Simultaneous high spatial low temporal resolution magnetic resonance (MR) sequence for dynamic contrast enhanced (DCE) magnetic resonance imaging (MRI)

摘要

A dual magnetic resonance imaging method simultaneously acquires a first and a second time series of MR images wherein the temporal resolution of the first time series of images is larger than that of the second time series while the spatial resolution of the first time series of images is smaller than that of the second time series. Accordingly, in the context of DCE-MRI, the first time series can be used to determine the arterial input function (AIF) while the second time series can be used to determine the concentration time course in the tissue of interest, e.g. in a vessel wall. Therefore, both the AIF and the tissue time course can be acquired with their optimal dynamic signal range.

主权项

1. A magnetic resonance (MR) system for imaging a subject, said system comprising:
an MR scanner defining an examination volume and configured to:
apply an imaging sequence to the examination volume, the imaging sequence including:
a plurality of saturation pulses;after a first saturation delay (SD) after at least one of the plurality of saturation pulses, collecting image data for a first image in a first shot spaced the first SD from the saturation pulse; and,after a second SD after the at least one of the plurality of saturation pulses, collecting image data for one of a plurality of second images in a second shot spaced the second SD from the saturation pulse; and,in response to the imaging sequence, receive the image data for the first image and the plurality of second images, a temporal resolution of the second images exceeding a temporal resolution of the first image, and a spatial resolution of the first image exceeding a spatial resolution of the second images.