Access the full text.
Sign up today, get DeepDyve free for 14 days.
J. Alvarez-Linera, J. Benito‐León, J. Escribano, J. Campollo, R. Gesto (2003)
Prospective evaluation of carotid artery stenosis: elliptic centric contrast-enhanced MR angiography and spiral CT angiography compared with digital subtraction angiography.AJNR. American journal of neuroradiology, 24 5
P. Rothwell, S. Pendlebury, J. Wardlaw, C. Warlow (2000)
Critical appraisal of the design and reporting of studies of imaging and measurement of carotid stenosis.Stroke, 31 6
L. Saba, G. Caddeo, R. Sanfilippo, R. Montisci, G. Mallarini (2007)
Efficacy and sensitivity of axial scans and different reconstruction methods in the study of the ulcerated carotid plaque using multidetector-row CT angiography: comparison with surgical results.AJNR. American journal of neuroradiology, 28 4
C. Anderson, D. Saloner, J. Tsuruda, L. Shapeero, R. Lee (1990)
Artifacts in maximum-intensity-projection display of MR angiograms.AJR. American journal of roentgenology, 154 3
B. Muhs, P. Gagne, Jael Wagener, Jessica Baker, M. Ortega, M. Adelman, N. Cayne, C. Rockman, Thomas Maldonado (2005)
Gadolinium-Enhanced Versus Time-of-Flight Magnetic Resonance Angiography: What Is the Benefit of Contrast Enhancement in Evaluating Carotid Stenosis?Annals of Vascular Surgery, 19
P. Nederkoorn, O. Elgersma, Y. Graaf, B. Eikelboom, L. Kappelle, W. Mali (2003)
Carotid artery stenosis: accuracy of contrast-enhanced MR angiography for diagnosis.Radiology, 228 3
R. Willinsky, S. Taylor, K. terBrugge, R. Farb, G. Tomlinson, W. Montanera (2003)
Neurologic complications of cerebral angiography: prospective analysis of 2,899 procedures and review of the literature.Radiology, 227 2
J. U-King-im, M. Graves, J. Cross, N. Higgins, J. Wat, R. Trivedi, T. Tang, S. Howarth, P. Kirkpatrick, N. Antoun, J. Gillard (2007)
Internal carotid artery stenosis: accuracy of subjective visual impression for evaluation with digital subtraction angiography and contrast-enhanced MR angiography.Radiology, 244 1
A. Fox (1993)
How to measure carotid stenosis.Radiology, 186 2
J. Hájek, Z. Šidák, P. Sen (1969)
Theory of rank tests
A. Mallouhi, A. Chemelli, W. Judmaier, S. Giacomuzzi, W. Jaschke, P. Waldenberger (2002)
Investigation of cerebrovascular disease with MR angiography: comparison of volume rendering and maximum intensity projection algorithms – initial assessmentNeuroradiology, 44
J. Hájek, Z. Šidák, P. Sen (1999)
Chapter 3 – Elementary theory of rank tests
H. Barnett, D. Taylor, M. Eliasziw, A. Fox, G. Ferguson, R. Haynes, R. Rankin, G. Clagett, V. Hachinski, D. Sackett, K. Thorpe, H. Meldrum, J. Spence (1998)
Benefit of carotid endarterectomy in patients with symptomatic moderate or severe stenosis. North American Symptomatic Carotid Endarterectomy Trial Collaborators.The New England journal of medicine, 339 20
J. Marco, G. Nesbit, G. Wesbey, D. Richardson (1994)
Prospective evaluation of extracranial carotid stenosis: MR angiography with maximum-intensity projections and multiplanar reformation compared with conventional angiography.AJR. American journal of roentgenology, 163 5
(1990)
Selective cerebral intraarterial DSA: complication rate and control of risk factors
Ross Ihaka (1996)
Gentleman R: R: A language for data analysis and graphics
L. Wilkins (1991)
North American Symptomatic Carotid Endarterectomy Trial. Methods, patient characteristics, and progress.Stroke, 22 6
J. Heiserman (2003)
Flow voids and carotid MR angiography.AJNR. American journal of neuroradiology, 24 8
B. Farrell, Alec Fraser, P. Sandercock, J. Slattery, C. Warlow (1998)
Randomised trial of endarterectomy for recently symptomatic carotid stenosis: final results of the MRC European Carotid Surgery Trial (ECST)The Lancet, 351
E. Yucel (1999)
Magnetic Resonance AngiographyPerspectives in Vascular Surgery and Endovascular Therapy, 3
E. Yucel, C. Anderson, R. Edelman, T. Grist, R. Baum, W. Manning, A. Culebras, W. Pearce (1999)
AHA scientific statement. Magnetic resonance angiography : update on applications for extracranial arteries.Circulation, 100 22
P. Rothwell (2000)
