Abstract: A method for determining a anatomical cavity pressure comprising; obtaining a pressure value comprising a pressure applied to skin of the anatomical cavity by a vessel, the vessel having a first open end and a second end, the first end arranged to contact the skin to encase a portion of the skin, and the vessel being arranged such that a pressure can be applied through the vessel to the encased portion of the skin; obtaining a skin displacement value associated with the obtained pressure value, the skin displacement value comprising a distance of the encased portion of the skin from a baseline while the pressure is being applied; determining, by the processor, a pressure of the anatomical cavity using the obtained pressure value and the obtained skin displacement value, and based on a static force balance of the vessel and the encased portion of the skin while the pressure is being applied.