[Submillimeter 3D coronary MR angiography with real-time navigator correction in 107 patients with suspected coronary artery disease]. / Hochauflösende 3D-MR-Koronarangiographie inEcht-Zeit-Navigatortechnik: Ergebnisse aus107 Patientenuntersuchungen.
Rofo
; 174(4): 459-66, 2002 Apr.
Article
em De
| MEDLINE
| ID: mdl-11960409
ABSTRACT
PURPOSE:
To evaluate the clinical value of high-resolution coronary MR angiography (coronary MRA) in a large group of patients with suspected coronary artery disease. METHODS ANDMATERIAL:
107 patients with suspected coronary artery disease underwent free-breathing coronary MRA (Intera, 1.5 T, Philips Medical Systems). To compensate for artefacts due to respiratory motion, a right hemidiaphragmatic navigator with real time-time slice correction was used. An ECG-gated, fat-suppressed, 3D segmented-k-space gradient echo sequence (in plane resolution 0.70 x 0.79 mm(2)) was used. Cardiac catheterization with selective coronary angiography was performed in all patients. Visualization of the coronary arteries (CA) was qualitatively assessed using a four-point grading scale.RESULTS:
Image quality of grade 1 was achieved in 24 %, grade 2 in 48 %, grade 3 in 24 % and grade in in 4 % of patients. Based on an evaluation of the coronary MRAs of all patients (n = 107) sensitivity and specificity for the detection of stenoses > 60 % in the proximal and middle main coronary arteries were 74 % and 63 %, respectively. In coronary MRAs with good quality [grade 1 and 2, n = 77/107 (72 %)] sensitivity and specificity for the detection of coronary stenoses were 88 % and 91 %, respectively.CONCLUSION:
Submillimeter 3D coronary MRA with real-time navigator correction allows high quality imaging of the proximal and middle main coronary arteries with good sensitivity and specificity for detection of stenoses > 50 % in selected patients. However, in about 28 % of patients image quality is severely impaired.
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Base de dados:
MEDLINE
Assunto principal:
Angiografia por Ressonância Magnética
/
Doença das Coronárias
Tipo de estudo:
Diagnostic_studies
Limite:
Adult
/
Aged
/
Humans
/
Middle aged
Idioma:
De
Revista:
Rofo
Ano de publicação:
2002
Tipo de documento:
Article