Comparison of susceptibility weighted imaging and TOF-angiography for the detection of thrombi in acute stroke
Background and Purpose Time-of-flight (TOF) angiography detects embolic occlusion of arteries in patients with acute ischemic stroke due to the absence of blood flow in the occluded vessel. In contrast, susceptibility weighted imaging (SWI) directly enables intravascular clot visualization due to hy...
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| Hauptverfasser: | , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
May 23, 2013
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| In: |
PLOS ONE
Year: 2013, Jahrgang: 8, Heft: 5, Pages: 1-6 |
| ISSN: | 1932-6203 |
| DOI: | 10.1371/journal.pone.0063459 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1371/journal.pone.0063459 Verlag, lizenzpflichtig, Volltext: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0063459 
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| Verfasserangaben: | Alexander Radbruch, Johanna Mucke, Ferdinand Schweser, Andreas Deistung, Peter Alexander Ringleb, Christian Herbert Ziener, Matthias Roethke, Heinz-Peter Schlemmer, Sabine Heiland, Jürgen R. Reichenbach, Martin Bendszus, Stefan Rohde |
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| 520 | |a Background and Purpose Time-of-flight (TOF) angiography detects embolic occlusion of arteries in patients with acute ischemic stroke due to the absence of blood flow in the occluded vessel. In contrast, susceptibility weighted imaging (SWI) directly enables intravascular clot visualization due to hypointense susceptibility vessel signs (SVS) in the occluded vessel. The aim of this study was to compare the diagnostic accuracy of both methods to determine vessel occlusion in patients with acute stroke. Methods 94 patients were included who presented with clinical symptoms for acute stroke and displayed a delay on the time-to-peak perfusion map in the territory of the anterior (ACA), middle (M1, M1/M2, M2/M3) or posterior (PCA) cerebral artery. The frequency of SVS on SWI and vessel occlusion or stenosis on TOF-angiography was compared using the McNemar-Test. Results 87 of 94 patients displayed a clearly definable SVS on SWI. In 72 patients the SVS was associated with occlusion or stenosis on TOF-angiography. Fifteen patients exclusively displayed SVS on SWI (14 M2/M3, 1 M1), whereas no patient revealed exclusively occlusion or stenosis on TOF-angiography. Sensitivity for detection of embolic occlusion within major vessel segments (M1, M1/M2, ACA, and PCA) did not show any significant difference between both techniques (97% for SWI versus 96% for TOF-angiography) while the sensitivity for detection of embolic occlusion within M2/M3 was significantly different (84% for SWI versus 39% for TOF-angiography, p<0.00012). Conclusions SWI and TOF-angiography provide similar sensitivity for central thrombi while SWI is superior for the detection of peripheral thrombi in small arterial vessel segments. | ||
| 650 | 4 | |a Angiography | |
| 650 | 4 | |a Calcium imaging | |
| 650 | 4 | |a Hemorrhagic stroke | |
| 650 | 4 | |a Imaging techniques | |
| 650 | 4 | |a Ischemic stroke | |
| 650 | 4 | |a Magnetic resonance imaging | |
| 650 | 4 | |a Stenosis | |
| 650 | 4 | |a Stroke | |
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