Diagnostically useful results in real time

A vascular assessment apparatus comprising:

• a processor communicatively coupled to a medical imaging device;
• and
• a memory storing non-transitory computer-readable instructions, which when executed, cause the processor to:
• (a) receive medical images of a coronary vessel tree of a subject from the medical imaging device;
• (b) create a first model based on the medical images, the first model indicative of volumetric dimensions of the coronary vessel tree;
• (c) create a second model based on the first model, the second model indicative of resistances to blood flow within the coronary vessel tree;
• (d) perform a vascular normalization of at least one of the first model or the second model to determine normalized resistances to the blood flow;
• (e) determine fractional flow reserve (“FFR”) values for locations along the first model based on ratios of the resistances specified in the second model to the normalized resistances at the same locations;
• (f) display the FFR values within the first model;
• (g) receive an indication of a virtual stent placement on the first model at a lesion location;
• (h) increase a volume of the first model at the lesion location based on a size of the virtual stent;
• (i) predict changes to the FFR values based on the increased volume of the first model;
• and
• (j) display the predicted changes to the FFR values in relation to the first model.