Application segmentation distinguishes the clinical contexts in which Percutaneous Transhepatic Cholangiography (PTC) is employed, directly shaping revenue streams and resource allocation. The diagnostic application, accounting for the largest share, involves visualization of biliary anatomy to identify obstructive lesions, strictures, or congenital anomalies; its prevalence in hepatobiliary oncology and transplant evaluation drives the bulk of procedure volume and equipment sales. The therapeutic application integrates PTC with interventions such as biliary drainage, stent placement, or stone extraction, thereby extending the procedural episode and generating additional consumable and service income. The research application, though smaller, supports clinical trials and experimental techniques, contributing specialized device demand and data‑generation services. Together, these three application categories constitute the complete Percutaneous Transhepatic Cholangiography market, and their relative weights are reflected in the accompanying pie‑chart. Understanding this Percutaneous Transhepatic Cholangiography segmentation is essential for forecasting growth patterns across hospital departments and geographic markets. Analysts therefore allocate market forecasts proportionally to these application shares, adjusting for regional disease incidence and procedural reimbursement trends.