In part, the disclosure relates to method of displaying a representation of an artery. The method may include storing an intravascular image dataset in a memory device of a diagnostic imaging system, the intravascular image dataset generated in response to intravascular imaging of a segment of an artery； automatically detecting lumen boundary of the segment on a per frame basis； automatically detecting EEL and displaying a stent sizing workflow. In part, the disclosure also relates to automatically detecting one or more regions of calcium relative to lumen boundary of the segment； calculating an angular or circumferential measurement of detected calcium for one or more frames； calculating a calcium thickness of detected calcium for one or more frames； and displaying the calcium thickness and the angular or circumferential measurement of detected calcium for a first frame of the one or more frames.
