PANORAMIC ULTRASOUND IMAGING AND ITS CLINICAL APPLICATIONS
A new imaging technology named ultrasound extended -field -of -view imaging(Sie -scape imaging) was developed by Weng and his colleagues in 1996 in order to overcome the longstanding limitation of real -time ultrasound scanner only offering cross -sectional image with very narrow field of vievv. Using this sophisticated imaging technology by some advanced computer pro-cedures, a panoramic ultrasound imaging (PUI) somewhat like CT or MRI can be easily completed while a conventional real -time transducer being moved by free hand. To evaluate the clinical usefulness and prospect of modern PUI, a full digital ultrasound scanner SONOLINE Elegra developed by Siemens has been used from Aug. 1997 to Sep. 1998. This lecture was based on our clinical experience of more than 300 cases obtained during this period. We found that modern PUI could be applied to visualize vari-ous normai and abnormal soft-tissue struc- tures at the most parts of the body, especial-ly suitable to the upper and lower extremi-ties, trunk including the chest and abdominal walls, back and bottom; it also has potential usefulness for demonstrating many viscera and their lesions in different abdominal organs and in obstetrics and gynecology as well. PUI may even be used to clearly show the small parts and their lesions such as thy-roid, breast, scrotum etc. We concluded that PUI features wide cross-sectional views of the body, it is a good complement to conventional real-time ultrasound(gray-scale and color Doppler) in clinical applica-tion.