𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Recessed elliptical-centric view-ordering for contrast-enhanced 3D MR angiography of the carotid arteries

✍ Scribed by R. Watts; Y. Wang; B. Redd; P.A. Winchester; K.C. Kent; H.L. Bush; M.R. Prince

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
514 KB
Volume
48
Category
Article
ISSN
0740-3194

No coin nor oath required. For personal study only.

✦ Synopsis

Fast arterial-venous transit in the carotid arteries requires accurate, reliable timing of the acquisition to the bolus transit to maximize arterial signal and minimize venous artifacts. The rising edge of the bolus is not utilized in conventional elliptical-centric view-ordering because the critical k-space center must be acquired with full arterial enhancement. In this study, a recessed elliptical-centric view-ordering scheme is introduced in which the k-space center is acquired a few seconds following scan initiation. The recessed view-ordering is shown to be more robust to timing errors than the conventional scheme in a study of 37 patients.

📜 SIMILAR VOLUMES

Undersampled elliptical centric view-ord
Undersampled elliptical centric view-order for improved spatial resolution in contrast-enhanced MR angiography
✍ Ananth J. Madhuranthakam; Houchun H. Hu; Andrew V. Barger; Clifton R. Haider; Da 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 981 KB

## Abstract Although contrast‐enhanced MR angiography (CE‐MRA) has been successfully developed into a routine clinical imaging technique, there is still need for improved spatial resolution in a given acquisition time. Undersampled projection reconstruction (PR) techniques maintain spatial resoluti

Effects of cardiac motion on 3D contrast
Effects of cardiac motion on 3D contrast-enhanced MR angiography of the carotid arteries
✍ Dean Jeffery; Derek J. Emery; Alan H. Wilman 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 328 KB 👁 1 views

## Abstract ## Purpose: To determine the effect of cardiac‐related carotid artery motion on the image quality of 3D contrast‐enhanced MR angiography (CEMRA) in patients presenting with suspected carotid artery disease. ## Materials and Methods: Twenty patients with suspected carotid artery disea

Dependence of venous enhancement on the
Dependence of venous enhancement on the field of view in 3D contrast-enhanced MRA using the elliptical centric view order
✍ Sean B. Fain; Stephen J. Riederer 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 304 KB

The dependence of venous suppression on the acquisition field of view (FOV) in elliptical centric 3D contrast-enhanced magnetic resonance angiography (CE-MRA) is studied theoretically and experimentally. It is hypothesized that a reduced FOV in an arterial phase acquisition results in improved venou

Sensitivity encoding (SENSE) for contras
Sensitivity encoding (SENSE) for contrast-enhanced 3D MR angiography of the abdominal arteries
✍ Markus Born; Winfried A. Willinek; Jürgen Gieseke; Marcus von Falkenhausen; Hans 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 267 KB 👁 1 views

## Abstract ## Purpose To assess sensitivity encoding (SENSE) for contrast‐enhanced MR angiography (CE‐MRA) of the abdominal arteries in comparison with standard MRA protocols. ## Materials and Methods In 22 patients MRA of the abdominal arteries was performed twice (once using a standard protoc

Quantitative evaluation of nonrepetitive
Quantitative evaluation of nonrepetitive phase-encoding orders for first-pass, 3D contrast-enhanced MR angiography
✍ Alan H. Wilman; Timothy C.H. Yep; Osama Al-Kwifi 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 280 KB 👁 1 views

## Abstract In this work, a detailed quantitative comparison was made of many alternative phase‐encoding strategies for first‐pass 3D MR angiography where each phase encode is only sampled once during the transient passage of contrast agent. A series of standard sequential and centric phase‐encodin

Semiautomatic segmentation and stenosis
Semiautomatic segmentation and stenosis quantification of 3D contrast-enhanced MR angiograms of the internal carotid artery
✍ Cornelis M. van Bemmel; Max A. Viergever; Wiro J. Niessen 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 433 KB 👁 1 views

## Abstract A technique is presented for the segmentation and quantification of stenosed internal carotid arteries (ICAs) in 3D contrast‐enhanced MR angiography (CE‐MRA). Segmentation with sub‐pixel accuracy of the ICA is achieved via level‐set techniques in which the central axis serves as the ini