Modeling Based Image Reconstruction in Time-Resolved Contrast-Enhanced Magnetic Resonance Angiography (CE-MRA)

نویسندگان

  • F. T. A. W. Wajer
  • J. van den Brink
  • M. Fuderer
  • D. van Ormondt
  • J. A. C. van Osch
  • R. de Beer
چکیده

We have worked on the measurement protocol and related image reconstruction of 4D data sets in the field of time-resolved Contrast-Enhanced Magnetic Resonance Angiography (CE-MRA). The method aims at improving the interpolation of sparsely sampled -space data. It is based on exploiting prior knowledge on the time courses (TCs) of the image pixels, when monitoring the uptake of contrast agents in the blood vessels. The result is compared with an existing approach called 3D-TRICKS. Keywords— Magnetic resonance angiography, contrast agent, image reconstruction, scan-time reduction, modeling of pixel time courses.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

High spatial and temporal resolution dynamic contrast-enhanced magnetic resonance angiography (CE-MRA) using compressed sensing with magnitude image subtraction

PURPOSE We propose a compressed-sensing (CS) technique based on magnitude image subtraction for high spatial and temporal resolution dynamic contrast-enhanced MR angiography (CE-MRA). METHODS Our technique integrates the magnitude difference image into the CS reconstruction to promote subtraction sparsity. Fully sampled Cartesian 3D CE-MRA datasets from 6 volunteers were retrospectively under...

متن کامل

Time-resolved mr venography pre catheter-based ablation for atrial fibrillation

Objective The purpose of this study was to evaluate Time-resolved MR venography (TR-MRV) of the pulmonary venous circulation using the time-resolved angiography with interleaved stochastic trajectories (TWIST) method of time-resolved MRA (TR-MRA) and compare it with the more commonly used conventional Contrast enhanced magnetic resonance angiography (CE-MRA) approach in atrial fibrillation pati...

متن کامل

Recent advances in 3D time-resolved contrast-enhanced MR angiography.

Contrast-enhanced magnetic resonance angiography (CE-MRA) was first introduced for clinical studies approximately 20 years ago. Early work provided 3-4 mm spatial resolution with acquisition times in the 30-second range. Since that time there has been continuing effort to provide improved spatial resolution with reduced acquisition time, allowing high resolution 3D time-resolved studies. The pu...

متن کامل

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...

متن کامل

High-resolution dynamic CE-MRA of the thorax enabled by iterative TWIST reconstruction.

PURPOSE To evaluate the clinical benefit of using a new iterative reconstruction technique fully integrated on a standard clinical scanner and reconstruction system using a TWIST acquisition for high-resolution dynamic three-dimensional contrast-enhanced MR angiography (CE-MRA). METHODS Low-dose, high-resolution TWIST datasets of 11 patients were reconstructed using both standard GRAPPA-based...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2002