Parallel imaging strategies for high-speed magnetic resonance diffusion imaging

Roland Bammer; Rudolf Stollberger; Manfred J. Augustin; Thomas Seifert; S. Strasser-Fuchs; Paul Wach; H. P. Hartung; F. Fazekas

doi:10.1117/12.383397

20 April 2000 Parallel imaging strategies for high-speed magnetic resonance diffusion imaging

Roland Bammer, Rudolf Stollberger, Manfred J. Augustin, Thomas Seifert, S. Strasser-Fuchs, Paul Wach, H. P. Hartung, F. Fazekas

Author Affiliations +

Proceedings Volume 3978, Medical Imaging 2000: Physiology and Function from Multidimensional Images; (2000) https://doi.org/10.1117/12.383397
Event: Medical Imaging 2000, 2000, San Diego, CA, United States

Abstract

By using multiple receiver coils in conjunction with parallel MR signal reception, the speed of image acquisition can be dramatically increased. In this work the feasibility of such parallel imaging (PI) methods for fast brain imaging was studied along with their potential application for diffusion- weighted imaging (DWI). All measurements were performed by using a four-element prototype-surface coil. Parallel image reconstruction in the image domain was performed off-line on a dedicated MR image processing workstation. For appropriate image quality, coil sensitivity maps must be of sufficient quality or must be properly filtered. Thus, a novel filtering method was employed. By means of diffusion-weighted single- shot PI, the advantage of motion insensitivity of single shot echo-planar imaging (EPI) and the increased k-space velocity of multi-shot EPI can be combined; hence, they need not be phase navigated. Therefore, the images are free from ghostings, and artifacts arising from resonance offsets (e.g., B₀, susceptibility artifacts, and chemical shift) are less prominent than in conventional single-shot EPI. Furthermore, image blurring was markedly reduced. Preliminary results in neuroimaging promise that PI can become a helpful tool for rapid imaging in the CNS, although further improvement of coil sensitivity is required for sufficient SNR in parallel DWI.

Citation Download Citation

Roland Bammer, Rudolf Stollberger, Manfred J. Augustin, Thomas Seifert, S. Strasser-Fuchs, Paul Wach, H. P. Hartung, and F. Fazekas "Parallel imaging strategies for high-speed magnetic resonance diffusion imaging", Proc. SPIE 3978, Medical Imaging 2000: Physiology and Function from Multidimensional Images, (20 April 2000); https://doi.org/10.1117/12.383397

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