Analysis of agreement between measurements of continuous variables: general principles and lessons from studies of imaging of carotid stenosisJournal of Neurology, 247
C Anderson, R. Lee, D Levin, S. Alonso, D. Saloner (1994)
Measurement of internal carotid artery stenosis from source MR angiograms.Radiology, 193 1
E. Oddone, K. Waters (1995)
Endarterectomy for asymptomatic carotid artery stenosis.JAMA, 274 19
M. Patel, K. Kuntz, R. Klufas, Ducksoo Kim, Jonathan Kramer, J. Polak, J. Skillman, A. Whittemore, R. Edelman, K. Kent (1995)
Preoperative assessment of the carotid bifurcation. Can magnetic resonance angiography and duplex ultrasonography replace contrast arteriography?Stroke, 26 10
N. Anzalone, F. Scomazzoni, R. Castellano, L. Strada, C. Righi, L. Politi, M. Kirchin, R. Chiesa, G. Scotti (2005)
Carotid artery stenosis: intraindividual correlations of 3D time-of-flight MR angiography, contrast-enhanced MR angiography, conventional DSA, and rotational angiography for detection and grading.Radiology, 236 1
S. Patel, D. Collie, J. Wardlaw, S. Lewis, A. Wright, R. Gibson, Robin Sellar (2002)
Outcome, observer reliability, and patient preferences if CTA, MRA, or Doppler ultrasound were used, individually or together, instead of digital subtraction angiography before carotid endarterectomyJournal of Neurology, Neurosurgery & Psychiatry, 73
(1995)
Endarterectomy for asymptomatic carotid artery stenosis. Executive Committee for the Asymptomatic Carotid Atherosclerosis Study.JAMA, 273 18
P. Nederkoorn, Y. Graaf, B. Eikelboom, A. Lugt, L. Bartels, W. Mali (2002)
Time-of-flight MR angiography of carotid artery stenosis: does a flow void represent severe stenosis?AJNR. American journal of neuroradiology, 23 10
E. Bartlett, T. Walters, S. Symons, A. Fox (2007)
Carotid Stenosis Index Revisited With Direct CT Angiography Measurement of Carotid Arteries to Quantify Carotid StenosisStroke, 38
S. Citron, R. Wallace, C. Lewis, R. Dawson, J. Dion, A. Fox, J. Manzione, C. Payne, F. Rivera, E. Russell, D. Sacks, W. Yakes, C. Bakal (2003)
Quality improvement guidelines for adult diagnostic neuroangiography. Cooperative study between ASITN, ASNR, and SIR.Journal of vascular and interventional radiology : JVIR, 14 9 Pt 2
Y. Korogi, Mutsumasa Takahashi, Toshio Nakagawa, N. Mabuchi, T. Watabe, Y. Shiokawa, H. Shiga, Toshihiro O’uchi, H. Miki, Y. Horikawa, Satoru Fujiwara, Masahiro Furuse (1997)
Intracranial vascular stenosis and occlusion: MR angiographic findings.AJNR. American journal of neuroradiology, 18 1
C. Fellner, W. Lang, R. Janka, R. Wutke, W. Bautz, F. Fellner (2005)
Magnetic resonance angiography of the carotid arteries using three different techniques: Accuracy compared with intraarterial x‐ray angiography and endarterectomy specimensJournal of Magnetic Resonance Imaging, 21
K. Kent, K. Kuntz, M. Patel, Ducksoo Kim, R. Klufas, A. Whittemore, J. Polak, J. Skillman, R. Edelman (1995)
Perioperative imaging strategies for carotid endarterectomy. An analysis of morbidity and cost-effectiveness in symptomatic patients.JAMA, 274 11
M. Lev, J. Romero, R. González (2003)
Flow voids in time-of-flight MR angiography of carotid artery stenosis? It depends on the TE!AJNR. American journal of neuroradiology, 24 10
R. Vanninen, H. Manninen, P. Partanen, H. Tulla, P. Vainio (1996)
How should we estimate carotid stenosis using magnetic resonance angiography?Neuroradiology, 38
M. Lell, Claudia Fellner, Ulrich Baum, Torsten Hothorn, R. Steiner, Werner Lang, Werner Bautz, Franz Fellner (2007)
Evaluation of carotid artery stenosis with multisection CT and MR imaging: influence of imaging modality and postprocessing.AJNR. American journal of neuroradiology, 28 1
E. Buskens, P. Nederkoorn, T. Woude, W. Mali, L. Kappelle, B. Eikelboom, Y. Graaf, M. Hunink (2004)
Imaging of carotid arteries in symptomatic patients: cost-effectiveness of diagnostic strategies.Radiology, 233 1
P. Rothwell, M. Eliasziw, S. Gutnikov, A. Fox, D. Taylor, M. Mayberg, C. Warlow, H. Barnett (2003)
Analysis of pooled data from the randomised controlled trials of endarterectomy for symptomatic carotid stenosisThe Lancet, 361
F. Bretz, T. Hothorn, P. Westfall (2004)
