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Abstract #2815

Magnetic resonance imaging discriminates organizing from non-organizing area in deep vein thrombus.

Yasuyoshi Kuroiwa1,2, Atsushi Yamashita2, Eriko Nakamura2, Tosiaki Miyati3, Auxeisu Fukumi2, Masaji Maeda1, Yasushi Kihara4, Takuroh Imamura5, and Yujiro Asada2

1Department of Radiological Technology, Koga General Hospital, Miyazaki, Japan, 2Department of Pathology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan, 3Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 4Department of Radiology, Koga General Hospital, Miyazaki, Japan, 5Department of Internal Medicine, Koga General Hospital, Miyazaki, Japan

Deep vein thrombus (DVT) is gradually replaced by fibrous tissue, and is called as organizing reaction. We examined magnetic resonance image (MRI) findings of the organizing DVT in vitro using a 1.5T MR system in autopsy cases with DVT. The organizing area of DVT showed low signal intensity (SI) on T1 weighted images, in contrast to high SI on T1 weighted images in non-organizing area. Both areas showed iso to low SI on T2 weighted image. T1 SI positively correlated with the erythrocyte content in the thrombus. MRI could discriminate organizing from non-organizing area in DVT.

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