4D Flow MR Imaging of the Left Atrium: What is Non-physiological Blood Flow in the Cardiac System?
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- Sekine Tetsuro
- Department of Radiology, Nippon Medical School, Musashi Kosugi Hospital
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- Nakaza Masatoki
- Department of Radiology, Nippon Medical School
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- Matsumoto Mitsuo
- Department of Thoracic Surgery, Nippon Medical School, Musashi Kosugi Hospital
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- Ando Takahiro
- Department of Radiology, Nippon Medical School, Nagayama Hospital
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- Inoue Tatsuya
- Department of Thoracic Surgery, Nippon Medical School
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- Sakamoto Shun-Ichiro
- Department of Cardiovascular Surgery, Nippon Medical School, Musashi Kosugi Hospital
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- Maruyama Mitsunori
- Department of Cardiology, Nippon Medical School, Musashi Kosugi Hospital
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- Obara Makoto
- Philips Japan, Ltd.
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- Leonowicz Olgierd
- PMOD Technologies Llc.
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- Usuda Jitsuo
- Department of Thoracic Surgery, Nippon Medical School
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- Kumita Shinichiro
- Department of Radiology, Nippon Medical School
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抄録
<p>Most cardiac diseases cause a non-physiological blood flow pattern known as turbulence around the heart and great vessels, which further worsen the disease itself. However, there is no consensus on how blood flow can be defined in disease conditions. Especially, in the left atrium, the fact that vortex flow already exists makes this debate more complicated. 3D time-resolved phase-contrast (4D flow) MRI is expected to be able to capture blood flow patterns from multiple aspects, such as blood flow velocity, stasis, and vortex quantification. Previous studies have confirmed that physiological vortex flow is predominantly induced by the higher-volume flow from the superior left pulmonary vein. In atrial fibrillation, 4D flow MRI reveals a non-physiological blood flow pattern, which information may add value to well-established clinical risk factors. Currently, the research target of LA analysis has also widened to lung surgeons, pulmonary vein stump thrombosis after left upper lobectomy. 4D flow MRI is expected to be utilized for many more variable diseases that are currently unimaginable.</p>
収録刊行物
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- Magnetic Resonance in Medical Sciences
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Magnetic Resonance in Medical Sciences 21 (2), 293-308, 2022
日本磁気共鳴医学会
