Abstract: A method, apparatus, and computer program product are provided herein to facilitate clinical diagram generation and interaction. Methods may include: providing for display of a clinical diagram, where the clinical diagram includes a depiction of the vascular system, where vessels of the vascular system include a plurality of vessel segments, where each segment is formed from a pair of cardinal splines and end lines between adjacent ends of the cardinal splines; providing for generation of a clinical report associated with the clinical diagram; and populating the clinical report in response to user input received in the clinical diagram, where the user input is indicative of at least one clinical finding and a location corresponding to the user input based on a segment selected by the user input.