Lesser John R, Flygenring Bjorn J, Knickelbine Tom, Longe Terrence, Schwartz Robert S
Minneapolis Heart Institute Foundation, 920 E. 28th Street, Suite 300, Minneapolis, MN 55407, USA.
J Cardiovasc Comput Tomogr. 2009 Jan-Feb;3(1):4-15. doi: 10.1016/j.jcct.2008.11.006. Epub 2008 Dec 16.
Coronary CT angiography is a novel noninvasive imaging technology that provides a unique view of cardiac and coronary artery pathologies. Despite proper preparation, artifacts and noisy scans can occur and are usually caused by cardiac or respiratory motion or both and obesity. This article formulates a practical approach for salvaging difficult or potentially uninterpretable studies by diagnosing the causes of artifacts and providing an approach for scan improvement with the reconstruction of new data sets. Multiple pictorial examples of scan editing are provided. In addition, tables link the likelihood that a specific cause of an artifact will allow a scan to be salvaged. An approach for interpreting scans with excess noise is also discussed.
冠状动脉CT血管造影是一种新型无创成像技术，能提供心脏和冠状动脉病变的独特视角。尽管进行了适当准备，但仍可能出现伪影和扫描噪声，通常由心脏或呼吸运动或两者共同作用以及肥胖引起。本文制定了一种实用方法，通过诊断伪影原因并提供利用新数据集重建来改进扫描的方法，挽救困难或可能无法解读的研究。提供了多个扫描编辑的图片示例。此外，表格列出了特定伪影原因使扫描得以挽救的可能性。还讨论了对噪声过大的扫描进行解读的方法。
