New model and algorithm for restoring medical ultrasound rf images

Jorn H. Hokland; Patrick A. Kelly

doi:10.1117/12.208738

12 May 1995 New model and algorithm for restoring medical ultrasound rf images

Jorn H. Hokland, Patrick A. Kelly

Proceedings Volume 2434, Medical Imaging 1995: Image Processing; (1995) https://doi.org/10.1117/12.208738
Event: Medical Imaging 1995, 1995, San Diego, CA, United States

Abstract

Observed medical ultrasound radio-frequency (rf) images are blurred and noisy representations of the true tissue reflectance. The blurring of the specular reflections that occur at boundaries between regions of different tissue types is particularly troublesome, and it is difficult to remove with standard restoration techniques such as Wiener filtering. In this paper we develop an iterative restoration/segmentation algorithm for 2-D ultrasound rf images, that is based on a new statistical image model incorporating spatial smoothness constraints and a physically accurate model for edge reflections. The algorithm alternates steps of restoration and segmentation, calculated using simulated annealing, and includes estimation of reflectance parameters. The smoothness constraints serve to regularize the overall procedure, and the edge reflection model allows the algorithm to use the specular reflections to help locate region boundaries. The resulting restorations of some simulated and real rf-images are significantly better than those produced by Wiener filtering.

Citation Download Citation

Jorn H. Hokland and Patrick A. Kelly "New model and algorithm for restoring medical ultrasound rf images", Proc. SPIE 2434, Medical Imaging 1995: Image Processing, (12 May 1995); https://doi.org/10.1117/12.208738

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available