Title :
Hexagonal adaptive filtering on compound ultrasound images
Author :
Ortiz, Sonia H Contreras ; Chiu, Tsuicheng ; Fox, Martin D.
Author_Institution :
Biomed. Eng. Program, Univ. of Connecticut, Storrs, CT, USA
fDate :
Aug. 30 2011-Sept. 3 2011
Abstract :
This paper describes an approach to improve the contrast and signal to noise ratio on ultrasound images. Images with sub-pixel lateral displacements were re-sampled using a hexagonal grid, registered and compounded. The resultant image was filtered using a hexagonal adaptive masking filter. This approach was evaluated with simulated images and real images from a breast phantom. The results show total improvements in signal to noise ratio of up to 313% in simulated images, and 182% in phantom images. Contrast to noise ratio was improved by 286% in simulated images and 56% in phantom images.
Keywords :
adaptive filters; biological organs; biomedical ultrasonics; gynaecology; image registration; image sampling; medical image processing; phantoms; breast phantom; compound ultrasound image; contrast-to-noise ratio; hexagonal adaptive filtering; hexagonal adaptive masking filter; hexagonal grid; phantom image; resampling; signal-to-noise ratio; subpixel lateral displacement; Adaptive filters; Compounds; Imaging phantoms; Signal to noise ratio; Speckle; Ultrasonic imaging; Humans; Phantoms, Imaging; Ultrasonography;
Conference_Titel :
Engineering in Medicine and Biology Society, EMBC, 2011 Annual International Conference of the IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-4121-1
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2011.6091203
