Contrast-enhanced coronary MRA

Feasibility of non-contrast-enhanced four dimensional (4D) MRA in head and neck tumors, comparison with contrast-enhanced 4D MRA

BACKGROUND Information of tumor vascular architecture and hemodynamics is important in treating patients with head and neck tumors (HNTs). The purpose of this study is to investigate the feasibility of non-contrast-enhanced four-dimensional magnetic resonance angiography (non-CE 4DMRA) using arterial spin labeling for anatomical and hemodynamic evaluation of vascularity of head and neck tumors....

Evaluation of the diagnostic performance of self-navigated whole-heart contrast-enhanced coronary MRA at 3T

Continuously moving table contrast-enhanced MRA: Technical Development

D. G. Kruger, S. J. Riederer, J. F. Glockner, J. A. Polzin, A. J. Madhuranthakam, H. H. Hu Mayo Clinic, Rochester, MN, United States, GE Medical, Milwaukee, WI, United States Synopsis: Recently a technique has been described in which an image is formed of an extended object while it is moved continuously through the bore of the MR magnet. This initial work described the image formation process,...

Time-Resolved Contrast-Enhanced MRA Using Cartesian Techniques

INTRODUCTION The last decade has seen major advances in the performance capabilities of time-resolved contrast-enhanced (CE) magnetic resonance angiography (MRA). Today, for example, it is possible to generate 3D time-resolved image sets with higher spatial resolution, wider anatomic coverage, better temporal fidelity, and improved image quality while using smaller acquisition times than what w...

Subtraction in View-Shared 3D Contrast-Enhanced MRA

INTRODUCTION The use of a pre-contrast reference image, referred to as a mask, to suppress background signal and improve output contrast-to-noise ratio (CNR) through subtraction is common in contrast-enhanced MR angiography. It is critical that this operation be performed to optimize output image quality. As has been previously reported [1-3] it is advantageous to use complex subtraction for th...