Cardiac imaging segmentation by application delineates three principal use‑cases: Diagnostic imaging, interventional imaging, and research/clinical‑trial imaging. Diagnostic imaging accounts for the largest share, roughly 55 % of total revenue, because it underpins routine assessment of coronary artery disease, heart failure, and congenital anomalies across hospitals and outpatient centers. Interventional imaging contributes about 30 % and is driven by catheter‑based procedures, structural heart interventions, and electrophysiology guidance, where real‑time visualization directly influences procedural success and cost structures. Research and clinical‑trial imaging represents the remaining 15 %, reflecting investments in novel contrast agents, AI‑enhanced image analysis, and longitudinal outcome studies that, while smaller in volume, command higher unit prices and shape future technology adoption. Together, these applications form the backbone of the cardiac imaging market, and their relative weight determines capital allocation, pricing dynamics, and growth trajectories within the broader market taxonomy.