High-resolution 3D unenhanced ECG-gated respiratory-navigated MR angiography of the renal arteries: comparison with contrast-enhanced MR angiography
OBJECTIVE. The aim of this study is to determine the diagnostic value of high-resolution 3D unenhanced ECG-gated respiratory-navigated MR angiography (MRA) of the renal arteries using a steady-state free precession (SSFP) technique in comparison with 1.0-molar contrast-enhanced MRA in patients with...
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| Hauptverfasser: | , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2010
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| In: |
American journal of roentgenology
Year: 2010, Jahrgang: 195, Heft: 6, Pages: 1423-1428 |
| ISSN: | 1546-3141 |
| DOI: | 10.2214/AJR.10.4365 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.2214/AJR.10.4365 Verlag, lizenzpflichtig, Volltext: https://www.ajronline.org/doi/10.2214/AJR.10.4365 
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| Verfasserangaben: | Oliver K. Mohrs, Steffen E. Petersen, Thomas Schulze, Michael Zieschang, Harald Küx, Peter Schmitt, Sabine Bergemann and Hans-Ulrich Kauczor |
MARC
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| 245 | 1 | 0 | |a High-resolution 3D unenhanced ECG-gated respiratory-navigated MR angiography of the renal arteries |b comparison with contrast-enhanced MR angiography |c Oliver K. Mohrs, Steffen E. Petersen, Thomas Schulze, Michael Zieschang, Harald Küx, Peter Schmitt, Sabine Bergemann and Hans-Ulrich Kauczor |
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| 520 | |a OBJECTIVE. The aim of this study is to determine the diagnostic value of high-resolution 3D unenhanced ECG-gated respiratory-navigated MR angiography (MRA) of the renal arteries using a steady-state free precession (SSFP) technique in comparison with 1.0-molar contrast-enhanced MRA in patients with suspected renal artery stenosis. - - SUBJECTS AND METHODS. Forty-five consecutive patients underwent unenhanced MRA before contrast-enhanced MRA within the same session. We assessed examination time, image quality, renal artery architecture, and localization and severity of renal artery stenosis. - - RESULTS. Examination time was shorter for contrast-enhanced MRA (mean ± SD, 12 ± 3 minutes) than for unenhanced MRA (19 ± 3 minutes; p < 0.001). On a 5-point scale, the image quality was similar for contrast-enhanced MRA (3.8 ± 1.0) and unenhanced MRA (4.0 ± 1.3; p = 0.24). Contrast-enhanced MRA offered more assessable data sets than did unenhanced MRA (95% vs 90%); however, unenhanced MRA had more data sets with maximum image quality (49% vs 30%). There was moderate agreement in stenosis grading between both MRA techniques (κ = 0.51; p < 0.001), but in only one case (1.3%) we found mismatch of more than one severity stenosis grade (stenoses > 75%). Sensitivity, specificity, and positive and negative predictive values of unenhanced MRA to detect renal artery stenoses greater than 50% were 75%, 99%, 75%, and 99%, respectively. - - CONCLUSION. We show that SSFP 3D unenhanced MRA is a very promising technique for patients with suspected renovascular disease and could be used as an alternative if gadolinium-based contrast agents cannot be administered. | ||
| 650 | 4 | |a contrast agent | |
| 650 | 4 | |a MR angiography | |
| 650 | 4 | |a peripheral artery disease | |
| 650 | 4 | |a renal artery | |
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| 700 | 1 | |a Petersen, Steffen E. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Schulze, Thomas |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zieschang, Michael |e VerfasserIn |4 aut | |
| 700 | 1 | |a Küx, Harald |e VerfasserIn |4 aut | |
| 700 | 1 | |a Schmitt, Peter |e VerfasserIn |4 aut | |
| 700 | 1 | |a Bergemann, Sabine |e VerfasserIn |4 aut | |
| 700 | 1 | |a Kauczor, Hans-Ulrich |d 1962- |e VerfasserIn |0 (DE-588)139267123 |0 (DE-627)70327113X |0 (DE-576)310955327 |4 aut | |
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