Motion-compensated digital subraction angiography

Magnus Hemmendorff; Hans Knutsson; Mats T. Andersson; Torbjorn Kronander

doi:10.1117/12.348538

21 May 1999 Motion-compensated digital subraction angiography

Magnus Hemmendorff, Hans Knutsson, Mats T. Andersson, Torbjorn Kronander

Proceedings Volume 3661, Medical Imaging 1999: Image Processing; (1999) https://doi.org/10.1117/12.348538
Event: Medical Imaging '99, 1999, San Diego, CA, United States

Abstract

Digital subtraction angiography, whether based on traditional X-ray or MR, suffers from patient motion artifacts. Until now, the usual remedy is to pixel shift by hand, or in some cases performing a global pixel shift semi-automatically. This is time consuming, and cannot handle rotations or local varying deformations over the image. We have developed a fully automatic algorithm that provides for motion compensation in the presence of large local deformations. Our motion compensation is very accurate for ordinary motions, including large rotations and deformations. It does not matter if the motions are irregular over time. For most images, it takes about a second per image to get adequate accuracy. The method is based on using the phase from filter banks of quadrature filters tuned in different directions and frequencies. Unlike traditional methods for optical flow and correlation, our method is more accurate and less susceptible to disturbing changes in the image, e.g. a moving contrast bolus. The implications for common practice are that radiologists' time can be significantly reduced in ordinary peripheral angiographies and that the number of retakes due to large or local motion artifacts will be much reduced.

Citation Download Citation

Magnus Hemmendorff, Hans Knutsson, Mats T. Andersson, and Torbjorn Kronander "Motion-compensated digital subraction angiography", Proc. SPIE 3661, Medical Imaging 1999: Image Processing, (21 May 1999); https://doi.org/10.1117/12.348538

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