𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Time-resolved contrast-enhanced coronary magnetic resonance angiography with highly constrained projection reconstruction

✍ Scribed by Lan Ge; Xiaoming Bi; Peng Lai; Debiao Li

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
769 KB
Volume
28
Category
Article
ISSN
0730-725X

No coin nor oath required. For personal study only.

✦ Synopsis

Contrast-enhanced magnetic resonance angiography (MRA) is a promising technique for coronary artery imaging. The blood signal changes during the contrast injection will result in image artifacts, blurring and relatively low signal-to-noise ratio, when the k-space segments from different cardiac cycles are combined to reconstruct the final image as "time averaged." Thus, it is important to acquire data during maximal blood signal enhancement for first-pass, contrast-enhanced MRA, and relatively high temporal resolution is required. This work demonstrated the feasibility of highly constrained backprojection reconstruction for time-resolved, contrast-enhanced coronary MRA. With this method, the temporal resolution can be increased. In addition, coronary artery images around blood signal enhancement peak have significantly improved contrast-to-noise ratio and suppressed artifacts compared to the composite images which were collected during a much longer acquisition time during substantial blood signal changes.

📜 SIMILAR VOLUMES

Contrast-enhanced peripheral magnetic re
Contrast-enhanced peripheral magnetic resonance angiography using time-resolved vastly undersampled isotropic projection reconstruction
✍ Jiang Du; Timothy J. Carroll; Ethan Brodsky; Aiming Lu; T.M. Grist; Charles A. M 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 528 KB

## Abstract ## Purpose To investigate the application of time‐resolved vastly undersampled isotropic projection reconstruction (VIPR) in contrast‐enhanced magnetic resonance angiography of the distal extremity (single station), and peripheral run‐off vasculature in the abdomen, thigh, and calf (th

Reduction of reconstruction time for tim
Reduction of reconstruction time for time-resolved spiral 3D contrast-enhanced magnetic resonance angiography using parallel computing
✍ Bryan Kressler; Pascal Spincemaille; Martin R. Prince; Yi Wang 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 285 KB

## Abstract Time‐resolved 3D MRI with high spatial and temporal resolution can be achieved using spiral sampling and sliding‐window reconstruction. Image reconstruction is computationally intensive because of the need for data regridding, a large number of temporal phases, and multiple RF receiver

Time resolved contrast enhanced intracra
Time resolved contrast enhanced intracranial MRA using a single dose delivered as sequential injections and highly constrained projection reconstruction (HYPR CE)
✍ Yijing Wu; Kevin Johnson; Steven R. Kecskemeti; Kang Wang; Oliver Wieben; Beverl 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 796 KB

## Abstract Time‐resolved contrast‐enhanced magnetic resonance angiography of the brain is challenging due to the need for rapid imaging and high spatial resolution. Moreover, the significant dispersion of the intravenous contrast bolus as it passes through the heart and lungs increases the overlap

Contrast-enhanced intracranial magnetic
Contrast-enhanced intracranial magnetic resonance angiography with a spherical shells trajectory and online gridding reconstruction
✍ Yunhong Shu; Matt A. Bernstein; John Huston III; Dan Rettmann 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 538 KB

## Abstract ## Purpose: To evaluate the feasibility of applying the shells trajectory to single‐phase contrast‐enhanced magnetic resonance angiography. ## Materials and Methods: Several methods were developed to overcome the challenges of the clinical implementation of shells including off‐reson

Three-dimensional reconstruction of limi
Three-dimensional reconstruction of limited-view projections for contrast-enhanced magnetic resonance angiography at high temporal and spatial resolution
✍ Yuexi Huang; David Gurr; Graham A. Wright 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 730 KB

## Abstract The feasibility of reconstructing three‐dimensional (3D) MRI data sets from limited‐view projections is investigated in phantom and in vivo animal studies to improve the temporal resolution of magnetic resonance angiography without sacrificing spatial resolution. Thirty‐two pairs of ort

High temporal and spatial resolution 3D
High temporal and spatial resolution 3D time-resolved contrast-enhanced magnetic resonance angiography of the hands and feet
📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 36 KB

Blackwell Futura Media Services designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 Credit TM . Physicians should only claim credit commensurate with the extent of their participation in the activity. Blackwell Futura Media Services is accredited by the Accreditation Co