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Titolo:
Three-dimensional MR coronary angiography using the navigator technique compared with conventional coronary angiography
Autore:
Sandstede, JJW; Pabst, T; Beer, M; Geis, N; Kenn, W; Neubauer, S; Hahn, D;
Indirizzi:
Univ Wurzburg, Inst Rontgendiagnost, D-97080 Wurzburg, Germany Univ Wurzburg Wurzburg Germany D-97080 agnost, D-97080 Wurzburg, Germany Univ Wurzburg, Med Klin, D-8700 Wurzburg, Germany Univ Wurzburg WurzburgGermany D-8700 Med Klin, D-8700 Wurzburg, Germany
Titolo Testata:
AMERICAN JOURNAL OF ROENTGENOLOGY
fascicolo: 1, volume: 172, anno: 1999,
pagine: 135 - 139
SICI:
0361-803X(199901)172:1<135:TMCAUT>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
BREATH-HOLD; ARTERY STENOSIS; FAT-SATURATION; ECHO;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Sandstede, JJW Univg,urzburg, Inst Rontgendiagnost, Josef Schneider Str 2,D-97080 Wurzbur Univ Wurzburg Josef Schneider Str 2 Wurzburg Germany D-97080
Citazione:
J.J.W. Sandstede et al., "Three-dimensional MR coronary angiography using the navigator technique compared with conventional coronary angiography", AM J ROENTG, 172(1), 1999, pp. 135-139

Abstract

OBJECTIVE. We evaluated the diagnostic accuracy of three-dimensional (3D) MR coronary angiography with the navigator technique for the detection of coronary artery stenoses in comparison with that of conventional radiographic angiography. SUBJECTS AND METHODS. Thirty patients with coronary artery disease were examined with an EGG-triggered 3D fast low-angle shot sequence using retrospective respiratory gating and the navigator technique on a 1.5-T MR scanner. The data set was evaluated as a 3D view with a surface rendering technique. RESULTS. Imaging of the proximal coronary arteries was possible in all patients. The average visualized lengths of the left main, left anterior descending, left circumflex, and right coronary arteries were 1.9 +/- 0.5 cm (mean +/- SD), 5.2 +/- 2.3 cm, 4.2 +/- 1.9 cm, and 5.2 +/- 2.5 cm, respectively. Irregular breathing reduced image quality in seven of the 30 patients, making diagnosis of stenoses impossible. In the 77% of patients whose examinations resulted in high-quality images, the sensitivity and specificity fordetection of significant stenoses and occlusions in all four main coronaryarteries were 81% and 89%, respectively. CONCLUSION. The navigator technique allows reproducible imaging of the proximal course of coronary arteries. This technique obviates breath-hold studies, thus allowing more patients to be examined. In patients whose examinations resulted in high-quality images, significant coronary artery lesions could be seen. However, for widespread clinical use, further technical improvement is necessary to increase sensitivity and specificity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 06:23:14