Time-resolved Three-dimensional Magnetic Resonance Velocity Mapping of Chronic Thoracic Aortic Dissection : A Preliminary Investigation
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概要
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Purpose: The blood flow patterns of chronic thoracic aortic dissection are complicated, and their clinical significance remains unknown. We evaluated the technical and clinical potentials of time-resolved 3-dimensional (3D) magnetic resonance (MR) velocity mapping for assessing these patterns. Methods: We used data collected from time-resolved 3D phase-contrast MR imaging of 16 patients with chronic thoracic aortic dissection to generate time-resolved 3D MR velocity mapping that included 3D streamline and path line. We investigated blood flow patterns of this disease in the mapping and compared them with the morphological changes of the patent false lumen. Results: Time-resolved 3D MR velocity mapping visualized rapid flow at the entry and in the true lumen immediately distal to the entry. We observed slower helical or laminar flow in the patent false lumen. In patients with disease progression, slower helical flow following rapid entry jet collided with the outer wall of the false lumen and was also observed in a growing ulcer-like projection. Conclusion: We showed the potential of time-resolved 3D MR velocity mapping for visualizing pathologic flow patterns related to chronic thoracic aortic dissection.
- 2011-06-01
著者
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SUZUKI Yuriko
Philips Medical Systems
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Tanaka Keiji
Coronar, Care Unit, Nippon Medical School
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Kumita Shin-ichiro
Department Of Clinical Radiology Nippon Medical School Graduate School Of Medicine
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Kumita S
Department Of Radiology Nippon Medical School
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Kumita Shinichiro
Department Of Radiology
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Takagi Ryo
Department Of Radiology Nippon Medical School
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Amano Yasuo
Department Of Radiology Nippon Medical School
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Setsuta Koichi
Department Of Radiology Nippon Medical School
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Takagi Ryo
Department Of Electrical Engineering Kogakuin University
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Tanaka Keiji
Coronary Care Unit Nippon Medical School
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Sekine Tetsuro
Department Of Radiology Nippon Medical School
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Suzuki Yuriko
Philips Electronics Japan
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