion-insights

Functional Assessment of the Donor Heart During <em>Ex Situ</em> Perfusion: Insights from Pressure-Volume Loops and Surface Echocardiography

Heart transplantation remains the gold standard treatment for advanced heart failure. However, the current critical organ shortage has resulted in the ...

coronary-angiography-during-ex-situ-heart-perfusion-in-a-porcine-model

Coronary Angiography During Ex-Situ Heart Perfusion in a Porcine Model

Heart transplantation is the gold standard treatment for advanced heart failure. The procurement of extended criteria donors (ECD) increases due to the ...

Groupe Hospitalier Paris Saint Joseph

Marie Lannelongue Hospital

The spatial and temporal evolution of the field backscattered by a beating heart while illuminated with a coherent light reveals its macro- and microvascularization in real time. To perform these vascularization images, we use a recently published method of laser speckle imaging, based on the selective detection of spatially depolarized speckle field that is mainly generated by multiple scattering. We consider the calculation of the speckle contrast, by a spatial or temporal estimation. We show that the signal-to-noise ratio of the observed vascular structure can be noticeably increased by a postprocessing method implying the calculation of a motion field that allows the selection of similar frames extracted from different heartbeat periods. This later optimization reveals vascular microstructures with a spatial resolution of the order of  .

Imaging the vasculature of a beating heart by dynamic speckle: the challenge of a quasiperiodic motion.

Right ventricular failure after left ventricular assist device (LVAD) implantation is a major concern that remains challenging to predict. We sought to investigate the relationship between preoperative pulmonary artery pulsatility index (PAPi) and mortality after LVAD implantation.

Article Total : 2	Year
Publication title	2022
Publication title	2024

Article	Year
Imaging the vasculature of a beating heart by dynamic speckle: the challenge of a quasiperiodic motion. Journal of biomedical optics\| PubMed ID: 37114200	2023
Association between pulmonary artery pulsatility and mortality after implantation of left ventricular assist device. ESC heart failure\| PubMed ID: 38581135	2024

Ali Akamkam

Biography

JoVE Journal Publications

Other Publications