MR angiography with oblique gradient-recalled echo technique

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Magnetic resonance (MR) angiography with use of an oblique gradient-recalled echo sequence is discussed. The technique was developed for the efficient acquisition of angiographic data when the desired projection direction is already known. The raw data set is acquired directly at the projection angle; thus, a high-resolution projection is created, despite a decrease in the number of phase-encoding views acquired per axial image. Excessive reduction in the number of views acquired causes a loss of contrast in the projection images rather than a loss of resolution. High-resolution, high-contrast MR projection angiograms can be obtained in 2 1/2 minutes, with 50 3-mm sections and 48 phase encodings per section, a repetition time of 50 msec, an echo time of 15 msec, and a flip angle of 45°. This represents one-fifth the time required for a conventional angiographic image. Venous blood is successfully saturated when the saturation band is placed at a fixed distance from the current imaging section. The method is demonstrated in the imaging of the carotid bifurcation in healthy volunteers and of a patient who had undergone carotid endarterectomy.

Original languageEnglish (US)
Pages (from-to)461-466
Number of pages6
JournalRadiology
Volume176
Issue number2
StatePublished - 1990

Fingerprint

Magnetic Resonance Angiography
Carotid Endarterectomy
Healthy Volunteers
Angiography
Magnetic Resonance Spectroscopy

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology

Cite this

MR angiography with oblique gradient-recalled echo technique. / Brown, D. G.; Riederer, Stephen J; Jack, Clifford R Jr.; Farzaneh, F.; Ehman, Richard Lorne.

In: Radiology, Vol. 176, No. 2, 1990, p. 461-466.

Research output: Contribution to journalArticle

@article{7b12c25bd4314f1e8bc1998ad27fbed0,
title = "MR angiography with oblique gradient-recalled echo technique",
abstract = "Magnetic resonance (MR) angiography with use of an oblique gradient-recalled echo sequence is discussed. The technique was developed for the efficient acquisition of angiographic data when the desired projection direction is already known. The raw data set is acquired directly at the projection angle; thus, a high-resolution projection is created, despite a decrease in the number of phase-encoding views acquired per axial image. Excessive reduction in the number of views acquired causes a loss of contrast in the projection images rather than a loss of resolution. High-resolution, high-contrast MR projection angiograms can be obtained in 2 1/2 minutes, with 50 3-mm sections and 48 phase encodings per section, a repetition time of 50 msec, an echo time of 15 msec, and a flip angle of 45°. This represents one-fifth the time required for a conventional angiographic image. Venous blood is successfully saturated when the saturation band is placed at a fixed distance from the current imaging section. The method is demonstrated in the imaging of the carotid bifurcation in healthy volunteers and of a patient who had undergone carotid endarterectomy.",
author = "Brown, {D. G.} and Riederer, {Stephen J} and Jack, {Clifford R Jr.} and F. Farzaneh and Ehman, {Richard Lorne}",
year = "1990",
language = "English (US)",
volume = "176",
pages = "461--466",
journal = "Radiology",
issn = "0033-8419",
publisher = "Radiological Society of North America Inc.",
number = "2",

}

TY - JOUR

T1 - MR angiography with oblique gradient-recalled echo technique

AU - Brown, D. G.

AU - Riederer, Stephen J

AU - Jack, Clifford R Jr.

AU - Farzaneh, F.

AU - Ehman, Richard Lorne

PY - 1990

Y1 - 1990

N2 - Magnetic resonance (MR) angiography with use of an oblique gradient-recalled echo sequence is discussed. The technique was developed for the efficient acquisition of angiographic data when the desired projection direction is already known. The raw data set is acquired directly at the projection angle; thus, a high-resolution projection is created, despite a decrease in the number of phase-encoding views acquired per axial image. Excessive reduction in the number of views acquired causes a loss of contrast in the projection images rather than a loss of resolution. High-resolution, high-contrast MR projection angiograms can be obtained in 2 1/2 minutes, with 50 3-mm sections and 48 phase encodings per section, a repetition time of 50 msec, an echo time of 15 msec, and a flip angle of 45°. This represents one-fifth the time required for a conventional angiographic image. Venous blood is successfully saturated when the saturation band is placed at a fixed distance from the current imaging section. The method is demonstrated in the imaging of the carotid bifurcation in healthy volunteers and of a patient who had undergone carotid endarterectomy.

AB - Magnetic resonance (MR) angiography with use of an oblique gradient-recalled echo sequence is discussed. The technique was developed for the efficient acquisition of angiographic data when the desired projection direction is already known. The raw data set is acquired directly at the projection angle; thus, a high-resolution projection is created, despite a decrease in the number of phase-encoding views acquired per axial image. Excessive reduction in the number of views acquired causes a loss of contrast in the projection images rather than a loss of resolution. High-resolution, high-contrast MR projection angiograms can be obtained in 2 1/2 minutes, with 50 3-mm sections and 48 phase encodings per section, a repetition time of 50 msec, an echo time of 15 msec, and a flip angle of 45°. This represents one-fifth the time required for a conventional angiographic image. Venous blood is successfully saturated when the saturation band is placed at a fixed distance from the current imaging section. The method is demonstrated in the imaging of the carotid bifurcation in healthy volunteers and of a patient who had undergone carotid endarterectomy.

UR - http://www.scopus.com/inward/record.url?scp=0025361825&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025361825&partnerID=8YFLogxK

M3 - Article

C2 - 2367661

AN - SCOPUS:0025361825

VL - 176

SP - 461

EP - 466

JO - Radiology

JF - Radiology

SN - 0033-8419

IS - 2

ER -