TY - CHAP M1 - Book, Section TI - Venous Imaging/Duplex Ultrasound A1 - Weiss, Robert A. A1 - Weiss, Margaret A. A1 - Beasley, Karen L. PY - 2012 T2 - Sclerotherapy and Vein Treatment, 2e AB - Proper diagnosis of venous system disease often requires both functional and anatomic information about the venous circulation. Functional tests such as the maximum venous outflow (MVO), the venous refilling time (VRT), and the calf muscle pump ejection fraction (MPEF) (see Chapter 9) are extremely useful as measures of whole leg or regional venous function but can detect only regionally significant reflux or a significant impediment to venous outflow. Anatomic imaging of the venous system does not assess overall hemodynamic function but can detect even very small amounts of local and regional reflux and can visualize both obstructing and nonobstructing thrombus. SN - PB - McGraw Hill LLC CY - New York, NY Y2 - 2024/10/15 UR - dermatology.mhmedical.com/content.aspx?aid=1175620487 ER -