new acoustic window for assessing the inferior vena cava collapsibility in humans in the prone position

Objective: ultrasound assessment of inferior vena cava (ivc) collapsibility is performed todetermine the volume status of critically ill patients. we propose a new acoustic windowfor visualizing a vein in a prone patient.case presentation: a healthy volunteer took part in the study. the study protocol includestwo stages: 1) performing a magnetic resonance imaging (mri) examination to determinethe projection of a certain ivc area on the posterior chest surface (holotopy), 2) performingan ultrasound scanning in the area of ivc projection in order to identify it and determineits dimensions.conclusion: the 11th intercostal space parallel to the paraspinal line allows to visualizethe ivc in the prone position. this gives a potential opportunity to use it to assess the ivccollapsibility. its potential advantage is the ability to assess the compressibility of ivc inthe antero-posterior direction