Zobrazeno 1 - 10
of 35
pro vyhledávání: '"J. Andrew Derbyshire"'
Pseudo‐projection–driven, self‐gated cardiac cine imaging using cartesian golden step phase encoding
Publikováno v:
Magnetic Resonance in Medicine
Purpose To develop and evaluate a novel two‐dimensional self‐gated imaging technique for free‐breathing cardiac cine MRI that is free of motion‐detection overhead and requires minimal planning for motion tracking. Methods Motion along the rea
Autor:
Peter Kellman, Robert J. Lederman, J. Andrew Derbyshire, Cengizhan Ozturk, Mark A. Griswold, Haris Saybasili, Nicole Seiberlich
Publikováno v:
Magnetic Resonance in Medicine. 64:306-312
A real-time implementation of self-calibrating Generalized Autocalibrating Partially Parallel Acquisitions (GRAPPA) operator gridding for radial acquisitions is presented. Self-calibrating GRAPPA operator gridding is a parallel-imaging-based, paramet
Publikováno v:
Magnetic Resonance in Medicine. 64:501-513
MR imaging of the human heart without explicit cardiac synchronization promises to extend the applicability of cardiac MR to a larger patient population and potentially expand its diagnostic capabilities. However, conventional non-gated imaging techn
Publikováno v:
Magnetic Resonance in Medicine. 61:1425-1433
The temporal generalized autocalibrating partially parallel acquisitions (TGRAPPA) algorithm for parallel MRI was modified for real-time low latency imaging in interventional procedures using image domain, B1-weighted reconstruction. GRAPPA coefficie
Autor:
Andres Santos, Manuel Desco, J. Andrew Derbyshire, Elliot R. McVeigh, Smita Sampath, Maria J. Ledesma-Carbayo
Publikováno v:
Magnetic Resonance in Medicine. 59:181-189
We propose a fully automatic cardiac motion estimation technique that uses nonrigid registration between temporally adjacent images to compute the myocardial displacement field from tagged MR sequences using as inputs (sources) both horizontally and
Publikováno v:
Magnetic Resonance in Medicine. 58:206-210
Fully inverting spins, instead of merely saturating them, provides superior contrast for tagging procedures. The resulting improvement in tag contrast-to-noise ratio (CNR) yields higher-precision tag detection. Also, thinner slices and hence reduced
Publikováno v:
Magnetic Resonance in Medicine. 56:676-680
Rapid flow imaging was achieved with a partial field of view (pFOV) spiral motion-encoded technique. The FOV and the acquisition time were reduced by a factor of 2 by undersampling k-space. The pFOV spiral k-space trajectory aliased signals from outs
Publikováno v:
Magnetic Resonance in Medicine. 54:1455-1464
Many cardiac abnormalities are of a transient nature, creating a beat-to-beat variation in myocardial function. This work presents the cardiac imaging technique for the measurement of regional function during transient cardiac phenomena. All informat
Publikováno v:
Journal of Magnetic Resonance Imaging. 18:612-615
A METHOD IS PROPOSED FOR automatically calculating the in-plane rotation for doubly-oblique slice geometry. Doubly-oblique slice orientation is commonly used in applications such as cardiac imaging, and results in an in-plane rotation of the body cro
Autor:
Axel Krieger, Attila Tanacs, J. Andrew Derbyshire, Robert C. Susil, Ergin Atalar, Gabor Fichtinger, Louis L. Whitcomb
Publikováno v:
Radiology
Academic Radiology
Academic Radiology
Cataloged from PDF version of article. The purpose of this study was to demonstrate the use of a transrectal system that enables precise magnetic resonance (MR) image guidance and monitoring of prostate interventions. The system used a closed-bore 1.