期刊
AMERICAN JOURNAL OF ROENTGENOLOGY
卷 185, 期 3, 页码 717-726出版社
AMER ROENTGEN RAY SOC
DOI: 10.2214/ajr.185.3.01850717
关键词
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OBJECTIVE. The purpose of this article is to describe the appearance and causes of inferior vena cava (IVC) filling defects, how such findings may be accurately characterized, and the clinical significance of lVC filling defects. Filling defects in the IVC observed at MDCT and MRI may be a result of flow artifacts, anatomic variants, or bland or malignant thrombus. CONCLUSION. Familiarity with anatomy and flow effects is critical for distinguishing true from false filling defects in the IVC. Delayed imaging after administration of IV contrast material and dedicated MRI sequences may be helpful for further characterization of such findings. Once a true filling defect of the lVC is established, identification of the cause, whether benign or malignant, and extent will guide clinical treatment.
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