Wavelet enhancement method to visualise heart blood flow

Alfredo O. Rodriguez; Peter Mansfield

doi:10.1117/12.387653

6 June 2000 Wavelet enhancement method to visualise heart blood flow

Alfredo O. Rodriguez, Peter Mansfield

Proceedings Volume 3979, Medical Imaging 2000: Image Processing; (2000) https://doi.org/10.1117/12.387653
Event: Medical Imaging 2000, 2000, San Diego, CA, United States

Abstract

Flow images generated with Echo-Planar Imaging (EPI) show a poor Signal-to-Noise Ratio (SNR). To improve the resolution of EPI flow maps, so a better SNR can be obtained without loss of spatial resolution and with minimal sacrifice of motion effects. The continuous transform of Coiflets wavelet is applied to 2D velocity maps to enhance image SNR. Wavelet coefficients of velocity maps of the cardiac chambers and the descending aorta were calculated. These velocity maps were earlier obtained by Half Fourier Echo-Planar Imaging (HF-EPI). Wavelet coefficient images and contour maps are shown. The enhanced images are compared with previous velocity maps. Cardiac contour maps show hemodynamic patterns in cardiac chambers and descending aorta. Improvement of image quality with other wavelets, such as Mexican Hat, Morlet, Meyer, Daubechies, is briefly discussed.

Citation Download Citation

Alfredo O. Rodriguez and Peter Mansfield "Wavelet enhancement method to visualise heart blood flow", Proc. SPIE 3979, Medical Imaging 2000: Image Processing, (6 June 2000); https://doi.org/10.1117/12.387653

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