Abstract #2815

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

Yasuyoshi Kuroiwa^1,2, 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. T₁SI positively correlated with the erythrocyte content in the thrombus. MRI could discriminate organizing from non-organizing area in DVT.

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