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Titolo:
Contrast enhanced MRA: do contrast agents with a higher T-1 relaxitivity improve the visualization of carotid artery stenoses?
Autore:
Friese, S; Krapf, H; Fetter, M; Vonthein, R; Skalej, M; Kuker, W;
Indirizzi:
Univ Tubingen, Radiol Klin, Abt Neuroradiol, D-72076 Tubingen, Germany Univ Tubingen Tubingen Germany D-72076 radiol, D-72076 Tubingen, Germany Univ Tubingen, Neurol Klin, D-7400 Tubingen, Germany Univ Tubingen Tubingen Germany D-7400 rol Klin, D-7400 Tubingen, Germany Univ Tubingen, Inst Med Biometrie, Tubingen, Germany Univ Tubingen Tubingen Germany n, Inst Med Biometrie, Tubingen, Germany
Titolo Testata:
ROFO-FORTSCHRITTE AUF DEM GEBIET DER RONTGENSTRAHLEN UND DER BILDGEBENDEN VERFAHREN
fascicolo: 6, volume: 173, anno: 2001,
pagine: 542 - 546
SICI:
1438-9029(200106)173:6<542:CEMDCA>2.0.ZU;2-7
Fonte:
ISI
Lingua:
GER
Soggetto:
MAGNETIC-RESONANCE ANGIOGRAPHY; PSEUDO-OCCLUSION; ULTRASOUND; CRITERIA;
Keywords:
carotid stenosis; angiography; magnetic resonance; contrast media; ultrasonography; Doppler; duplex;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Friese, S Univ Tubingen, Radiol Klin, Abt Neuroradiol, Hoppe Seyler Str 3,D-72076 Tubingen, Germany Univ Tubingen Hoppe Seyler Str 3 Tubingen Germany D-72076 rmany
Citazione:
S. Friese et al., "Contrast enhanced MRA: do contrast agents with a higher T-1 relaxitivity improve the visualization of carotid artery stenoses?", ROFO-F RONT, 173(6), 2001, pp. 542-546

Abstract

Purpose: CE-MRA is a powerful tool for the non-invasive evaluation of carotid artery occlusive disease. However, due to certain drawbacks, it has notcompletely replaced DSA. The purpose of this study was to evaluate if Gd-BOPTA, a contrast agent with high T-1 relaxivity, can increase the diagnostic accuracy of CE-MRA. Material and Methods: The CE-MRA examinations of 54 consecutive patients were evaluated by two experienced radiologists, independently. The examinations of 27 patients were contrasted either with 20 mi Gd-BOPTA or with 20 mi Gd-DTPA. The reviewers were blinded to the contrast agent chosen and to the ultrasound results. They rated the overall image quality and the degree of the ICA stenoses. Results: For the estimation of thedegree of the ICA stenoses there was a high interrater validity. In comparison to the ultrasound findings, 6 of 50 high-degree stenoses were underestimated as moderate stenoses. In one of seven sonographically occluded vessels, MRA revealed residual patency in the vessel lumen. It was not possible to identify the contrast agent that was taken for a study. Subjective estimation of the image quality (arterial contrast of the ICA, contrast of the other vessels, and general impression) did not significantly change with thecontrast agent employed. Conclusion: The diagnostic accuracy of CE-MRA forthe evaluation of internal carotid artery stenoses is not improved by Gd-BOPTA if identical volumina of contrast media are applied. The potential of this contrast agent can be the reduction of the amount of contrast without loss of diagnostic information. Further studies are necessary.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/10/20 alle ore 14:10:21