This document discusses cardiac imaging techniques used in the diagnosis and treatment of prosthetic paravalvular leaks (PVLs). Echocardiography, especially 3D transoesophageal echocardiography (TEE), plays a key role in initially diagnosing PVLs, guiding percutaneous closure procedures, and evaluating outcomes. While transthoracic echocardiography is often first used, TEE is needed to confirm clinically significant leaks. Additional techniques like CT, MRI, and angiography can provide further detail. Intraprocedural imaging with TEE and fluoroscopy helps interventional cardiologists properly position closure devices and confirm adequate sealing of leaks.