On Multiple Comparisons in R ∗
M. Lell, K. Anders, M. Uder, E. Klotz, H. Ditt, F. Vega-Higuera, T. Boskamp, W. Bautz, B. Tomandl (2006)
New techniques in CT angiography.Radiographics : a review publication of the Radiological Society of North America, Inc, 26 Suppl 1
J. Wardlaw, F. Chappell, J. Best, K. Wartolowska, E. Berry (2006)
Non-invasive imaging compared with intra-arterial angiography in the diagnosis of symptomatic carotid stenosis: a meta-analysisThe Lancet, 367
This Article Figures Only Full Text Full Text (PDF) All Versions of this Article: ajnr.A1179v1 29/9/1736 most recent Alert me when this article is cited Alert me if a correction is posted Citation Map Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by Runck, F. Articles by Lell, M.M. Search for Related Content PubMed PubMed Citation Articles by Runck, F. Articles by Lell, M.M. Hotlight (NEW!) What's Hotlight? American Journal of Neuroradiology 29:1736-1742, October 2008 © 2008 American Society of Neuroradiology HEAD & NECK MR Imaging: Influence of Imaging Technique and Postprocessing on Measurement of Internal Carotid Artery Stenosis F. Runck a ,c , R.P. Steiner b , W.A. Bautz c and M.M. Lell c a Department of Radiology and Neuroradiology, Klinikum Augsburg, Augsburg, Germany b Department of Sports and Rehabilitation Medicine, University of Ulm, Ulm, Germany c Institute of Radiology, University Erlangen-Nuremberg, Erlangen, Germany Please address correspondence to Frank Runck, MD, Klinikum Augsburg/Department of Radiology and Neuroradiology, Stenglinstr 2, 86156 Augsburg, Germany; e-mail: frank.runck@klinikum-augsburg.de BACKGROUND AND PURPOSE: MR angiography (MRA) is increasingly used as an alternative to digital subtraction angiography (DSA) to evaluate internal carotid artery (ICA) stenosis. Because MRA is not standardized in data acquisition and postprocessing, we sought to evaluate the effects of different acquisition techniques (time-of-flight MRA TOF-MRA) and contrast-enhanced MRA CE-MRA) and postprocessing methods (maximum intensity projection MIP, multiplanar reformation MPR, and volume-rendering on stenosis grading. MATERIALS AND METHODS: Fifty patients (33 men, 17 women) with symptomatic ICA stenosis were examined at 1.5T. Two imaging techniques and 3 postprocessing methods resulted in 6 image datasets per patient. Two readers independently evaluated ICA stenosis according to the North American Symptomatic Carotid Endarterectomy Trial criteria. Interobserver variability was calculated with the Pearson correlation coefficient and simultaneous confidence intervals (CI). The relationship of the values of ICA stenosis between the techniques was assessed by means of simultaneous 95% Tukey CI. RESULTS: Interobserver agreement was high. Higher concordance was found for postprocessing techniques with TOF- than with CE-MRA; the mean difference between TOF-MPR and TOF-MIP was 0.4% (95% CI, –2.9%–3.8%). Stenosis values for CE-MPR differed significantly from those of CE volume-rendering (7.2%; 95% CI, 3.9%–10.6%). CONCLUSION: Stenosis grading was found to be independent of the postprocessing technique except for comparison of CE-MPR with CE volume-rendering, with the volume-rendering technique resulting in higher stenosis values. MPR seems to be best-suited for measurement of ICA stenosis. Parameter setting is critical with volume-rendering, in which stenosis values were consistently higher compared with the other methods. This article has been cited by other articles: L.S. Babiarz, J.M. Romero, E.K. Murphy, B. Brobeck, P.W. Schaefer, R.G. Gonzalez, and M.H. Lev Contrast-Enhanced MR Angiography Is Not More Accurate Than Unenhanced 2D Time-of-Flight MR Angiography for Determining >=70% Internal Carotid Artery Stenosis AJNR Am. J. Neuroradiol., April 1, 2009; 30(4): 761 - 768. Abstract Full Text PDF Home Subscribe Author Instructions Submit Online Search the AJNR Archives Feedback Help Copyright © 2010 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X
American Journal of Neuroradiology – American Journal of Neuroradiology
Published: Oct 1, 2008
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.