Title :
Effects of spatial compounding upon image resolution
Author :
He, Ping ; Xue, Kefu ; Wang, Yiwei
Author_Institution :
Dept. of Biomed. & Human Factors Eng., Wright State Univ., Dayton, OH, USA
fDate :
30 Oct-2 Nov 1997
Abstract :
For a typical ultrasound scanner which has a lateral resolution several times worse than the axial resolution, computer simulation indicates that spatial compounding can significantly improve the lateral resolution while slightly worsens the axial resolution. The mean resolution of the compound image improves continuously when the compound angle is increased from 0° to 120°, and then changes insignificantly when the compound angle is further increased to 360°. The resolution of the compound image however, can be severely deteriorated by the position error of the center of rotation of compound scan. A two-step calibration procedure is developed for accurately determining the location of the center of rotation
Keywords :
biomedical ultrasonics; calibration; digital simulation; image resolution; medical image processing; axial resolution; compound angle; compound image; compound scan rotation center; computer simulation; lateral resolution; medical US image resolution; medical diagnostic imaging; position error; spatial compounding effects; two-step calibration procedure; typical ultrasound scanner; Biological tissues; Biomedical engineering; Bones; Computer simulation; Helium; Human factors; Image reconstruction; Image resolution; Spatial resolution; Ultrasonic imaging;
Conference_Titel :
Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-4262-3
DOI :
10.1109/IEMBS.1997.757681
