[Multiple slab MR angiography of the A. carotis interna: a preoperative comparative study].

Autor:	Vogl TJ; Strahlenklinik und Poliklinik, Universitätsklinikum Rudolf Virchow, FU Berlin., Heinzinger K, Juergens M, Kutter R, Hepp W, Balzer JO, Haupt G, Banzer D, Felix R
Jazyk:	němčina
Zdroj:	RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin [Rofo] 1995 May; Vol. 162 (5), pp. 404-11.
Abstrakt:	Purpose: With the introduction of MR angiography (MRA) into clinical routine, arteriosclerotic lesions of the supraaortic vessels may be well demonstrated. Material and Methods: The comparison between Multislab MRA (gradient echo, TOF) and X-ray angiography (XRA) as reference in 70 patients suspicious of stenotic lesions in the internal carotid artery proved the high reliability of these methods. Results: In determining the degree of stenosis, according to the NASCET study (North American Symptomatic Endarterectomy Trial), a correlation between MRA and XRA of 92.3% could be calculated. The principal problem of MRA is the overestimation of high-grade stenoses; we observed 5 false-positive results in severe stenosis. Sensitivity and specificity were 95.6 and 92.6%, respectively, for detection of severe (> 60%) stenosis. Conclusion: Despite its limitations, MRA is a clinically important noninvasive technique for preoperative evaluation of patients undergoing carotid endarterectomy.
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu