Method for rapidly determining and reconstructing the peak arterial frame from a time-resolved CE-MRA exam.
Magn Reson Med
; 44(5): 817-20, 2000 Nov.
Article
em En
| MEDLINE
| ID: mdl-11064419
ABSTRACT
A method that determines the information necessary to reconstruct a single vascular image from a time-resolved CE-MRA exam is presented. Raw k-space data are used to approximate the time course of the contrast passage prior to image reconstruction. The resulting k-space contrast curve is used to select the data corresponding to peak arterial enhancement. These data are reconstructed and immediately presented for physician review, with the entire time-series of images available at a later time for more detailed diagnosis. This approach dramatically reduces the latency between acquisition of large 4D (3D plus time) data sets and presentation of a diagnostic quality time frame. This algorithm has proven successful in the imaging of several anatomical regions and-in exams that do not require a breath hold-permits the use of an acquisition method that produces a contrast-enhanced angiogram without a timing scan.
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Base de dados:
MEDLINE
Assunto principal:
Artérias
/
Processamento de Imagem Assistida por Computador
/
Angiografia por Ressonância Magnética
Idioma:
En
Ano de publicação:
2000
Tipo de documento:
Article