Method and system for image processing to determine patient-specific blood flow characteristics

A method for assessment of stenosis in an arterial tree of a living being, comprising the steps of:

• receiving computed first fractional flow reserve values of the arterial tree of the living being calculated from data obtained from non-invasive imaging of the arterial tree;
• obtaining in-artery measured pressure values in arteries of the living being via a measurement device;
• determining second fractional flow reserve values of the arterial tree, based on the obtained in-artery measured pressure values, at positions corresponding to the computed first fractional flow reserve values;
• adjusting the first fractional flow reserve values based on the determined second fractional flow reserve values;
• determining a further first computed fractional flow reserve value at a position for which a determined second fractional flow reserve value is not or not yet available based on at least one of the adjusted computed first fractional reserve values;
• providing an arterial tree model from the non-invasive imaging data of the arterial tree of the living being;
• and
• displaying the computed first further fractional flow reserve value at or near a location in the arterial tree where the computed first further fractional flow reserve value was determined.

A non-transitory computer readable medium having thereon instructions for assessment of stenosis in an arterial tree of a living being, wherein the instructions, when executed on a computer, perform a method that comprises:

• receiving computed first fractional flow reserve values of the arterial tree of the living being calculated from data obtained from non-invasive imaging of the arterial tree;
• receiving measured pressure values obtained via a measurement device from within arteries of the living being;
• determining second fractional flow reserve values of the arterial tree, based on the obtained measured pressure values, at positions corresponding to the computed first fractional flow reserve values;
• adjusting the computed first fractional flow reserve values based on the determined second fractional flow reserve values;
• determining a further first computed fractional flow reserve value at a position for which a determined second fractional flow reserve value is not or not yet available based on at least one of the adjusted computed first fractional reserve values;
• providing an arterial tree model from the non-invasive imaging data of the arterial tree of the living being;
• and
• displaying the computed first further fractional flow reserve value at or near a location in the arterial tree where the computed first further fractional flow reserve value was determined.