Image artifacts due to a time-varying contrast medium concentration in 3D contrast-enhanced MRA
Svensson, Jonas LU ; Petersson, J Stefan LU ; Ståhlberg, Freddy LU ; Larsson, Elna-Marie LU ; Leander, Peter LU and Olsson, Lars E LU
(1999)
In Journal of Magnetic Resonance Imaging
10(6).
p.919-928
- Abstract
- The purpose of this work was to study image effects due to time-varying contrast medium concentration in contrast-enhanced three dimensional (3D) magnetic resonance angiography (MRA) images. Two different simulation models (1D and 3D) and two different contrast medium variation schemes were used. Phantom measurements were also performed. Experiments were performed for several different bolus timings. Similar sequence and image object parameters were used in both simulations and measurements (TE/TR 2. 1/7.8 mses, flip angle 30 degrees, T1/T2 1200-80/150-40 msec, flow velocity 100 cm/sec). A small variation in bolus timing yielded large variations in the appearance of the image effects, especially if the center of k-space was sampled in the... (More)
- The purpose of this work was to study image effects due to time-varying contrast medium concentration in contrast-enhanced three dimensional (3D) magnetic resonance angiography (MRA) images. Two different simulation models (1D and 3D) and two different contrast medium variation schemes were used. Phantom measurements were also performed. Experiments were performed for several different bolus timings. Similar sequence and image object parameters were used in both simulations and measurements (TE/TR 2. 1/7.8 mses, flip angle 30 degrees, T1/T2 1200-80/150-40 msec, flow velocity 100 cm/sec). A small variation in bolus timing yielded large variations in the appearance of the image effects, especially if the center of k-space was sampled in the vicinity of rapid contrast medium concentration variation. For a typical bolus injection in a patient, a severe signal loss but only minor ringing and edge artifacts appeared if the bolus injection was poorly timed. Effects of pulsatile flow were minor. The 3D model proved to be a useful tool in these studies. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1114722
- author
- Svensson, Jonas
LU
; Petersson, J Stefan
LU
; Ståhlberg, Freddy
LU
; Larsson, Elna-Marie
LU
; Leander, Peter
LU
and Olsson, Lars E
LU
- organization
- publishing date
- 1999
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- contrast medium, angiography, magnetic resonance, artifacts, simulations
- in
- Journal of Magnetic Resonance Imaging
- volume
- 10
- issue
- 6
- pages
- 919 - 928
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- pmid:10581504
- scopus:0032722743
- ISSN
- 1522-2586
- DOI
- 10.1002/(SICI)1522-2586(199912)10:6<919::AID-JMRI3>3.0.CO;2-W
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Emergency medicine/Medicine/Surgery (013240200), Diagnostic Radiology, (Lund) (013038000), Medical Radiation Physics, Malmö (013243210), Medical Radiology Unit (013241410)
- id
- 9bb64f5c-9d84-49e5-822c-95b825e6dbcb (old id 1114722)
- alternative location
- http://www3.interscience.wiley.com/cgi-bin/fulltext/67502017/PDFSTART
- date added to LUP
- 2016-04-01 12:10:48
- date last changed
- 2022-01-26 23:58:35
@article{9bb64f5c-9d84-49e5-822c-95b825e6dbcb,
abstract = {{The purpose of this work was to study image effects due to time-varying contrast medium concentration in contrast-enhanced three dimensional (3D) magnetic resonance angiography (MRA) images. Two different simulation models (1D and 3D) and two different contrast medium variation schemes were used. Phantom measurements were also performed. Experiments were performed for several different bolus timings. Similar sequence and image object parameters were used in both simulations and measurements (TE/TR 2. 1/7.8 mses, flip angle 30 degrees, T1/T2 1200-80/150-40 msec, flow velocity 100 cm/sec). A small variation in bolus timing yielded large variations in the appearance of the image effects, especially if the center of k-space was sampled in the vicinity of rapid contrast medium concentration variation. For a typical bolus injection in a patient, a severe signal loss but only minor ringing and edge artifacts appeared if the bolus injection was poorly timed. Effects of pulsatile flow were minor. The 3D model proved to be a useful tool in these studies.}},
author = {{Svensson, Jonas and Petersson, J Stefan and Ståhlberg, Freddy and Larsson, Elna-Marie and Leander, Peter and Olsson, Lars E}},
issn = {{1522-2586}},
keywords = {{contrast medium; angiography; magnetic resonance; artifacts; simulations}},
language = {{eng}},
number = {{6}},
pages = {{919--928}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Journal of Magnetic Resonance Imaging}},
title = {{Image artifacts due to a time-varying contrast medium concentration in 3D contrast-enhanced MRA}},
url = {{http://dx.doi.org/10.1002/(SICI)1522-2586(199912)10:6<919::AID-JMRI3>3.0.CO;2-W}},
doi = {{10.1002/(SICI)1522-2586(199912)10:6<919::AID-JMRI3>3.0.CO;2-W}},
volume = {{10}},
year = {{1999}},
}