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Titolo:
3D contrast-enhanced MR angiography of the run-off vessels: Value of imagesubtraction
Autore:
Ruehm, SG; Nanz, D; Baumann, A; Schmid, M; Debatin, JF;
Indirizzi:
Univ Hosp Essen, Dept Diagnost Radiol, D-45122 Essen, Germany Univ Hosp Essen Essen Germany D-45122 ost Radiol, D-45122 Essen, Germany
Titolo Testata:
JOURNAL OF MAGNETIC RESONANCE IMAGING
fascicolo: 3, volume: 13, anno: 2001,
pagine: 402 - 411
SICI:
1053-1807(200103)13:3<402:3CMAOT>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETIC-RESONANCE ANGIOGRAPHY; VASCULAR TREE STENOSES; BREATH-HOLD; LOWER-EXTREMITY; RENAL-ARTERIES; CAROTID ARTERIES; ABDOMINAL-AORTA; ARTERIOGRAPHY; AORTOGRAPHY;
Keywords:
magnetic resonance angiography; peripheral vascular disease; image subtraction; contrast media; magnetic resonance imagery;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Debatin, JF Univ Hosp Essen, Dept Diagnost Radiol, Hufelandstr 55, D-45122Essen, Germany Univ Hosp Essen Hufelandstr 55 Essen Germany D-45122 Germany
Citazione:
S.G. Ruehm et al., "3D contrast-enhanced MR angiography of the run-off vessels: Value of imagesubtraction", J MAGN R I, 13(3), 2001, pp. 402-411

Abstract

The diagnostic gain associated with image subtractions was assessed regarding contrast-enhanced 3D magnetic resonance angiography (MRA) Image sets ofthe pelvic and lower extremity arteries. The RUM strategy combined a dedicated vascular coil with a single injection, two-station protocol. Voxel-by-voxel signal intensity subtraction was performed on MRA image sets obtainedbefore and during dynamic infusion of a para-magnetic contrast agent. Nonsubtracted and subtracted MRA image sets were assessed for the presence of occlusive (four grades) disease, using DSA as the standard of reference. In addition, SNR and CNR were recorded for each vascular segment on both the non-subtracted and subtracted images. While CNR values of subtracted Images exceeded those of non-subtracted Images (P < 0.05), there was no differencein diagnostic performance. For the detection of hemodynamically significant disease, non-subtracted and subtracted MRA provided overall sensitivity and specificity of 90.2%/90.3% and 95.1%/95.6%, respectively. Concordance between non-subtracted and subtracted MRA was excellent (Kappa = 0.86). (C) 2001 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/06/20 alle ore 09:17:35