TY - JOUR
T1 - Coronary MR Angiography
T2 - Comparison of Quantitative and Qualitative Data from Four Techniques
AU - Maintz, David
AU - Aepfelbacher, Franz C.
AU - Kissinger, Kraig V.
AU - Botnar, René M.
AU - Danias, Peter G.
AU - Heindel, Walter
AU - Manning, Warren J.
AU - Stuber, Matthias
PY - 2004/2
Y1 - 2004/2
N2 - OBJECTIVE. The optimal coronary MR angiography sequence has yet to be determined. We sought to quantitatively and qualitatively compare four coronary MR angiography sequences. SUBJECTS AND METHODS. Free-breathing coronary MR angiography was performed in 12 patients using four imaging sequences (turbo field-echo, fast spin-echo, balanced fast field-echo, and spiral turbo field-echo). Quantitative comparisons, including signal-to-noise ratio, contrast-to-noise ratio, vessel diameter, and vessel sharpness, were performed using a semiautomated analysis tool. Accuracy for detection of hemodynamically significant disease (> 50%) was assessed in comparison with radiographic coronary angiography. RESULTS. Signal-to-noise and contrast-to-noise ratios were markedly increased using the spiral (25.7 ± 5.7 and 15.2 ± 3.9) and balanced fast field-echo (23.5 ± 11.7 and 14.4 ± 8.1) ± 8. 1) sequences compared with the turbo field-echo (12.5 ± 2.7 and 8.3 ± 2.6) sequence (p < 0.05). Vessel diameter was smaller with the spiral sequence (2.6 ± 0.5 mm) than with the other techniques (turbo field-echo, 3.0 ± 0.5 mm, p = 0.6; balanced fast field-echo, 3.1 ± 0.5 mm, p < 0.01; fast spin-echo, 3.1 ± 0.5 mm, p < 0.01). Vessel sharpness was highest with the balanced fast field-echo sequence (61.6% ± 8.5% compared with turbo field-echo, 44.0% ± 6.6%; spiral, 44. 7% ± 6.5%; fast spin-echo, 18.4% ± 6.7%; p < 0.001). The overall accuracies of the sequences were similar (range, 74% for turbo field-echo, 79% for spiral). Scanning time for the fast spin-echo sequences was longest (10.5 ± 0.6 min), and for the spiral acquisitions was shortest (5.2 ± 0.3 min). CONCLUSION. Advantages in signal-to-noise and contrast-to-noise ratios, vessel sharpness, and the qualitative results appear to favor spiral and balanced fast field-echo coronary MR angiography sequences, although subjective accuracy for the detection of coronary artery disease was similar to that of other sequences.
AB - OBJECTIVE. The optimal coronary MR angiography sequence has yet to be determined. We sought to quantitatively and qualitatively compare four coronary MR angiography sequences. SUBJECTS AND METHODS. Free-breathing coronary MR angiography was performed in 12 patients using four imaging sequences (turbo field-echo, fast spin-echo, balanced fast field-echo, and spiral turbo field-echo). Quantitative comparisons, including signal-to-noise ratio, contrast-to-noise ratio, vessel diameter, and vessel sharpness, were performed using a semiautomated analysis tool. Accuracy for detection of hemodynamically significant disease (> 50%) was assessed in comparison with radiographic coronary angiography. RESULTS. Signal-to-noise and contrast-to-noise ratios were markedly increased using the spiral (25.7 ± 5.7 and 15.2 ± 3.9) and balanced fast field-echo (23.5 ± 11.7 and 14.4 ± 8.1) ± 8. 1) sequences compared with the turbo field-echo (12.5 ± 2.7 and 8.3 ± 2.6) sequence (p < 0.05). Vessel diameter was smaller with the spiral sequence (2.6 ± 0.5 mm) than with the other techniques (turbo field-echo, 3.0 ± 0.5 mm, p = 0.6; balanced fast field-echo, 3.1 ± 0.5 mm, p < 0.01; fast spin-echo, 3.1 ± 0.5 mm, p < 0.01). Vessel sharpness was highest with the balanced fast field-echo sequence (61.6% ± 8.5% compared with turbo field-echo, 44.0% ± 6.6%; spiral, 44. 7% ± 6.5%; fast spin-echo, 18.4% ± 6.7%; p < 0.001). The overall accuracies of the sequences were similar (range, 74% for turbo field-echo, 79% for spiral). Scanning time for the fast spin-echo sequences was longest (10.5 ± 0.6 min), and for the spiral acquisitions was shortest (5.2 ± 0.3 min). CONCLUSION. Advantages in signal-to-noise and contrast-to-noise ratios, vessel sharpness, and the qualitative results appear to favor spiral and balanced fast field-echo coronary MR angiography sequences, although subjective accuracy for the detection of coronary artery disease was similar to that of other sequences.
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U2 - 10.2214/ajr.182.2.1820515
DO - 10.2214/ajr.182.2.1820515
M3 - Article
C2 - 14736693
AN - SCOPUS:1642528008
SN - 0361-803X
VL - 182
SP - 515
EP - 521
JO - American Journal of Roentgenology
JF - American Journal of Roentgenology
IS - 2
ER -