Global Two-dimensional Diagnostic Ultrasound Devices Market By Type (Fanshaped Scanning , Linear Scanning , and Convex Array Scanning), By Application (Radiology/Oncology , Cardiology , Obstetrics & Gynecology , and Mammography/Breast), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029