Ultrasound in Medicine and Biology (UMB) is the official journal of the WFUMB. The journal publishes original peer-reviewed manuscripts on significant novel advances in clinical diagnostic, interventional and therapeutic applications, new and improved clinical techniques, the physics, engineering and technology of ultrasound in medicine and biology, and the interactions between ultrasound and biological systems, including bioeffects. Extended critical reviews of subjects of contemporary interest in the field are also published, in addition to occasional editorial articles, clinical and technical notes, book reveiws, letters to the editor and a calendar of forthcoming meetings. It is the aim of the journal to meet the information and publication requirements of the clinicians, scientists, engineers and other professionals who constitute the biomedical ultrasonic community.